diff options
Diffstat (limited to 'fs/xfs')
57 files changed, 2717 insertions, 2572 deletions
diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c index 94d3cdf..d1db8c1 100644 --- a/fs/xfs/linux-2.6/xfs_aops.c +++ b/fs/xfs/linux-2.6/xfs_aops.c @@ -40,11 +40,10 @@ #include "xfs_rw.h" #include "xfs_iomap.h" #include <linux/mpage.h> +#include <linux/pagevec.h> #include <linux/writeback.h> STATIC void xfs_count_page_state(struct page *, int *, int *, int *); -STATIC void xfs_convert_page(struct inode *, struct page *, xfs_iomap_t *, - struct writeback_control *wbc, void *, int, int); #if defined(XFS_RW_TRACE) void @@ -55,17 +54,15 @@ xfs_page_trace( int mask) { xfs_inode_t *ip; - bhv_desc_t *bdp; vnode_t *vp = LINVFS_GET_VP(inode); loff_t isize = i_size_read(inode); - loff_t offset = (loff_t)page->index << PAGE_CACHE_SHIFT; + loff_t offset = page_offset(page); int delalloc = -1, unmapped = -1, unwritten = -1; if (page_has_buffers(page)) xfs_count_page_state(page, &delalloc, &unmapped, &unwritten); - bdp = vn_bhv_lookup(VN_BHV_HEAD(vp), &xfs_vnodeops); - ip = XFS_BHVTOI(bdp); + ip = xfs_vtoi(vp); if (!ip->i_rwtrace) return; @@ -103,15 +100,56 @@ xfs_finish_ioend( queue_work(xfsdatad_workqueue, &ioend->io_work); } +/* + * We're now finished for good with this ioend structure. + * Update the page state via the associated buffer_heads, + * release holds on the inode and bio, and finally free + * up memory. Do not use the ioend after this. + */ STATIC void xfs_destroy_ioend( xfs_ioend_t *ioend) { + struct buffer_head *bh, *next; + + for (bh = ioend->io_buffer_head; bh; bh = next) { + next = bh->b_private; + bh->b_end_io(bh, ioend->io_uptodate); + } + vn_iowake(ioend->io_vnode); mempool_free(ioend, xfs_ioend_pool); } /* + * Buffered IO write completion for delayed allocate extents. + * TODO: Update ondisk isize now that we know the file data + * has been flushed (i.e. the notorious "NULL file" problem). + */ +STATIC void +xfs_end_bio_delalloc( + void *data) +{ + xfs_ioend_t *ioend = data; + + xfs_destroy_ioend(ioend); +} + +/* + * Buffered IO write completion for regular, written extents. + */ +STATIC void +xfs_end_bio_written( + void *data) +{ + xfs_ioend_t *ioend = data; + + xfs_destroy_ioend(ioend); +} + +/* + * IO write completion for unwritten extents. + * * Issue transactions to convert a buffer range from unwritten * to written extents. */ @@ -123,21 +161,10 @@ xfs_end_bio_unwritten( vnode_t *vp = ioend->io_vnode; xfs_off_t offset = ioend->io_offset; size_t size = ioend->io_size; - struct buffer_head *bh, *next; int error; if (ioend->io_uptodate) VOP_BMAP(vp, offset, size, BMAPI_UNWRITTEN, NULL, NULL, error); - - /* ioend->io_buffer_head is only non-NULL for buffered I/O */ - for (bh = ioend->io_buffer_head; bh; bh = next) { - next = bh->b_private; - - bh->b_end_io = NULL; - clear_buffer_unwritten(bh); - end_buffer_async_write(bh, ioend->io_uptodate); - } - xfs_destroy_ioend(ioend); } @@ -149,7 +176,8 @@ xfs_end_bio_unwritten( */ STATIC xfs_ioend_t * xfs_alloc_ioend( - struct inode *inode) + struct inode *inode, + unsigned int type) { xfs_ioend_t *ioend; @@ -162,45 +190,25 @@ xfs_alloc_ioend( */ atomic_set(&ioend->io_remaining, 1); ioend->io_uptodate = 1; /* cleared if any I/O fails */ + ioend->io_list = NULL; + ioend->io_type = type; ioend->io_vnode = LINVFS_GET_VP(inode); ioend->io_buffer_head = NULL; + ioend->io_buffer_tail = NULL; atomic_inc(&ioend->io_vnode->v_iocount); ioend->io_offset = 0; ioend->io_size = 0; - INIT_WORK(&ioend->io_work, xfs_end_bio_unwritten, ioend); + if (type == IOMAP_UNWRITTEN) + INIT_WORK(&ioend->io_work, xfs_end_bio_unwritten, ioend); + else if (type == IOMAP_DELAY) + INIT_WORK(&ioend->io_work, xfs_end_bio_delalloc, ioend); + else + INIT_WORK(&ioend->io_work, xfs_end_bio_written, ioend); return ioend; } -void -linvfs_unwritten_done( - struct buffer_head *bh, - int uptodate) -{ - xfs_ioend_t *ioend = bh->b_private; - static spinlock_t unwritten_done_lock = SPIN_LOCK_UNLOCKED; - unsigned long flags; - - ASSERT(buffer_unwritten(bh)); - bh->b_end_io = NULL; - - if (!uptodate) - ioend->io_uptodate = 0; - - /* - * Deep magic here. We reuse b_private in the buffer_heads to build - * a chain for completing the I/O from user context after we've issued - * a transaction to convert the unwritten extent. - */ - spin_lock_irqsave(&unwritten_done_lock, flags); - bh->b_private = ioend->io_buffer_head; - ioend->io_buffer_head = bh; - spin_unlock_irqrestore(&unwritten_done_lock, flags); - - xfs_finish_ioend(ioend); -} - STATIC int xfs_map_blocks( struct inode *inode, @@ -218,138 +226,260 @@ xfs_map_blocks( return -error; } +STATIC inline int +xfs_iomap_valid( + xfs_iomap_t *iomapp, + loff_t offset) +{ + return offset >= iomapp->iomap_offset && + offset < iomapp->iomap_offset + iomapp->iomap_bsize; +} + /* - * Finds the corresponding mapping in block @map array of the - * given @offset within a @page. + * BIO completion handler for buffered IO. */ -STATIC xfs_iomap_t * -xfs_offset_to_map( +STATIC int +xfs_end_bio( + struct bio *bio, + unsigned int bytes_done, + int error) +{ + xfs_ioend_t *ioend = bio->bi_private; + + if (bio->bi_size) + return 1; + + ASSERT(ioend); + ASSERT(atomic_read(&bio->bi_cnt) >= 1); + + /* Toss bio and pass work off to an xfsdatad thread */ + if (!test_bit(BIO_UPTODATE, &bio->bi_flags)) + ioend->io_uptodate = 0; + bio->bi_private = NULL; + bio->bi_end_io = NULL; + + bio_put(bio); + xfs_finish_ioend(ioend); + return 0; +} + +STATIC void +xfs_submit_ioend_bio( + xfs_ioend_t *ioend, + struct bio *bio) +{ + atomic_inc(&ioend->io_remaining); + + bio->bi_private = ioend; + bio->bi_end_io = xfs_end_bio; + + submit_bio(WRITE, bio); + ASSERT(!bio_flagged(bio, BIO_EOPNOTSUPP)); + bio_put(bio); +} + +STATIC struct bio * +xfs_alloc_ioend_bio( + struct buffer_head *bh) +{ + struct bio *bio; + int nvecs = bio_get_nr_vecs(bh->b_bdev); + + do { + bio = bio_alloc(GFP_NOIO, nvecs); + nvecs >>= 1; + } while (!bio); + + ASSERT(bio->bi_private == NULL); + bio->bi_sector = bh->b_blocknr * (bh->b_size >> 9); + bio->bi_bdev = bh->b_bdev; + bio_get(bio); + return bio; +} + +STATIC void +xfs_start_buffer_writeback( + struct buffer_head *bh) +{ + ASSERT(buffer_mapped(bh)); + ASSERT(buffer_locked(bh)); + ASSERT(!buffer_delay(bh)); + ASSERT(!buffer_unwritten(bh)); + + mark_buffer_async_write(bh); + set_buffer_uptodate(bh); + clear_buffer_dirty(bh); +} + +STATIC void +xfs_start_page_writeback( struct page *page, - xfs_iomap_t *iomapp, - unsigned long offset) + struct writeback_control *wbc, + int clear_dirty, + int buffers) +{ + ASSERT(PageLocked(page)); + ASSERT(!PageWriteback(page)); + set_page_writeback(page); + if (clear_dirty) + clear_page_dirty(page); + unlock_page(page); + if (!buffers) { + end_page_writeback(page); + wbc->pages_skipped++; /* We didn't write this page */ + } +} + +static inline int bio_add_buffer(struct bio *bio, struct buffer_head *bh) +{ + return bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh)); +} + +/* + * Submit all of the bios for all of the ioends we have saved up, + * covering the initial writepage page and also any probed pages. + */ +STATIC void +xfs_submit_ioend( + xfs_ioend_t *ioend) +{ + xfs_ioend_t *next; + struct buffer_head *bh; + struct bio *bio; + sector_t lastblock = 0; + + do { + next = ioend->io_list; + bio = NULL; + + for (bh = ioend->io_buffer_head; bh; bh = bh->b_private) { + xfs_start_buffer_writeback(bh); + + if (!bio) { + retry: + bio = xfs_alloc_ioend_bio(bh); + } else if (bh->b_blocknr != lastblock + 1) { + xfs_submit_ioend_bio(ioend, bio); + goto retry; + } + + if (bio_add_buffer(bio, bh) != bh->b_size) { + xfs_submit_ioend_bio(ioend, bio); + goto retry; + } + + lastblock = bh->b_blocknr; + } + if (bio) + xfs_submit_ioend_bio(ioend, bio); + xfs_finish_ioend(ioend); + } while ((ioend = next) != NULL); +} + +/* + * Cancel submission of all buffer_heads so far in this endio. + * Toss the endio too. Only ever called for the initial page + * in a writepage request, so only ever one page. + */ +STATIC void +xfs_cancel_ioend( + xfs_ioend_t *ioend) +{ + xfs_ioend_t *next; + struct buffer_head *bh, *next_bh; + + do { + next = ioend->io_list; + bh = ioend->io_buffer_head; + do { + next_bh = bh->b_private; + clear_buffer_async_write(bh); + unlock_buffer(bh); + } while ((bh = next_bh) != NULL); + + vn_iowake(ioend->io_vnode); + mempool_free(ioend, xfs_ioend_pool); + } while ((ioend = next) != NULL); +} + +/* + * Test to see if we've been building up a completion structure for + * earlier buffers -- if so, we try to append to this ioend if we + * can, otherwise we finish off any current ioend and start another. + * Return true if we've finished the given ioend. + */ +STATIC void +xfs_add_to_ioend( + struct inode *inode, + struct buffer_head *bh, + xfs_off_t offset, + unsigned int type, + xfs_ioend_t **result, + int need_ioend) { - loff_t full_offset; /* offset from start of file */ + xfs_ioend_t *ioend = *result; - ASSERT(offset < PAGE_CACHE_SIZE); + if (!ioend || need_ioend || type != ioend->io_type) { + xfs_ioend_t *previous = *result; - full_offset = page->index; /* NB: using 64bit number */ - full_offset <<= PAGE_CACHE_SHIFT; /* offset from file start */ - full_offset += offset; /* offset from page start */ + ioend = xfs_alloc_ioend(inode, type); + ioend->io_offset = offset; + ioend->io_buffer_head = bh; + ioend->io_buffer_tail = bh; + if (previous) + previous->io_list = ioend; + *result = ioend; + } else { + ioend->io_buffer_tail->b_private = bh; + ioend->io_buffer_tail = bh; + } - if (full_offset < iomapp->iomap_offset) - return NULL; - if (iomapp->iomap_offset + (iomapp->iomap_bsize -1) >= full_offset) - return iomapp; - return NULL; + bh->b_private = NULL; + ioend->io_size += bh->b_size; } STATIC void xfs_map_at_offset( - struct page *page, struct buffer_head *bh, - unsigned long offset, + loff_t offset, int block_bits, xfs_iomap_t *iomapp) { xfs_daddr_t bn; - loff_t delta; int sector_shift; ASSERT(!(iomapp->iomap_flags & IOMAP_HOLE)); ASSERT(!(iomapp->iomap_flags & IOMAP_DELAY)); ASSERT(iomapp->iomap_bn != IOMAP_DADDR_NULL); - delta = page->index; - delta <<= PAGE_CACHE_SHIFT; - delta += offset; - delta -= iomapp->iomap_offset; - delta >>= block_bits; - sector_shift = block_bits - BBSHIFT; - bn = iomapp->iomap_bn >> sector_shift; - bn += delta; - BUG_ON(!bn && !(iomapp->iomap_flags & IOMAP_REALTIME)); + bn = (iomapp->iomap_bn >> sector_shift) + + ((offset - iomapp->iomap_offset) >> block_bits); + + ASSERT(bn || (iomapp->iomap_flags & IOMAP_REALTIME)); ASSERT((bn << sector_shift) >= iomapp->iomap_bn); lock_buffer(bh); bh->b_blocknr = bn; - bh->b_bdev = iomapp->iomap_target->pbr_bdev; + bh->b_bdev = iomapp->iomap_target->bt_bdev; set_buffer_mapped(bh); clear_buffer_delay(bh); + clear_buffer_unwritten(bh); } /* - * Look for a page at index which is unlocked and contains our - * unwritten extent flagged buffers at its head. Returns page - * locked and with an extra reference count, and length of the - * unwritten extent component on this page that we can write, - * in units of filesystem blocks. - */ -STATIC struct page * -xfs_probe_unwritten_page( - struct address_space *mapping, - pgoff_t index, - xfs_iomap_t *iomapp, - xfs_ioend_t *ioend, - unsigned long max_offset, - unsigned long *fsbs, - unsigned int bbits) -{ - struct page *page; - - page = find_trylock_page(mapping, index); - if (!page) - return NULL; - if (PageWriteback(page)) - goto out; - - if (page->mapping && page_has_buffers(page)) { - struct buffer_head *bh, *head; - unsigned long p_offset = 0; - - *fsbs = 0; - bh = head = page_buffers(page); - do { - if (!buffer_unwritten(bh) || !buffer_uptodate(bh)) - break; - if (!xfs_offset_to_map(page, iomapp, p_offset)) - break; - if (p_offset >= max_offset) - break; - xfs_map_at_offset(page, bh, p_offset, bbits, iomapp); - set_buffer_unwritten_io(bh); - bh->b_private = ioend; - p_offset += bh->b_size; - (*fsbs)++; - } while ((bh = bh->b_this_page) != head); - - if (p_offset) - return page; - } - -out: - unlock_page(page); - return NULL; -} - -/* - * Look for a page at index which is unlocked and not mapped - * yet - clustering for mmap write case. + * Look for a page at index that is suitable for clustering. */ STATIC unsigned int -xfs_probe_unmapped_page( - struct address_space *mapping, - pgoff_t index, - unsigned int pg_offset) +xfs_probe_page( + struct page *page, + unsigned int pg_offset, + int mapped) { - struct page *page; int ret = 0; - page = find_trylock_page(mapping, index); - if (!page) - return 0; if (PageWriteback(page)) - goto out; + return 0; if (page->mapping && PageDirty(page)) { if (page_has_buffers(page)) { @@ -357,79 +487,101 @@ xfs_probe_unmapped_page( bh = head = page_buffers(page); do { - if (buffer_mapped(bh) || !buffer_uptodate(bh)) + if (!buffer_uptodate(bh)) + break; + if (mapped != buffer_mapped(bh)) break; ret += bh->b_size; if (ret >= pg_offset) break; } while ((bh = bh->b_this_page) != head); } else - ret = PAGE_CACHE_SIZE; + ret = mapped ? 0 : PAGE_CACHE_SIZE; } -out: - unlock_page(page); return ret; } -STATIC unsigned int -xfs_probe_unmapped_cluster( +STATIC size_t +xfs_probe_cluster( struct inode *inode, struct page *startpage, struct buffer_head *bh, - struct buffer_head *head) + struct buffer_head *head, + int mapped) { + struct pagevec pvec; pgoff_t tindex, tlast, tloff; - unsigned int pg_offset, len, total = 0; - struct address_space *mapping = inode->i_mapping; + size_t total = 0; + int done = 0, i; /* First sum forwards in this page */ do { - if (buffer_mapped(bh)) - break; + if (mapped != buffer_mapped(bh)) + return total; total += bh->b_size; } while ((bh = bh->b_this_page) != head); - /* If we reached the end of the page, sum forwards in - * following pages. - */ - if (bh == head) { - tlast = i_size_read(inode) >> PAGE_CACHE_SHIFT; - /* Prune this back to avoid pathological behavior */ - tloff = min(tlast, startpage->index + 64); - for (tindex = startpage->index + 1; tindex < tloff; tindex++) { - len = xfs_probe_unmapped_page(mapping, tindex, - PAGE_CACHE_SIZE); - if (!len) - return total; + /* if we reached the end of the page, sum forwards in following pages */ + tlast = i_size_read(inode) >> PAGE_CACHE_SHIFT; + tindex = startpage->index + 1; + + /* Prune this back to avoid pathological behavior */ + tloff = min(tlast, startpage->index + 64); + + pagevec_init(&pvec, 0); + while (!done && tindex <= tloff) { + unsigned len = min_t(pgoff_t, PAGEVEC_SIZE, tlast - tindex + 1); + + if (!pagevec_lookup(&pvec, inode->i_mapping, tindex, len)) + break; + + for (i = 0; i < pagevec_count(&pvec); i++) { + struct page *page = pvec.pages[i]; + size_t pg_offset, len = 0; + + if (tindex == tlast) { + pg_offset = + i_size_read(inode) & (PAGE_CACHE_SIZE - 1); + if (!pg_offset) { + done = 1; + break; + } + } else + pg_offset = PAGE_CACHE_SIZE; + + if (page->index == tindex && !TestSetPageLocked(page)) { + len = xfs_probe_page(page, pg_offset, mapped); + unlock_page(page); + } + + if (!len) { + done = 1; + break; + } + total += len; + tindex++; } - if (tindex == tlast && - (pg_offset = i_size_read(inode) & (PAGE_CACHE_SIZE - 1))) { - total += xfs_probe_unmapped_page(mapping, - tindex, pg_offset); - } + + pagevec_release(&pvec); + cond_resched(); } + return total; } /* - * Probe for a given page (index) in the inode and test if it is delayed - * and without unwritten buffers. Returns page locked and with an extra - * reference count. + * Test if a given page is suitable for writing as part of an unwritten + * or delayed allocate extent. */ -STATIC struct page * -xfs_probe_delalloc_page( - struct inode *inode, - pgoff_t index) +STATIC int +xfs_is_delayed_page( + struct page *page, + unsigned int type) { - struct page *page; - - page = find_trylock_page(inode->i_mapping, index); - if (!page) - return NULL; if (PageWriteback(page)) - goto out; + return 0; if (page->mapping && page_has_buffers(page)) { struct buffer_head *bh, *head; @@ -437,243 +589,156 @@ xfs_probe_delalloc_page( bh = head = page_buffers(page); do { - if (buffer_unwritten(bh)) { - acceptable = 0; + if (buffer_unwritten(bh)) + acceptable = (type == IOMAP_UNWRITTEN); + else if (buffer_delay(bh)) + acceptable = (type == IOMAP_DELAY); + else if (buffer_mapped(bh)) + acceptable = (type == 0); + else break; - } else if (buffer_delay(bh)) { - acceptable = 1; - } } while ((bh = bh->b_this_page) != head); if (acceptable) - return page; - } - -out: - unlock_page(page); - return NULL; -} - -STATIC int -xfs_map_unwritten( - struct inode *inode, - struct page *start_page, - struct buffer_head *head, - struct buffer_head *curr, - unsigned long p_offset, - int block_bits, - xfs_iomap_t *iomapp, - struct writeback_control *wbc, - int startio, - int all_bh) -{ - struct buffer_head *bh = curr; - xfs_iomap_t *tmp; - xfs_ioend_t *ioend; - loff_t offset; - unsigned long nblocks = 0; - - offset = start_page->index; - offset <<= PAGE_CACHE_SHIFT; - offset += p_offset; - - ioend = xfs_alloc_ioend(inode); - - /* First map forwards in the page consecutive buffers - * covering this unwritten extent - */ - do { - if (!buffer_unwritten(bh)) - break; - tmp = xfs_offset_to_map(start_page, iomapp, p_offset); - if (!tmp) - break; - xfs_map_at_offset(start_page, bh, p_offset, block_bits, iomapp); - set_buffer_unwritten_io(bh); - bh->b_private = ioend; - p_offset += bh->b_size; - nblocks++; - } while ((bh = bh->b_this_page) != head); - - atomic_add(nblocks, &ioend->io_remaining); - - /* If we reached the end of the page, map forwards in any - * following pages which are also covered by this extent. - */ - if (bh == head) { - struct address_space *mapping = inode->i_mapping; - pgoff_t tindex, tloff, tlast; - unsigned long bs; - unsigned int pg_offset, bbits = inode->i_blkbits; - struct page *page; - - tlast = i_size_read(inode) >> PAGE_CACHE_SHIFT; - tloff = (iomapp->iomap_offset + iomapp->iomap_bsize) >> PAGE_CACHE_SHIFT; - tloff = min(tlast, tloff); - for (tindex = start_page->index + 1; tindex < tloff; tindex++) { - page = xfs_probe_unwritten_page(mapping, - tindex, iomapp, ioend, - PAGE_CACHE_SIZE, &bs, bbits); - if (!page) - break; - nblocks += bs; - atomic_add(bs, &ioend->io_remaining); - xfs_convert_page(inode, page, iomapp, wbc, ioend, - startio, all_bh); - /* stop if converting the next page might add - * enough blocks that the corresponding byte - * count won't fit in our ulong page buf length */ - if (nblocks >= ((ULONG_MAX - PAGE_SIZE) >> block_bits)) - goto enough; - } - - if (tindex == tlast && - (pg_offset = (i_size_read(inode) & (PAGE_CACHE_SIZE - 1)))) { - page = xfs_probe_unwritten_page(mapping, - tindex, iomapp, ioend, - pg_offset, &bs, bbits); - if (page) { - nblocks += bs; - atomic_add(bs, &ioend->io_remaining); - xfs_convert_page(inode, page, iomapp, wbc, ioend, - startio, all_bh); - if (nblocks >= ((ULONG_MAX - PAGE_SIZE) >> block_bits)) - goto enough; - } - } + return 1; } -enough: - ioend->io_size = (xfs_off_t)nblocks << block_bits; - ioend->io_offset = offset; - xfs_finish_ioend(ioend); return 0; } -STATIC void -xfs_submit_page( - struct page *page, - struct writeback_control *wbc, - struct buffer_head *bh_arr[], - int bh_count, - int probed_page, - int clear_dirty) -{ - struct buffer_head *bh; - int i; - - BUG_ON(PageWriteback(page)); - if (bh_count) - set_page_writeback(page); - if (clear_dirty) - clear_page_dirty(page); - unlock_page(page); - - if (bh_count) { - for (i = 0; i < bh_count; i++) { - bh = bh_arr[i]; - mark_buffer_async_write(bh); - if (buffer_unwritten(bh)) - set_buffer_unwritten_io(bh); - set_buffer_uptodate(bh); - clear_buffer_dirty(bh); - } - - for (i = 0; i < bh_count; i++) - submit_bh(WRITE, bh_arr[i]); - - if (probed_page && clear_dirty) - wbc->nr_to_write--; /* Wrote an "extra" page */ - } -} - /* * Allocate & map buffers for page given the extent map. Write it out. * except for the original page of a writepage, this is called on * delalloc/unwritten pages only, for the original page it is possible * that the page has no mapping at all. */ -STATIC void +STATIC int xfs_convert_page( struct inode *inode, struct page *page, - xfs_iomap_t *iomapp, + loff_t tindex, + xfs_iomap_t *mp, + xfs_ioend_t **ioendp, struct writeback_control *wbc, - void *private, int startio, int all_bh) { - struct buffer_head *bh_arr[MAX_BUF_PER_PAGE], *bh, *head; - xfs_iomap_t *mp = iomapp, *tmp; - unsigned long offset, end_offset; - int index = 0; + struct buffer_head *bh, *head; + xfs_off_t end_offset; + unsigned long p_offset; + unsigned int type; int bbits = inode->i_blkbits; int len, page_dirty; + int count = 0, done = 0, uptodate = 1; + xfs_off_t offset = page_offset(page); - end_offset = (i_size_read(inode) & (PAGE_CACHE_SIZE - 1)); + if (page->index != tindex) + goto fail; + if (TestSetPageLocked(page)) + goto fail; + if (PageWriteback(page)) + goto fail_unlock_page; + if (page->mapping != inode->i_mapping) + goto fail_unlock_page; + if (!xfs_is_delayed_page(page, (*ioendp)->io_type)) + goto fail_unlock_page; /* * page_dirty is initially a count of buffers on the page before * EOF and is decrememted as we move each into a cleanable state. + * + * Derivation: + * + * End offset is the highest offset that this page should represent. + * If we are on the last page, (end_offset & (PAGE_CACHE_SIZE - 1)) + * will evaluate non-zero and be less than PAGE_CACHE_SIZE and + * hence give us the correct page_dirty count. On any other page, + * it will be zero and in that case we need page_dirty to be the + * count of buffers on the page. */ + end_offset = min_t(unsigned long long, + (xfs_off_t)(page->index + 1) << PAGE_CACHE_SHIFT, + i_size_read(inode)); + len = 1 << inode->i_blkbits; - end_offset = max(end_offset, PAGE_CACHE_SIZE); - end_offset = roundup(end_offset, len); - page_dirty = end_offset / len; + p_offset = min_t(unsigned long, end_offset & (PAGE_CACHE_SIZE - 1), + PAGE_CACHE_SIZE); + p_offset = p_offset ? roundup(p_offset, len) : PAGE_CACHE_SIZE; + page_dirty = p_offset / len; - offset = 0; bh = head = page_buffers(page); do { if (offset >= end_offset) break; - if (!(PageUptodate(page) || buffer_uptodate(bh))) + if (!buffer_uptodate(bh)) + uptodate = 0; + if (!(PageUptodate(page) || buffer_uptodate(bh))) { + done = 1; continue; - if (buffer_mapped(bh) && all_bh && - !(buffer_unwritten(bh) || buffer_delay(bh))) { + } + + if (buffer_unwritten(bh) || buffer_delay(bh)) { + if (buffer_unwritten(bh)) + type = IOMAP_UNWRITTEN; + else + type = IOMAP_DELAY; + + if (!xfs_iomap_valid(mp, offset)) { + done = 1; + continue; + } + + ASSERT(!(mp->iomap_flags & IOMAP_HOLE)); + ASSERT(!(mp->iomap_flags & IOMAP_DELAY)); + + xfs_map_at_offset(bh, offset, bbits, mp); if (startio) { + xfs_add_to_ioend(inode, bh, offset, + type, ioendp, done); + } else { + set_buffer_dirty(bh); + unlock_buffer(bh); + mark_buffer_dirty(bh); + } + page_dirty--; + count++; + } else { + type = 0; + if (buffer_mapped(bh) && all_bh && startio) { lock_buffer(bh); - bh_arr[index++] = bh; + xfs_add_to_ioend(inode, bh, offset, + type, ioendp, done); + count++; page_dirty--; + } else { + done = 1; } - continue; } - tmp = xfs_offset_to_map(page, mp, offset); - if (!tmp) - continue; - ASSERT(!(tmp->iomap_flags & IOMAP_HOLE)); - ASSERT(!(tmp->iomap_flags & IOMAP_DELAY)); + } while (offset += len, (bh = bh->b_this_page) != head); - /* If this is a new unwritten extent buffer (i.e. one - * that we haven't passed in private data for, we must - * now map this buffer too. - */ - if (buffer_unwritten(bh) && !bh->b_end_io) { - ASSERT(tmp->iomap_flags & IOMAP_UNWRITTEN); - xfs_map_unwritten(inode, page, head, bh, offset, - bbits, tmp, wbc, startio, all_bh); - } else if (! (buffer_unwritten(bh) && buffer_locked(bh))) { - xfs_map_at_offset(page, bh, offset, bbits, tmp); - if (buffer_unwritten(bh)) { - set_buffer_unwritten_io(bh); - bh->b_private = private; - ASSERT(private); + if (uptodate && bh == head) + SetPageUptodate(page); + + if (startio) { + if (count) { + struct backing_dev_info *bdi; + + bdi = inode->i_mapping->backing_dev_info; + if (bdi_write_congested(bdi)) { + wbc->encountered_congestion = 1; + done = 1; + } else if (--wbc->nr_to_write <= 0) { + done = 1; } } - if (startio) { - bh_arr[index++] = bh; - } else { - set_buffer_dirty(bh); - unlock_buffer(bh); - mark_buffer_dirty(bh); - } - page_dirty--; - } while (offset += len, (bh = bh->b_this_page) != head); - - if (startio && index) { - xfs_submit_page(page, wbc, bh_arr, index, 1, !page_dirty); - } else { - unlock_page(page); + xfs_start_page_writeback(page, wbc, !page_dirty, count); } + + return done; + fail_unlock_page: + unlock_page(page); + fail: + return 1; } /* @@ -685,19 +750,31 @@ xfs_cluster_write( struct inode *inode, pgoff_t tindex, xfs_iomap_t *iomapp, + xfs_ioend_t **ioendp, struct writeback_control *wbc, int startio, int all_bh, pgoff_t tlast) { - struct page *page; + struct pagevec pvec; + int done = 0, i; - for (; tindex <= tlast; tindex++) { - page = xfs_probe_delalloc_page(inode, tindex); - if (!page) + pagevec_init(&pvec, 0); + while (!done && tindex <= tlast) { + unsigned len = min_t(pgoff_t, PAGEVEC_SIZE, tlast - tindex + 1); + + if (!pagevec_lookup(&pvec, inode->i_mapping, tindex, len)) break; - xfs_convert_page(inode, page, iomapp, wbc, NULL, - startio, all_bh); + + for (i = 0; i < pagevec_count(&pvec); i++) { + done = xfs_convert_page(inode, pvec.pages[i], tindex++, + iomapp, ioendp, wbc, startio, all_bh); + if (done) + break; + } + + pagevec_release(&pvec); + cond_resched(); } } @@ -728,18 +805,22 @@ xfs_page_state_convert( int startio, int unmapped) /* also implies page uptodate */ { - struct buffer_head *bh_arr[MAX_BUF_PER_PAGE], *bh, *head; - xfs_iomap_t *iomp, iomap; + struct buffer_head *bh, *head; + xfs_iomap_t iomap; + xfs_ioend_t *ioend = NULL, *iohead = NULL; loff_t offset; unsigned long p_offset = 0; + unsigned int type; __uint64_t end_offset; pgoff_t end_index, last_index, tlast; - int len, err, i, cnt = 0, uptodate = 1; - int flags; - int page_dirty; + ssize_t size, len; + int flags, err, iomap_valid = 0, uptodate = 1; + int page_dirty, count = 0, trylock_flag = 0; + int all_bh = unmapped; /* wait for other IO threads? */ - flags = (startio && wbc->sync_mode != WB_SYNC_NONE) ? 0 : BMAPI_TRYLOCK; + if (startio && (wbc->sync_mode == WB_SYNC_NONE && wbc->nonblocking)) + trylock_flag |= BMAPI_TRYLOCK; /* Is this page beyond the end of the file? */ offset = i_size_read(inode); @@ -754,161 +835,173 @@ xfs_page_state_convert( } } - end_offset = min_t(unsigned long long, - (loff_t)(page->index + 1) << PAGE_CACHE_SHIFT, offset); - offset = (loff_t)page->index << PAGE_CACHE_SHIFT; - /* * page_dirty is initially a count of buffers on the page before * EOF and is decrememted as we move each into a cleanable state. - */ + * + * Derivation: + * + * End offset is the highest offset that this page should represent. + * If we are on the last page, (end_offset & (PAGE_CACHE_SIZE - 1)) + * will evaluate non-zero and be less than PAGE_CACHE_SIZE and + * hence give us the correct page_dirty count. On any other page, + * it will be zero and in that case we need page_dirty to be the + * count of buffers on the page. + */ + end_offset = min_t(unsigned long long, + (xfs_off_t)(page->index + 1) << PAGE_CACHE_SHIFT, offset); len = 1 << inode->i_blkbits; - p_offset = max(p_offset, PAGE_CACHE_SIZE); - p_offset = roundup(p_offset, len); + p_offset = min_t(unsigned long, end_offset & (PAGE_CACHE_SIZE - 1), + PAGE_CACHE_SIZE); + p_offset = p_offset ? roundup(p_offset, len) : PAGE_CACHE_SIZE; page_dirty = p_offset / len; - iomp = NULL; - p_offset = 0; bh = head = page_buffers(page); + offset = page_offset(page); + flags = -1; + type = 0; + + /* TODO: cleanup count and page_dirty */ do { if (offset >= end_offset) break; if (!buffer_uptodate(bh)) uptodate = 0; - if (!(PageUptodate(page) || buffer_uptodate(bh)) && !startio) + if (!(PageUptodate(page) || buffer_uptodate(bh)) && !startio) { + /* + * the iomap is actually still valid, but the ioend + * isn't. shouldn't happen too often. + */ + iomap_valid = 0; continue; - - if (iomp) { - iomp = xfs_offset_to_map(page, &iomap, p_offset); } + if (iomap_valid) + iomap_valid = xfs_iomap_valid(&iomap, offset); + /* * First case, map an unwritten extent and prepare for * extent state conversion transaction on completion. - */ - if (buffer_unwritten(bh)) { - if (!startio) - continue; - if (!iomp) { - err = xfs_map_blocks(inode, offset, len, &iomap, - BMAPI_WRITE|BMAPI_IGNSTATE); - if (err) { - goto error; - } - iomp = xfs_offset_to_map(page, &iomap, - p_offset); + * + * Second case, allocate space for a delalloc buffer. + * We can return EAGAIN here in the release page case. + * + * Third case, an unmapped buffer was found, and we are + * in a path where we need to write the whole page out. + */ + if (buffer_unwritten(bh) || buffer_delay(bh) || + ((buffer_uptodate(bh) || PageUptodate(page)) && + !buffer_mapped(bh) && (unmapped || startio))) { + /* + * Make sure we don't use a read-only iomap + */ + if (flags == BMAPI_READ) + iomap_valid = 0; + + if (buffer_unwritten(bh)) { + type = IOMAP_UNWRITTEN; + flags = BMAPI_WRITE|BMAPI_IGNSTATE; + } else if (buffer_delay(bh)) { + type = IOMAP_DELAY; + flags = BMAPI_ALLOCATE; + if (!startio) + flags |= trylock_flag; + } else { + type = IOMAP_NEW; + flags = BMAPI_WRITE|BMAPI_MMAP; } - if (iomp) { - if (!bh->b_end_io) { - err = xfs_map_unwritten(inode, page, - head, bh, p_offset, - inode->i_blkbits, iomp, - wbc, startio, unmapped); - if (err) { - goto error; - } + + if (!iomap_valid) { + if (type == IOMAP_NEW) { + size = xfs_probe_cluster(inode, + page, bh, head, 0); } else { - set_bit(BH_Lock, &bh->b_state); + size = len; } - BUG_ON(!buffer_locked(bh)); - bh_arr[cnt++] = bh; - page_dirty--; - } - /* - * Second case, allocate space for a delalloc buffer. - * We can return EAGAIN here in the release page case. - */ - } else if (buffer_delay(bh)) { - if (!iomp) { - err = xfs_map_blocks(inode, offset, len, &iomap, - BMAPI_ALLOCATE | flags); - if (err) { + + err = xfs_map_blocks(inode, offset, size, + &iomap, flags); + if (err) goto error; - } - iomp = xfs_offset_to_map(page, &iomap, - p_offset); + iomap_valid = xfs_iomap_valid(&iomap, offset); } - if (iomp) { - xfs_map_at_offset(page, bh, p_offset, - inode->i_blkbits, iomp); + if (iomap_valid) { + xfs_map_at_offset(bh, offset, + inode->i_blkbits, &iomap); if (startio) { - bh_arr[cnt++] = bh; + xfs_add_to_ioend(inode, bh, offset, + type, &ioend, + !iomap_valid); } else { set_buffer_dirty(bh); unlock_buffer(bh); mark_buffer_dirty(bh); } page_dirty--; + count++; + } + } else if (buffer_uptodate(bh) && startio) { + /* + * we got here because the buffer is already mapped. + * That means it must already have extents allocated + * underneath it. Map the extent by reading it. + */ + if (!iomap_valid || type != 0) { + flags = BMAPI_READ; + size = xfs_probe_cluster(inode, page, bh, + head, 1); + err = xfs_map_blocks(inode, offset, size, + &iomap, flags); + if (err) + goto error; + iomap_valid = xfs_iomap_valid(&iomap, offset); } - } else if ((buffer_uptodate(bh) || PageUptodate(page)) && - (unmapped || startio)) { - if (!buffer_mapped(bh)) { - int size; - - /* - * Getting here implies an unmapped buffer - * was found, and we are in a path where we - * need to write the whole page out. - */ - if (!iomp) { - size = xfs_probe_unmapped_cluster( - inode, page, bh, head); - err = xfs_map_blocks(inode, offset, - size, &iomap, - BMAPI_WRITE|BMAPI_MMAP); - if (err) { - goto error; - } - iomp = xfs_offset_to_map(page, &iomap, - p_offset); - } - if (iomp) { - xfs_map_at_offset(page, - bh, p_offset, - inode->i_blkbits, iomp); - if (startio) { - bh_arr[cnt++] = bh; - } else { - set_buffer_dirty(bh); - unlock_buffer(bh); - mark_buffer_dirty(bh); - } - page_dirty--; - } - } else if (startio) { - if (buffer_uptodate(bh) && - !test_and_set_bit(BH_Lock, &bh->b_state)) { - bh_arr[cnt++] = bh; - page_dirty--; - } + type = 0; + if (!test_and_set_bit(BH_Lock, &bh->b_state)) { + ASSERT(buffer_mapped(bh)); + if (iomap_valid) + all_bh = 1; + xfs_add_to_ioend(inode, bh, offset, type, + &ioend, !iomap_valid); + page_dirty--; + count++; + } else { + iomap_valid = 0; } + } else if ((buffer_uptodate(bh) || PageUptodate(page)) && + (unmapped || startio)) { + iomap_valid = 0; } - } while (offset += len, p_offset += len, - ((bh = bh->b_this_page) != head)); + + if (!iohead) + iohead = ioend; + + } while (offset += len, ((bh = bh->b_this_page) != head)); if (uptodate && bh == head) SetPageUptodate(page); - if (startio) { - xfs_submit_page(page, wbc, bh_arr, cnt, 0, !page_dirty); - } + if (startio) + xfs_start_page_writeback(page, wbc, 1, count); - if (iomp) { - offset = (iomp->iomap_offset + iomp->iomap_bsize - 1) >> + if (ioend && iomap_valid) { + offset = (iomap.iomap_offset + iomap.iomap_bsize - 1) >> PAGE_CACHE_SHIFT; tlast = min_t(pgoff_t, offset, last_index); - xfs_cluster_write(inode, page->index + 1, iomp, wbc, - startio, unmapped, tlast); + xfs_cluster_write(inode, page->index + 1, &iomap, &ioend, + wbc, startio, all_bh, tlast); } + if (iohead) + xfs_submit_ioend(iohead); + return page_dirty; error: - for (i = 0; i < cnt; i++) { - unlock_buffer(bh_arr[i]); - } + if (iohead) + xfs_cancel_ioend(iohead); /* * If it's delalloc and we have nowhere to put it, @@ -916,9 +1009,8 @@ error: * us to try again. */ if (err != -EAGAIN) { - if (!unmapped) { + if (!unmapped) block_invalidatepage(page, 0); - } ClearPageUptodate(page); } return err; @@ -982,7 +1074,7 @@ __linvfs_get_block( } /* If this is a realtime file, data might be on a new device */ - bh_result->b_bdev = iomap.iomap_target->pbr_bdev; + bh_result->b_bdev = iomap.iomap_target->bt_bdev; /* If we previously allocated a block out beyond eof and * we are now coming back to use it then we will need to @@ -1094,10 +1186,10 @@ linvfs_direct_IO( if (error) return -error; - iocb->private = xfs_alloc_ioend(inode); + iocb->private = xfs_alloc_ioend(inode, IOMAP_UNWRITTEN); ret = blockdev_direct_IO_own_locking(rw, iocb, inode, - iomap.iomap_target->pbr_bdev, + iomap.iomap_target->bt_bdev, iov, offset, nr_segs, linvfs_get_blocks_direct, linvfs_end_io_direct); diff --git a/fs/xfs/linux-2.6/xfs_aops.h b/fs/xfs/linux-2.6/xfs_aops.h index 4720758..55339dd 100644 --- a/fs/xfs/linux-2.6/xfs_aops.h +++ b/fs/xfs/linux-2.6/xfs_aops.h @@ -23,14 +23,24 @@ extern mempool_t *xfs_ioend_pool; typedef void (*xfs_ioend_func_t)(void *); +/* + * xfs_ioend struct manages large extent writes for XFS. + * It can manage several multi-page bio's at once. + */ typedef struct xfs_ioend { + struct xfs_ioend *io_list; /* next ioend in chain */ + unsigned int io_type; /* delalloc / unwritten */ unsigned int io_uptodate; /* I/O status register */ atomic_t io_remaining; /* hold count */ struct vnode *io_vnode; /* file being written to */ struct buffer_head *io_buffer_head;/* buffer linked list head */ + struct buffer_head *io_buffer_tail;/* buffer linked list tail */ size_t io_size; /* size of the extent */ xfs_off_t io_offset; /* offset in the file */ struct work_struct io_work; /* xfsdatad work queue */ } xfs_ioend_t; +extern struct address_space_operations linvfs_aops; +extern int linvfs_get_block(struct inode *, sector_t, struct buffer_head *, int); + #endif /* __XFS_IOPS_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index 6fe21d2..e44b7c1 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -31,76 +31,77 @@ #include <linux/kthread.h> #include "xfs_linux.h" -STATIC kmem_cache_t *pagebuf_zone; -STATIC kmem_shaker_t pagebuf_shake; +STATIC kmem_zone_t *xfs_buf_zone; +STATIC kmem_shaker_t xfs_buf_shake; +STATIC int xfsbufd(void *); STATIC int xfsbufd_wakeup(int, gfp_t); -STATIC void pagebuf_delwri_queue(xfs_buf_t *, int); +STATIC void xfs_buf_delwri_queue(xfs_buf_t *, int); STATIC struct workqueue_struct *xfslogd_workqueue; struct workqueue_struct *xfsdatad_workqueue; -#ifdef PAGEBUF_TRACE +#ifdef XFS_BUF_TRACE void -pagebuf_trace( - xfs_buf_t *pb, +xfs_buf_trace( + xfs_buf_t *bp, char *id, void *data, void *ra) { - ktrace_enter(pagebuf_trace_buf, - pb, id, - (void *)(unsigned long)pb->pb_flags, - (void *)(unsigned long)pb->pb_hold.counter, - (void *)(unsigned long)pb->pb_sema.count.counter, + ktrace_enter(xfs_buf_trace_buf, + bp, id, + (void *)(unsigned long)bp->b_flags, + (void *)(unsigned long)bp->b_hold.counter, + (void *)(unsigned long)bp->b_sema.count.counter, (void *)current, data, ra, - (void *)(unsigned long)((pb->pb_file_offset>>32) & 0xffffffff), - (void *)(unsigned long)(pb->pb_file_offset & 0xffffffff), - (void *)(unsigned long)pb->pb_buffer_length, + (void *)(unsigned long)((bp->b_file_offset>>32) & 0xffffffff), + (void *)(unsigned long)(bp->b_file_offset & 0xffffffff), + (void *)(unsigned long)bp->b_buffer_length, NULL, NULL, NULL, NULL, NULL); } -ktrace_t *pagebuf_trace_buf; -#define PAGEBUF_TRACE_SIZE 4096 -#define PB_TRACE(pb, id, data) \ - pagebuf_trace(pb, id, (void *)data, (void *)__builtin_return_address(0)) +ktrace_t *xfs_buf_trace_buf; +#define XFS_BUF_TRACE_SIZE 4096 +#define XB_TRACE(bp, id, data) \ + xfs_buf_trace(bp, id, (void *)data, (void *)__builtin_return_address(0)) #else -#define PB_TRACE(pb, id, data) do { } while (0) +#define XB_TRACE(bp, id, data) do { } while (0) #endif -#ifdef PAGEBUF_LOCK_TRACKING -# define PB_SET_OWNER(pb) ((pb)->pb_last_holder = current->pid) -# define PB_CLEAR_OWNER(pb) ((pb)->pb_last_holder = -1) -# define PB_GET_OWNER(pb) ((pb)->pb_last_holder) +#ifdef XFS_BUF_LOCK_TRACKING +# define XB_SET_OWNER(bp) ((bp)->b_last_holder = current->pid) +# define XB_CLEAR_OWNER(bp) ((bp)->b_last_holder = -1) +# define XB_GET_OWNER(bp) ((bp)->b_last_holder) #else -# define PB_SET_OWNER(pb) do { } while (0) -# define PB_CLEAR_OWNER(pb) do { } while (0) -# define PB_GET_OWNER(pb) do { } while (0) +# define XB_SET_OWNER(bp) do { } while (0) +# define XB_CLEAR_OWNER(bp) do { } while (0) +# define XB_GET_OWNER(bp) do { } while (0) #endif -#define pb_to_gfp(flags) \ - ((((flags) & PBF_READ_AHEAD) ? __GFP_NORETRY : \ - ((flags) & PBF_DONT_BLOCK) ? GFP_NOFS : GFP_KERNEL) | __GFP_NOWARN) +#define xb_to_gfp(flags) \ + ((((flags) & XBF_READ_AHEAD) ? __GFP_NORETRY : \ + ((flags) & XBF_DONT_BLOCK) ? GFP_NOFS : GFP_KERNEL) | __GFP_NOWARN) -#define pb_to_km(flags) \ - (((flags) & PBF_DONT_BLOCK) ? KM_NOFS : KM_SLEEP) +#define xb_to_km(flags) \ + (((flags) & XBF_DONT_BLOCK) ? KM_NOFS : KM_SLEEP) -#define pagebuf_allocate(flags) \ - kmem_zone_alloc(pagebuf_zone, pb_to_km(flags)) -#define pagebuf_deallocate(pb) \ - kmem_zone_free(pagebuf_zone, (pb)); +#define xfs_buf_allocate(flags) \ + kmem_zone_alloc(xfs_buf_zone, xb_to_km(flags)) +#define xfs_buf_deallocate(bp) \ + kmem_zone_free(xfs_buf_zone, (bp)); /* - * Page Region interfaces. + * Page Region interfaces. * - * For pages in filesystems where the blocksize is smaller than the - * pagesize, we use the page->private field (long) to hold a bitmap - * of uptodate regions within the page. + * For pages in filesystems where the blocksize is smaller than the + * pagesize, we use the page->private field (long) to hold a bitmap + * of uptodate regions within the page. * - * Each such region is "bytes per page / bits per long" bytes long. + * Each such region is "bytes per page / bits per long" bytes long. * - * NBPPR == number-of-bytes-per-page-region - * BTOPR == bytes-to-page-region (rounded up) - * BTOPRT == bytes-to-page-region-truncated (rounded down) + * NBPPR == number-of-bytes-per-page-region + * BTOPR == bytes-to-page-region (rounded up) + * BTOPRT == bytes-to-page-region-truncated (rounded down) */ #if (BITS_PER_LONG == 32) #define PRSHIFT (PAGE_CACHE_SHIFT - 5) /* (32 == 1<<5) */ @@ -159,7 +160,7 @@ test_page_region( } /* - * Mapping of multi-page buffers into contiguous virtual space + * Mapping of multi-page buffers into contiguous virtual space */ typedef struct a_list { @@ -172,7 +173,7 @@ STATIC int as_list_len; STATIC DEFINE_SPINLOCK(as_lock); /* - * Try to batch vunmaps because they are costly. + * Try to batch vunmaps because they are costly. */ STATIC void free_address( @@ -215,83 +216,83 @@ purge_addresses(void) } /* - * Internal pagebuf object manipulation + * Internal xfs_buf_t object manipulation */ STATIC void -_pagebuf_initialize( - xfs_buf_t *pb, +_xfs_buf_initialize( + xfs_buf_t *bp, xfs_buftarg_t *target, - loff_t range_base, + xfs_off_t range_base, size_t range_length, - page_buf_flags_t flags) + xfs_buf_flags_t flags) { /* - * We don't want certain flags to appear in pb->pb_flags. + * We don't want certain flags to appear in b_flags. */ - flags &= ~(PBF_LOCK|PBF_MAPPED|PBF_DONT_BLOCK|PBF_READ_AHEAD); - - memset(pb, 0, sizeof(xfs_buf_t)); - atomic_set(&pb->pb_hold, 1); - init_MUTEX_LOCKED(&pb->pb_iodonesema); - INIT_LIST_HEAD(&pb->pb_list); - INIT_LIST_HEAD(&pb->pb_hash_list); - init_MUTEX_LOCKED(&pb->pb_sema); /* held, no waiters */ - PB_SET_OWNER(pb); - pb->pb_target = target; - pb->pb_file_offset = range_base; + flags &= ~(XBF_LOCK|XBF_MAPPED|XBF_DONT_BLOCK|XBF_READ_AHEAD); + + memset(bp, 0, sizeof(xfs_buf_t)); + atomic_set(&bp->b_hold, 1); + init_MUTEX_LOCKED(&bp->b_iodonesema); + INIT_LIST_HEAD(&bp->b_list); + INIT_LIST_HEAD(&bp->b_hash_list); + init_MUTEX_LOCKED(&bp->b_sema); /* held, no waiters */ + XB_SET_OWNER(bp); + bp->b_target = target; + bp->b_file_offset = range_base; /* * Set buffer_length and count_desired to the same value initially. * I/O routines should use count_desired, which will be the same in * most cases but may be reset (e.g. XFS recovery). */ - pb->pb_buffer_length = pb->pb_count_desired = range_length; - pb->pb_flags = flags; - pb->pb_bn = XFS_BUF_DADDR_NULL; - atomic_set(&pb->pb_pin_count, 0); - init_waitqueue_head(&pb->pb_waiters); - - XFS_STATS_INC(pb_create); - PB_TRACE(pb, "initialize", target); + bp->b_buffer_length = bp->b_count_desired = range_length; + bp->b_flags = flags; + bp->b_bn = XFS_BUF_DADDR_NULL; + atomic_set(&bp->b_pin_count, 0); + init_waitqueue_head(&bp->b_waiters); + + XFS_STATS_INC(xb_create); + XB_TRACE(bp, "initialize", target); } /* - * Allocate a page array capable of holding a specified number - * of pages, and point the page buf at it. + * Allocate a page array capable of holding a specified number + * of pages, and point the page buf at it. */ STATIC int -_pagebuf_get_pages( - xfs_buf_t *pb, +_xfs_buf_get_pages( + xfs_buf_t *bp, int page_count, - page_buf_flags_t flags) + xfs_buf_flags_t flags) { /* Make sure that we have a page list */ - if (pb->pb_pages == NULL) { - pb->pb_offset = page_buf_poff(pb->pb_file_offset); - pb->pb_page_count = page_count; - if (page_count <= PB_PAGES) { - pb->pb_pages = pb->pb_page_array; + if (bp->b_pages == NULL) { + bp->b_offset = xfs_buf_poff(bp->b_file_offset); + bp->b_page_count = page_count; + if (page_count <= XB_PAGES) { + bp->b_pages = bp->b_page_array; } else { - pb->pb_pages = kmem_alloc(sizeof(struct page *) * - page_count, pb_to_km(flags)); - if (pb->pb_pages == NULL) + bp->b_pages = kmem_alloc(sizeof(struct page *) * + page_count, xb_to_km(flags)); + if (bp->b_pages == NULL) return -ENOMEM; } - memset(pb->pb_pages, 0, sizeof(struct page *) * page_count); + memset(bp->b_pages, 0, sizeof(struct page *) * page_count); } return 0; } /* - * Frees pb_pages if it was malloced. + * Frees b_pages if it was allocated. */ STATIC void -_pagebuf_free_pages( +_xfs_buf_free_pages( xfs_buf_t *bp) { - if (bp->pb_pages != bp->pb_page_array) { - kmem_free(bp->pb_pages, - bp->pb_page_count * sizeof(struct page *)); + if (bp->b_pages != bp->b_page_array) { + kmem_free(bp->b_pages, + bp->b_page_count * sizeof(struct page *)); } } @@ -299,79 +300,79 @@ _pagebuf_free_pages( * Releases the specified buffer. * * The modification state of any associated pages is left unchanged. - * The buffer most not be on any hash - use pagebuf_rele instead for + * The buffer most not be on any hash - use xfs_buf_rele instead for * hashed and refcounted buffers */ void -pagebuf_free( +xfs_buf_free( xfs_buf_t *bp) { - PB_TRACE(bp, "free", 0); + XB_TRACE(bp, "free", 0); - ASSERT(list_empty(&bp->pb_hash_list)); + ASSERT(list_empty(&bp->b_hash_list)); - if (bp->pb_flags & _PBF_PAGE_CACHE) { + if (bp->b_flags & _XBF_PAGE_CACHE) { uint i; - if ((bp->pb_flags & PBF_MAPPED) && (bp->pb_page_count > 1)) - free_address(bp->pb_addr - bp->pb_offset); + if ((bp->b_flags & XBF_MAPPED) && (bp->b_page_count > 1)) + free_address(bp->b_addr - bp->b_offset); - for (i = 0; i < bp->pb_page_count; i++) - page_cache_release(bp->pb_pages[i]); - _pagebuf_free_pages(bp); - } else if (bp->pb_flags & _PBF_KMEM_ALLOC) { + for (i = 0; i < bp->b_page_count; i++) + page_cache_release(bp->b_pages[i]); + _xfs_buf_free_pages(bp); + } else if (bp->b_flags & _XBF_KMEM_ALLOC) { /* - * XXX(hch): bp->pb_count_desired might be incorrect (see - * pagebuf_associate_memory for details), but fortunately + * XXX(hch): bp->b_count_desired might be incorrect (see + * xfs_buf_associate_memory for details), but fortunately * the Linux version of kmem_free ignores the len argument.. */ - kmem_free(bp->pb_addr, bp->pb_count_desired); - _pagebuf_free_pages(bp); + kmem_free(bp->b_addr, bp->b_count_desired); + _xfs_buf_free_pages(bp); } - pagebuf_deallocate(bp); + xfs_buf_deallocate(bp); } /* * Finds all pages for buffer in question and builds it's page list. */ STATIC int -_pagebuf_lookup_pages( +_xfs_buf_lookup_pages( xfs_buf_t *bp, uint flags) { - struct address_space *mapping = bp->pb_target->pbr_mapping; - size_t blocksize = bp->pb_target->pbr_bsize; - size_t size = bp->pb_count_desired; + struct address_space *mapping = bp->b_target->bt_mapping; + size_t blocksize = bp->b_target->bt_bsize; + size_t size = bp->b_count_desired; size_t nbytes, offset; - gfp_t gfp_mask = pb_to_gfp(flags); + gfp_t gfp_mask = xb_to_gfp(flags); unsigned short page_count, i; pgoff_t first; - loff_t end; + xfs_off_t end; int error; - end = bp->pb_file_offset + bp->pb_buffer_length; - page_count = page_buf_btoc(end) - page_buf_btoct(bp->pb_file_offset); + end = bp->b_file_offset + bp->b_buffer_length; + page_count = xfs_buf_btoc(end) - xfs_buf_btoct(bp->b_file_offset); - error = _pagebuf_get_pages(bp, page_count, flags); + error = _xfs_buf_get_pages(bp, page_count, flags); if (unlikely(error)) return error; - bp->pb_flags |= _PBF_PAGE_CACHE; + bp->b_flags |= _XBF_PAGE_CACHE; - offset = bp->pb_offset; - first = bp->pb_file_offset >> PAGE_CACHE_SHIFT; + offset = bp->b_offset; + first = bp->b_file_offset >> PAGE_CACHE_SHIFT; - for (i = 0; i < bp->pb_page_count; i++) { + for (i = 0; i < bp->b_page_count; i++) { struct page *page; uint retries = 0; retry: page = find_or_create_page(mapping, first + i, gfp_mask); if (unlikely(page == NULL)) { - if (flags & PBF_READ_AHEAD) { - bp->pb_page_count = i; - for (i = 0; i < bp->pb_page_count; i++) - unlock_page(bp->pb_pages[i]); + if (flags & XBF_READ_AHEAD) { + bp->b_page_count = i; + for (i = 0; i < bp->b_page_count; i++) + unlock_page(bp->b_pages[i]); return -ENOMEM; } @@ -387,13 +388,13 @@ _pagebuf_lookup_pages( "deadlock in %s (mode:0x%x)\n", __FUNCTION__, gfp_mask); - XFS_STATS_INC(pb_page_retries); + XFS_STATS_INC(xb_page_retries); xfsbufd_wakeup(0, gfp_mask); blk_congestion_wait(WRITE, HZ/50); goto retry; } - XFS_STATS_INC(pb_page_found); + XFS_STATS_INC(xb_page_found); nbytes = min_t(size_t, size, PAGE_CACHE_SIZE - offset); size -= nbytes; @@ -401,27 +402,27 @@ _pagebuf_lookup_pages( if (!PageUptodate(page)) { page_count--; if (blocksize >= PAGE_CACHE_SIZE) { - if (flags & PBF_READ) - bp->pb_locked = 1; + if (flags & XBF_READ) + bp->b_locked = 1; } else if (!PagePrivate(page)) { if (test_page_region(page, offset, nbytes)) page_count++; } } - bp->pb_pages[i] = page; + bp->b_pages[i] = page; offset = 0; } - if (!bp->pb_locked) { - for (i = 0; i < bp->pb_page_count; i++) - unlock_page(bp->pb_pages[i]); + if (!bp->b_locked) { + for (i = 0; i < bp->b_page_count; i++) + unlock_page(bp->b_pages[i]); } - if (page_count == bp->pb_page_count) - bp->pb_flags |= PBF_DONE; + if (page_count == bp->b_page_count) + bp->b_flags |= XBF_DONE; - PB_TRACE(bp, "lookup_pages", (long)page_count); + XB_TRACE(bp, "lookup_pages", (long)page_count); return error; } @@ -429,23 +430,23 @@ _pagebuf_lookup_pages( * Map buffer into kernel address-space if nessecary. */ STATIC int -_pagebuf_map_pages( +_xfs_buf_map_pages( xfs_buf_t *bp, uint flags) { /* A single page buffer is always mappable */ - if (bp->pb_page_count == 1) { - bp->pb_addr = page_address(bp->pb_pages[0]) + bp->pb_offset; - bp->pb_flags |= PBF_MAPPED; - } else if (flags & PBF_MAPPED) { + if (bp->b_page_count == 1) { + bp->b_addr = page_address(bp->b_pages[0]) + bp->b_offset; + bp->b_flags |= XBF_MAPPED; + } else if (flags & XBF_MAPPED) { if (as_list_len > 64) purge_addresses(); - bp->pb_addr = vmap(bp->pb_pages, bp->pb_page_count, - VM_MAP, PAGE_KERNEL); - if (unlikely(bp->pb_addr == NULL)) + bp->b_addr = vmap(bp->b_pages, bp->b_page_count, + VM_MAP, PAGE_KERNEL); + if (unlikely(bp->b_addr == NULL)) return -ENOMEM; - bp->pb_addr += bp->pb_offset; - bp->pb_flags |= PBF_MAPPED; + bp->b_addr += bp->b_offset; + bp->b_flags |= XBF_MAPPED; } return 0; @@ -456,9 +457,7 @@ _pagebuf_map_pages( */ /* - * _pagebuf_find - * - * Looks up, and creates if absent, a lockable buffer for + * Look up, and creates if absent, a lockable buffer for * a given range of an inode. The buffer is returned * locked. If other overlapping buffers exist, they are * released before the new buffer is created and locked, @@ -466,55 +465,55 @@ _pagebuf_map_pages( * are unlocked. No I/O is implied by this call. */ xfs_buf_t * -_pagebuf_find( +_xfs_buf_find( xfs_buftarg_t *btp, /* block device target */ - loff_t ioff, /* starting offset of range */ + xfs_off_t ioff, /* starting offset of range */ size_t isize, /* length of range */ - page_buf_flags_t flags, /* PBF_TRYLOCK */ - xfs_buf_t *new_pb)/* newly allocated buffer */ + xfs_buf_flags_t flags, + xfs_buf_t *new_bp) { - loff_t range_base; + xfs_off_t range_base; size_t range_length; xfs_bufhash_t *hash; - xfs_buf_t *pb, *n; + xfs_buf_t *bp, *n; range_base = (ioff << BBSHIFT); range_length = (isize << BBSHIFT); /* Check for IOs smaller than the sector size / not sector aligned */ - ASSERT(!(range_length < (1 << btp->pbr_sshift))); - ASSERT(!(range_base & (loff_t)btp->pbr_smask)); + ASSERT(!(range_length < (1 << btp->bt_sshift))); + ASSERT(!(range_base & (xfs_off_t)btp->bt_smask)); hash = &btp->bt_hash[hash_long((unsigned long)ioff, btp->bt_hashshift)]; spin_lock(&hash->bh_lock); - list_for_each_entry_safe(pb, n, &hash->bh_list, pb_hash_list) { - ASSERT(btp == pb->pb_target); - if (pb->pb_file_offset == range_base && - pb->pb_buffer_length == range_length) { + list_for_each_entry_safe(bp, n, &hash->bh_list, b_hash_list) { + ASSERT(btp == bp->b_target); + if (bp->b_file_offset == range_base && + bp->b_buffer_length == range_length) { /* - * If we look at something bring it to the + * If we look at something, bring it to the * front of the list for next time. */ - atomic_inc(&pb->pb_hold); - list_move(&pb->pb_hash_list, &hash->bh_list); + atomic_inc(&bp->b_hold); + list_move(&bp->b_hash_list, &hash->bh_list); goto found; } } /* No match found */ - if (new_pb) { - _pagebuf_initialize(new_pb, btp, range_base, + if (new_bp) { + _xfs_buf_initialize(new_bp, btp, range_base, range_length, flags); - new_pb->pb_hash = hash; - list_add(&new_pb->pb_hash_list, &hash->bh_list); + new_bp->b_hash = hash; + list_add(&new_bp->b_hash_list, &hash->bh_list); } else { - XFS_STATS_INC(pb_miss_locked); + XFS_STATS_INC(xb_miss_locked); } spin_unlock(&hash->bh_lock); - return new_pb; + return new_bp; found: spin_unlock(&hash->bh_lock); @@ -523,74 +522,72 @@ found: * if this does not work then we need to drop the * spinlock and do a hard attempt on the semaphore. */ - if (down_trylock(&pb->pb_sema)) { - if (!(flags & PBF_TRYLOCK)) { + if (down_trylock(&bp->b_sema)) { + if (!(flags & XBF_TRYLOCK)) { /* wait for buffer ownership */ - PB_TRACE(pb, "get_lock", 0); - pagebuf_lock(pb); - XFS_STATS_INC(pb_get_locked_waited); + XB_TRACE(bp, "get_lock", 0); + xfs_buf_lock(bp); + XFS_STATS_INC(xb_get_locked_waited); } else { /* We asked for a trylock and failed, no need * to look at file offset and length here, we - * know that this pagebuf at least overlaps our - * pagebuf and is locked, therefore our buffer - * either does not exist, or is this buffer + * know that this buffer at least overlaps our + * buffer and is locked, therefore our buffer + * either does not exist, or is this buffer. */ - - pagebuf_rele(pb); - XFS_STATS_INC(pb_busy_locked); - return (NULL); + xfs_buf_rele(bp); + XFS_STATS_INC(xb_busy_locked); + return NULL; } } else { /* trylock worked */ - PB_SET_OWNER(pb); + XB_SET_OWNER(bp); } - if (pb->pb_flags & PBF_STALE) { - ASSERT((pb->pb_flags & _PBF_DELWRI_Q) == 0); - pb->pb_flags &= PBF_MAPPED; + if (bp->b_flags & XBF_STALE) { + ASSERT((bp->b_flags & _XBF_DELWRI_Q) == 0); + bp->b_flags &= XBF_MAPPED; } - PB_TRACE(pb, "got_lock", 0); - XFS_STATS_INC(pb_get_locked); - return (pb); + XB_TRACE(bp, "got_lock", 0); + XFS_STATS_INC(xb_get_locked); + return bp; } /* - * xfs_buf_get_flags assembles a buffer covering the specified range. - * + * Assembles a buffer covering the specified range. * Storage in memory for all portions of the buffer will be allocated, * although backing storage may not be. */ xfs_buf_t * -xfs_buf_get_flags( /* allocate a buffer */ +xfs_buf_get_flags( xfs_buftarg_t *target,/* target for buffer */ - loff_t ioff, /* starting offset of range */ + xfs_off_t ioff, /* starting offset of range */ size_t isize, /* length of range */ - page_buf_flags_t flags) /* PBF_TRYLOCK */ + xfs_buf_flags_t flags) { - xfs_buf_t *pb, *new_pb; + xfs_buf_t *bp, *new_bp; int error = 0, i; - new_pb = pagebuf_allocate(flags); - if (unlikely(!new_pb)) + new_bp = xfs_buf_allocate(flags); + if (unlikely(!new_bp)) return NULL; - pb = _pagebuf_find(target, ioff, isize, flags, new_pb); - if (pb == new_pb) { - error = _pagebuf_lookup_pages(pb, flags); + bp = _xfs_buf_find(target, ioff, isize, flags, new_bp); + if (bp == new_bp) { + error = _xfs_buf_lookup_pages(bp, flags); if (error) goto no_buffer; } else { - pagebuf_deallocate(new_pb); - if (unlikely(pb == NULL)) + xfs_buf_deallocate(new_bp); + if (unlikely(bp == NULL)) return NULL; } - for (i = 0; i < pb->pb_page_count; i++) - mark_page_accessed(pb->pb_pages[i]); + for (i = 0; i < bp->b_page_count; i++) + mark_page_accessed(bp->b_pages[i]); - if (!(pb->pb_flags & PBF_MAPPED)) { - error = _pagebuf_map_pages(pb, flags); + if (!(bp->b_flags & XBF_MAPPED)) { + error = _xfs_buf_map_pages(bp, flags); if (unlikely(error)) { printk(KERN_WARNING "%s: failed to map pages\n", __FUNCTION__); @@ -598,97 +595,97 @@ xfs_buf_get_flags( /* allocate a buffer */ } } - XFS_STATS_INC(pb_get); + XFS_STATS_INC(xb_get); /* * Always fill in the block number now, the mapped cases can do * their own overlay of this later. */ - pb->pb_bn = ioff; - pb->pb_count_desired = pb->pb_buffer_length; + bp->b_bn = ioff; + bp->b_count_desired = bp->b_buffer_length; - PB_TRACE(pb, "get", (unsigned long)flags); - return pb; + XB_TRACE(bp, "get", (unsigned long)flags); + return bp; no_buffer: - if (flags & (PBF_LOCK | PBF_TRYLOCK)) - pagebuf_unlock(pb); - pagebuf_rele(pb); + if (flags & (XBF_LOCK | XBF_TRYLOCK)) + xfs_buf_unlock(bp); + xfs_buf_rele(bp); return NULL; } xfs_buf_t * xfs_buf_read_flags( xfs_buftarg_t *target, - loff_t ioff, + xfs_off_t ioff, size_t isize, - page_buf_flags_t flags) + xfs_buf_flags_t flags) { - xfs_buf_t *pb; - - flags |= PBF_READ; - - pb = xfs_buf_get_flags(target, ioff, isize, flags); - if (pb) { - if (!XFS_BUF_ISDONE(pb)) { - PB_TRACE(pb, "read", (unsigned long)flags); - XFS_STATS_INC(pb_get_read); - pagebuf_iostart(pb, flags); - } else if (flags & PBF_ASYNC) { - PB_TRACE(pb, "read_async", (unsigned long)flags); + xfs_buf_t *bp; + + flags |= XBF_READ; + + bp = xfs_buf_get_flags(target, ioff, isize, flags); + if (bp) { + if (!XFS_BUF_ISDONE(bp)) { + XB_TRACE(bp, "read", (unsigned long)flags); + XFS_STATS_INC(xb_get_read); + xfs_buf_iostart(bp, flags); + } else if (flags & XBF_ASYNC) { + XB_TRACE(bp, "read_async", (unsigned long)flags); /* * Read ahead call which is already satisfied, * drop the buffer */ goto no_buffer; } else { - PB_TRACE(pb, "read_done", (unsigned long)flags); + XB_TRACE(bp, "read_done", (unsigned long)flags); /* We do not want read in the flags */ - pb->pb_flags &= ~PBF_READ; + bp->b_flags &= ~XBF_READ; } } - return pb; + return bp; no_buffer: - if (flags & (PBF_LOCK | PBF_TRYLOCK)) - pagebuf_unlock(pb); - pagebuf_rele(pb); + if (flags & (XBF_LOCK | XBF_TRYLOCK)) + xfs_buf_unlock(bp); + xfs_buf_rele(bp); return NULL; } /* - * If we are not low on memory then do the readahead in a deadlock - * safe manner. + * If we are not low on memory then do the readahead in a deadlock + * safe manner. */ void -pagebuf_readahead( +xfs_buf_readahead( xfs_buftarg_t *target, - loff_t ioff, + xfs_off_t ioff, size_t isize, - page_buf_flags_t flags) + xfs_buf_flags_t flags) { struct backing_dev_info *bdi; - bdi = target->pbr_mapping->backing_dev_info; + bdi = target->bt_mapping->backing_dev_info; if (bdi_read_congested(bdi)) return; - flags |= (PBF_TRYLOCK|PBF_ASYNC|PBF_READ_AHEAD); + flags |= (XBF_TRYLOCK|XBF_ASYNC|XBF_READ_AHEAD); xfs_buf_read_flags(target, ioff, isize, flags); } xfs_buf_t * -pagebuf_get_empty( +xfs_buf_get_empty( size_t len, xfs_buftarg_t *target) { - xfs_buf_t *pb; + xfs_buf_t *bp; - pb = pagebuf_allocate(0); - if (pb) - _pagebuf_initialize(pb, target, 0, len, 0); - return pb; + bp = xfs_buf_allocate(0); + if (bp) + _xfs_buf_initialize(bp, target, 0, len, 0); + return bp; } static inline struct page * @@ -704,8 +701,8 @@ mem_to_page( } int -pagebuf_associate_memory( - xfs_buf_t *pb, +xfs_buf_associate_memory( + xfs_buf_t *bp, void *mem, size_t len) { @@ -722,40 +719,40 @@ pagebuf_associate_memory( page_count++; /* Free any previous set of page pointers */ - if (pb->pb_pages) - _pagebuf_free_pages(pb); + if (bp->b_pages) + _xfs_buf_free_pages(bp); - pb->pb_pages = NULL; - pb->pb_addr = mem; + bp->b_pages = NULL; + bp->b_addr = mem; - rval = _pagebuf_get_pages(pb, page_count, 0); + rval = _xfs_buf_get_pages(bp, page_count, 0); if (rval) return rval; - pb->pb_offset = offset; + bp->b_offset = offset; ptr = (size_t) mem & PAGE_CACHE_MASK; end = PAGE_CACHE_ALIGN((size_t) mem + len); end_cur = end; /* set up first page */ - pb->pb_pages[0] = mem_to_page(mem); + bp->b_pages[0] = mem_to_page(mem); ptr += PAGE_CACHE_SIZE; - pb->pb_page_count = ++i; + bp->b_page_count = ++i; while (ptr < end) { - pb->pb_pages[i] = mem_to_page((void *)ptr); - pb->pb_page_count = ++i; + bp->b_pages[i] = mem_to_page((void *)ptr); + bp->b_page_count = ++i; ptr += PAGE_CACHE_SIZE; } - pb->pb_locked = 0; + bp->b_locked = 0; - pb->pb_count_desired = pb->pb_buffer_length = len; - pb->pb_flags |= PBF_MAPPED; + bp->b_count_desired = bp->b_buffer_length = len; + bp->b_flags |= XBF_MAPPED; return 0; } xfs_buf_t * -pagebuf_get_no_daddr( +xfs_buf_get_noaddr( size_t len, xfs_buftarg_t *target) { @@ -764,10 +761,10 @@ pagebuf_get_no_daddr( void *data; int error; - bp = pagebuf_allocate(0); + bp = xfs_buf_allocate(0); if (unlikely(bp == NULL)) goto fail; - _pagebuf_initialize(bp, target, 0, len, 0); + _xfs_buf_initialize(bp, target, 0, len, 0); try_again: data = kmem_alloc(malloc_len, KM_SLEEP | KM_MAYFAIL); @@ -776,78 +773,73 @@ pagebuf_get_no_daddr( /* check whether alignment matches.. */ if ((__psunsigned_t)data != - ((__psunsigned_t)data & ~target->pbr_smask)) { + ((__psunsigned_t)data & ~target->bt_smask)) { /* .. else double the size and try again */ kmem_free(data, malloc_len); malloc_len <<= 1; goto try_again; } - error = pagebuf_associate_memory(bp, data, len); + error = xfs_buf_associate_memory(bp, data, len); if (error) goto fail_free_mem; - bp->pb_flags |= _PBF_KMEM_ALLOC; + bp->b_flags |= _XBF_KMEM_ALLOC; - pagebuf_unlock(bp); + xfs_buf_unlock(bp); - PB_TRACE(bp, "no_daddr", data); + XB_TRACE(bp, "no_daddr", data); return bp; fail_free_mem: kmem_free(data, malloc_len); fail_free_buf: - pagebuf_free(bp); + xfs_buf_free(bp); fail: return NULL; } /* - * pagebuf_hold - * * Increment reference count on buffer, to hold the buffer concurrently * with another thread which may release (free) the buffer asynchronously. - * * Must hold the buffer already to call this function. */ void -pagebuf_hold( - xfs_buf_t *pb) +xfs_buf_hold( + xfs_buf_t *bp) { - atomic_inc(&pb->pb_hold); - PB_TRACE(pb, "hold", 0); + atomic_inc(&bp->b_hold); + XB_TRACE(bp, "hold", 0); } /* - * pagebuf_rele - * - * pagebuf_rele releases a hold on the specified buffer. If the - * the hold count is 1, pagebuf_rele calls pagebuf_free. + * Releases a hold on the specified buffer. If the + * the hold count is 1, calls xfs_buf_free. */ void -pagebuf_rele( - xfs_buf_t *pb) +xfs_buf_rele( + xfs_buf_t *bp) { - xfs_bufhash_t *hash = pb->pb_hash; + xfs_bufhash_t *hash = bp->b_hash; - PB_TRACE(pb, "rele", pb->pb_relse); + XB_TRACE(bp, "rele", bp->b_relse); - if (atomic_dec_and_lock(&pb->pb_hold, &hash->bh_lock)) { - if (pb->pb_relse) { - atomic_inc(&pb->pb_hold); + if (atomic_dec_and_lock(&bp->b_hold, &hash->bh_lock)) { + if (bp->b_relse) { + atomic_inc(&bp->b_hold); spin_unlock(&hash->bh_lock); - (*(pb->pb_relse)) (pb); - } else if (pb->pb_flags & PBF_FS_MANAGED) { + (*(bp->b_relse)) (bp); + } else if (bp->b_flags & XBF_FS_MANAGED) { spin_unlock(&hash->bh_lock); } else { - ASSERT(!(pb->pb_flags & (PBF_DELWRI|_PBF_DELWRI_Q))); - list_del_init(&pb->pb_hash_list); + ASSERT(!(bp->b_flags & (XBF_DELWRI|_XBF_DELWRI_Q))); + list_del_init(&bp->b_hash_list); spin_unlock(&hash->bh_lock); - pagebuf_free(pb); + xfs_buf_free(bp); } } else { /* * Catch reference count leaks */ - ASSERT(atomic_read(&pb->pb_hold) >= 0); + ASSERT(atomic_read(&bp->b_hold) >= 0); } } @@ -863,168 +855,122 @@ pagebuf_rele( */ /* - * pagebuf_cond_lock - * - * pagebuf_cond_lock locks a buffer object, if it is not already locked. - * Note that this in no way - * locks the underlying pages, so it is only useful for synchronizing - * concurrent use of page buffer objects, not for synchronizing independent - * access to the underlying pages. + * Locks a buffer object, if it is not already locked. + * Note that this in no way locks the underlying pages, so it is only + * useful for synchronizing concurrent use of buffer objects, not for + * synchronizing independent access to the underlying pages. */ int -pagebuf_cond_lock( /* lock buffer, if not locked */ - /* returns -EBUSY if locked) */ - xfs_buf_t *pb) +xfs_buf_cond_lock( + xfs_buf_t *bp) { int locked; - locked = down_trylock(&pb->pb_sema) == 0; + locked = down_trylock(&bp->b_sema) == 0; if (locked) { - PB_SET_OWNER(pb); + XB_SET_OWNER(bp); } - PB_TRACE(pb, "cond_lock", (long)locked); - return(locked ? 0 : -EBUSY); + XB_TRACE(bp, "cond_lock", (long)locked); + return locked ? 0 : -EBUSY; } #if defined(DEBUG) || defined(XFS_BLI_TRACE) -/* - * pagebuf_lock_value - * - * Return lock value for a pagebuf - */ int -pagebuf_lock_value( - xfs_buf_t *pb) +xfs_buf_lock_value( + xfs_buf_t *bp) { - return(atomic_read(&pb->pb_sema.count)); + return atomic_read(&bp->b_sema.count); } #endif /* - * pagebuf_lock - * - * pagebuf_lock locks a buffer object. Note that this in no way - * locks the underlying pages, so it is only useful for synchronizing - * concurrent use of page buffer objects, not for synchronizing independent - * access to the underlying pages. + * Locks a buffer object. + * Note that this in no way locks the underlying pages, so it is only + * useful for synchronizing concurrent use of buffer objects, not for + * synchronizing independent access to the underlying pages. */ -int -pagebuf_lock( - xfs_buf_t *pb) +void +xfs_buf_lock( + xfs_buf_t *bp) { - PB_TRACE(pb, "lock", 0); - if (atomic_read(&pb->pb_io_remaining)) - blk_run_address_space(pb->pb_target->pbr_mapping); - down(&pb->pb_sema); - PB_SET_OWNER(pb); - PB_TRACE(pb, "locked", 0); - return 0; + XB_TRACE(bp, "lock", 0); + if (atomic_read(&bp->b_io_remaining)) + blk_run_address_space(bp->b_target->bt_mapping); + down(&bp->b_sema); + XB_SET_OWNER(bp); + XB_TRACE(bp, "locked", 0); } /* - * pagebuf_unlock - * - * pagebuf_unlock releases the lock on the buffer object created by - * pagebuf_lock or pagebuf_cond_lock (not any pinning of underlying pages - * created by pagebuf_pin). - * + * Releases the lock on the buffer object. * If the buffer is marked delwri but is not queued, do so before we - * unlock the buffer as we need to set flags correctly. We also need to + * unlock the buffer as we need to set flags correctly. We also need to * take a reference for the delwri queue because the unlocker is going to * drop their's and they don't know we just queued it. */ void -pagebuf_unlock( /* unlock buffer */ - xfs_buf_t *pb) /* buffer to unlock */ +xfs_buf_unlock( + xfs_buf_t *bp) { - if ((pb->pb_flags & (PBF_DELWRI|_PBF_DELWRI_Q)) == PBF_DELWRI) { - atomic_inc(&pb->pb_hold); - pb->pb_flags |= PBF_ASYNC; - pagebuf_delwri_queue(pb, 0); + if ((bp->b_flags & (XBF_DELWRI|_XBF_DELWRI_Q)) == XBF_DELWRI) { + atomic_inc(&bp->b_hold); + bp->b_flags |= XBF_ASYNC; + xfs_buf_delwri_queue(bp, 0); } - PB_CLEAR_OWNER(pb); - up(&pb->pb_sema); - PB_TRACE(pb, "unlock", 0); + XB_CLEAR_OWNER(bp); + up(&bp->b_sema); + XB_TRACE(bp, "unlock", 0); } /* * Pinning Buffer Storage in Memory - */ - -/* - * pagebuf_pin - * - * pagebuf_pin locks all of the memory represented by a buffer in - * memory. Multiple calls to pagebuf_pin and pagebuf_unpin, for - * the same or different buffers affecting a given page, will - * properly count the number of outstanding "pin" requests. The - * buffer may be released after the pagebuf_pin and a different - * buffer used when calling pagebuf_unpin, if desired. - * pagebuf_pin should be used by the file system when it wants be - * assured that no attempt will be made to force the affected - * memory to disk. It does not assure that a given logical page - * will not be moved to a different physical page. + * Ensure that no attempt to force a buffer to disk will succeed. */ void -pagebuf_pin( - xfs_buf_t *pb) +xfs_buf_pin( + xfs_buf_t *bp) { - atomic_inc(&pb->pb_pin_count); - PB_TRACE(pb, "pin", (long)pb->pb_pin_count.counter); + atomic_inc(&bp->b_pin_count); + XB_TRACE(bp, "pin", (long)bp->b_pin_count.counter); } -/* - * pagebuf_unpin - * - * pagebuf_unpin reverses the locking of memory performed by - * pagebuf_pin. Note that both functions affected the logical - * pages associated with the buffer, not the buffer itself. - */ void -pagebuf_unpin( - xfs_buf_t *pb) +xfs_buf_unpin( + xfs_buf_t *bp) { - if (atomic_dec_and_test(&pb->pb_pin_count)) { - wake_up_all(&pb->pb_waiters); - } - PB_TRACE(pb, "unpin", (long)pb->pb_pin_count.counter); + if (atomic_dec_and_test(&bp->b_pin_count)) + wake_up_all(&bp->b_waiters); + XB_TRACE(bp, "unpin", (long)bp->b_pin_count.counter); } int -pagebuf_ispin( - xfs_buf_t *pb) +xfs_buf_ispin( + xfs_buf_t *bp) { - return atomic_read(&pb->pb_pin_count); + return atomic_read(&bp->b_pin_count); } -/* - * pagebuf_wait_unpin - * - * pagebuf_wait_unpin waits until all of the memory associated - * with the buffer is not longer locked in memory. It returns - * immediately if none of the affected pages are locked. - */ -static inline void -_pagebuf_wait_unpin( - xfs_buf_t *pb) +STATIC void +xfs_buf_wait_unpin( + xfs_buf_t *bp) { DECLARE_WAITQUEUE (wait, current); - if (atomic_read(&pb->pb_pin_count) == 0) + if (atomic_read(&bp->b_pin_count) == 0) return; - add_wait_queue(&pb->pb_waiters, &wait); + add_wait_queue(&bp->b_waiters, &wait); for (;;) { set_current_state(TASK_UNINTERRUPTIBLE); - if (atomic_read(&pb->pb_pin_count) == 0) + if (atomic_read(&bp->b_pin_count) == 0) break; - if (atomic_read(&pb->pb_io_remaining)) - blk_run_address_space(pb->pb_target->pbr_mapping); + if (atomic_read(&bp->b_io_remaining)) + blk_run_address_space(bp->b_target->bt_mapping); schedule(); } - remove_wait_queue(&pb->pb_waiters, &wait); + remove_wait_queue(&bp->b_waiters, &wait); set_current_state(TASK_RUNNING); } @@ -1032,241 +978,216 @@ _pagebuf_wait_unpin( * Buffer Utility Routines */ -/* - * pagebuf_iodone - * - * pagebuf_iodone marks a buffer for which I/O is in progress - * done with respect to that I/O. The pb_iodone routine, if - * present, will be called as a side-effect. - */ STATIC void -pagebuf_iodone_work( +xfs_buf_iodone_work( void *v) { xfs_buf_t *bp = (xfs_buf_t *)v; - if (bp->pb_iodone) - (*(bp->pb_iodone))(bp); - else if (bp->pb_flags & PBF_ASYNC) + if (bp->b_iodone) + (*(bp->b_iodone))(bp); + else if (bp->b_flags & XBF_ASYNC) xfs_buf_relse(bp); } void -pagebuf_iodone( - xfs_buf_t *pb, +xfs_buf_ioend( + xfs_buf_t *bp, int schedule) { - pb->pb_flags &= ~(PBF_READ | PBF_WRITE); - if (pb->pb_error == 0) - pb->pb_flags |= PBF_DONE; + bp->b_flags &= ~(XBF_READ | XBF_WRITE); + if (bp->b_error == 0) + bp->b_flags |= XBF_DONE; - PB_TRACE(pb, "iodone", pb->pb_iodone); + XB_TRACE(bp, "iodone", bp->b_iodone); - if ((pb->pb_iodone) || (pb->pb_flags & PBF_ASYNC)) { + if ((bp->b_iodone) || (bp->b_flags & XBF_ASYNC)) { if (schedule) { - INIT_WORK(&pb->pb_iodone_work, pagebuf_iodone_work, pb); - queue_work(xfslogd_workqueue, &pb->pb_iodone_work); + INIT_WORK(&bp->b_iodone_work, xfs_buf_iodone_work, bp); + queue_work(xfslogd_workqueue, &bp->b_iodone_work); } else { - pagebuf_iodone_work(pb); + xfs_buf_iodone_work(bp); } } else { - up(&pb->pb_iodonesema); + up(&bp->b_iodonesema); } } -/* - * pagebuf_ioerror - * - * pagebuf_ioerror sets the error code for a buffer. - */ void -pagebuf_ioerror( /* mark/clear buffer error flag */ - xfs_buf_t *pb, /* buffer to mark */ - int error) /* error to store (0 if none) */ +xfs_buf_ioerror( + xfs_buf_t *bp, + int error) { ASSERT(error >= 0 && error <= 0xffff); - pb->pb_error = (unsigned short)error; - PB_TRACE(pb, "ioerror", (unsigned long)error); + bp->b_error = (unsigned short)error; + XB_TRACE(bp, "ioerror", (unsigned long)error); } /* - * pagebuf_iostart - * - * pagebuf_iostart initiates I/O on a buffer, based on the flags supplied. - * If necessary, it will arrange for any disk space allocation required, - * and it will break up the request if the block mappings require it. - * The pb_iodone routine in the buffer supplied will only be called + * Initiate I/O on a buffer, based on the flags supplied. + * The b_iodone routine in the buffer supplied will only be called * when all of the subsidiary I/O requests, if any, have been completed. - * pagebuf_iostart calls the pagebuf_ioinitiate routine or - * pagebuf_iorequest, if the former routine is not defined, to start - * the I/O on a given low-level request. */ int -pagebuf_iostart( /* start I/O on a buffer */ - xfs_buf_t *pb, /* buffer to start */ - page_buf_flags_t flags) /* PBF_LOCK, PBF_ASYNC, PBF_READ, */ - /* PBF_WRITE, PBF_DELWRI, */ - /* PBF_DONT_BLOCK */ +xfs_buf_iostart( + xfs_buf_t *bp, + xfs_buf_flags_t flags) { int status = 0; - PB_TRACE(pb, "iostart", (unsigned long)flags); + XB_TRACE(bp, "iostart", (unsigned long)flags); - if (flags & PBF_DELWRI) { - pb->pb_flags &= ~(PBF_READ | PBF_WRITE | PBF_ASYNC); - pb->pb_flags |= flags & (PBF_DELWRI | PBF_ASYNC); - pagebuf_delwri_queue(pb, 1); + if (flags & XBF_DELWRI) { + bp->b_flags &= ~(XBF_READ | XBF_WRITE | XBF_ASYNC); + bp->b_flags |= flags & (XBF_DELWRI | XBF_ASYNC); + xfs_buf_delwri_queue(bp, 1); return status; } - pb->pb_flags &= ~(PBF_READ | PBF_WRITE | PBF_ASYNC | PBF_DELWRI | \ - PBF_READ_AHEAD | _PBF_RUN_QUEUES); - pb->pb_flags |= flags & (PBF_READ | PBF_WRITE | PBF_ASYNC | \ - PBF_READ_AHEAD | _PBF_RUN_QUEUES); + bp->b_flags &= ~(XBF_READ | XBF_WRITE | XBF_ASYNC | XBF_DELWRI | \ + XBF_READ_AHEAD | _XBF_RUN_QUEUES); + bp->b_flags |= flags & (XBF_READ | XBF_WRITE | XBF_ASYNC | \ + XBF_READ_AHEAD | _XBF_RUN_QUEUES); - BUG_ON(pb->pb_bn == XFS_BUF_DADDR_NULL); + BUG_ON(bp->b_bn == XFS_BUF_DADDR_NULL); /* For writes allow an alternate strategy routine to precede * the actual I/O request (which may not be issued at all in * a shutdown situation, for example). */ - status = (flags & PBF_WRITE) ? - pagebuf_iostrategy(pb) : pagebuf_iorequest(pb); + status = (flags & XBF_WRITE) ? + xfs_buf_iostrategy(bp) : xfs_buf_iorequest(bp); /* Wait for I/O if we are not an async request. * Note: async I/O request completion will release the buffer, * and that can already be done by this point. So using the * buffer pointer from here on, after async I/O, is invalid. */ - if (!status && !(flags & PBF_ASYNC)) - status = pagebuf_iowait(pb); + if (!status && !(flags & XBF_ASYNC)) + status = xfs_buf_iowait(bp); return status; } -/* - * Helper routine for pagebuf_iorequest - */ - STATIC __inline__ int -_pagebuf_iolocked( - xfs_buf_t *pb) +_xfs_buf_iolocked( + xfs_buf_t *bp) { - ASSERT(pb->pb_flags & (PBF_READ|PBF_WRITE)); - if (pb->pb_flags & PBF_READ) - return pb->pb_locked; + ASSERT(bp->b_flags & (XBF_READ | XBF_WRITE)); + if (bp->b_flags & XBF_READ) + return bp->b_locked; return 0; } STATIC __inline__ void -_pagebuf_iodone( - xfs_buf_t *pb, +_xfs_buf_ioend( + xfs_buf_t *bp, int schedule) { - if (atomic_dec_and_test(&pb->pb_io_remaining) == 1) { - pb->pb_locked = 0; - pagebuf_iodone(pb, schedule); + if (atomic_dec_and_test(&bp->b_io_remaining) == 1) { + bp->b_locked = 0; + xfs_buf_ioend(bp, schedule); } } STATIC int -bio_end_io_pagebuf( +xfs_buf_bio_end_io( struct bio *bio, unsigned int bytes_done, int error) { - xfs_buf_t *pb = (xfs_buf_t *)bio->bi_private; - unsigned int blocksize = pb->pb_target->pbr_bsize; + xfs_buf_t *bp = (xfs_buf_t *)bio->bi_private; + unsigned int blocksize = bp->b_target->bt_bsize; struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1; if (bio->bi_size) return 1; if (!test_bit(BIO_UPTODATE, &bio->bi_flags)) - pb->pb_error = EIO; + bp->b_error = EIO; do { struct page *page = bvec->bv_page; - if (unlikely(pb->pb_error)) { - if (pb->pb_flags & PBF_READ) + if (unlikely(bp->b_error)) { + if (bp->b_flags & XBF_READ) ClearPageUptodate(page); SetPageError(page); - } else if (blocksize == PAGE_CACHE_SIZE) { + } else if (blocksize >= PAGE_CACHE_SIZE) { SetPageUptodate(page); } else if (!PagePrivate(page) && - (pb->pb_flags & _PBF_PAGE_CACHE)) { + (bp->b_flags & _XBF_PAGE_CACHE)) { set_page_region(page, bvec->bv_offset, bvec->bv_len); } if (--bvec >= bio->bi_io_vec) prefetchw(&bvec->bv_page->flags); - if (_pagebuf_iolocked(pb)) { + if (_xfs_buf_iolocked(bp)) { unlock_page(page); } } while (bvec >= bio->bi_io_vec); - _pagebuf_iodone(pb, 1); + _xfs_buf_ioend(bp, 1); bio_put(bio); return 0; } STATIC void -_pagebuf_ioapply( - xfs_buf_t *pb) +_xfs_buf_ioapply( + xfs_buf_t *bp) { int i, rw, map_i, total_nr_pages, nr_pages; struct bio *bio; - int offset = pb->pb_offset; - int size = pb->pb_count_desired; - sector_t sector = pb->pb_bn; - unsigned int blocksize = pb->pb_target->pbr_bsize; - int locking = _pagebuf_iolocked(pb); + int offset = bp->b_offset; + int size = bp->b_count_desired; + sector_t sector = bp->b_bn; + unsigned int blocksize = bp->b_target->bt_bsize; + int locking = _xfs_buf_iolocked(bp); - total_nr_pages = pb->pb_page_count; + total_nr_pages = bp->b_page_count; map_i = 0; - if (pb->pb_flags & _PBF_RUN_QUEUES) { - pb->pb_flags &= ~_PBF_RUN_QUEUES; - rw = (pb->pb_flags & PBF_READ) ? READ_SYNC : WRITE_SYNC; + if (bp->b_flags & _XBF_RUN_QUEUES) { + bp->b_flags &= ~_XBF_RUN_QUEUES; + rw = (bp->b_flags & XBF_READ) ? READ_SYNC : WRITE_SYNC; } else { - rw = (pb->pb_flags & PBF_READ) ? READ : WRITE; + rw = (bp->b_flags & XBF_READ) ? READ : WRITE; } - if (pb->pb_flags & PBF_ORDERED) { - ASSERT(!(pb->pb_flags & PBF_READ)); + if (bp->b_flags & XBF_ORDERED) { + ASSERT(!(bp->b_flags & XBF_READ)); rw = WRITE_BARRIER; } - /* Special code path for reading a sub page size pagebuf in -- + /* Special code path for reading a sub page size buffer in -- * we populate up the whole page, and hence the other metadata * in the same page. This optimization is only valid when the - * filesystem block size and the page size are equal. + * filesystem block size is not smaller than the page size. */ - if ((pb->pb_buffer_length < PAGE_CACHE_SIZE) && - (pb->pb_flags & PBF_READ) && locking && - (blocksize == PAGE_CACHE_SIZE)) { + if ((bp->b_buffer_length < PAGE_CACHE_SIZE) && + (bp->b_flags & XBF_READ) && locking && + (blocksize >= PAGE_CACHE_SIZE)) { bio = bio_alloc(GFP_NOIO, 1); - bio->bi_bdev = pb->pb_target->pbr_bdev; + bio->bi_bdev = bp->b_target->bt_bdev; bio->bi_sector = sector - (offset >> BBSHIFT); - bio->bi_end_io = bio_end_io_pagebuf; - bio->bi_private = pb; + bio->bi_end_io = xfs_buf_bio_end_io; + bio->bi_private = bp; - bio_add_page(bio, pb->pb_pages[0], PAGE_CACHE_SIZE, 0); + bio_add_page(bio, bp->b_pages[0], PAGE_CACHE_SIZE, 0); size = 0; - atomic_inc(&pb->pb_io_remaining); + atomic_inc(&bp->b_io_remaining); goto submit_io; } /* Lock down the pages which we need to for the request */ - if (locking && (pb->pb_flags & PBF_WRITE) && (pb->pb_locked == 0)) { + if (locking && (bp->b_flags & XBF_WRITE) && (bp->b_locked == 0)) { for (i = 0; size; i++) { int nbytes = PAGE_CACHE_SIZE - offset; - struct page *page = pb->pb_pages[i]; + struct page *page = bp->b_pages[i]; if (nbytes > size) nbytes = size; @@ -1276,30 +1197,30 @@ _pagebuf_ioapply( size -= nbytes; offset = 0; } - offset = pb->pb_offset; - size = pb->pb_count_desired; + offset = bp->b_offset; + size = bp->b_count_desired; } next_chunk: - atomic_inc(&pb->pb_io_remaining); + atomic_inc(&bp->b_io_remaining); nr_pages = BIO_MAX_SECTORS >> (PAGE_SHIFT - BBSHIFT); if (nr_pages > total_nr_pages) nr_pages = total_nr_pages; bio = bio_alloc(GFP_NOIO, nr_pages); - bio->bi_bdev = pb->pb_target->pbr_bdev; + bio->bi_bdev = bp->b_target->bt_bdev; bio->bi_sector = sector; - bio->bi_end_io = bio_end_io_pagebuf; - bio->bi_private = pb; + bio->bi_end_io = xfs_buf_bio_end_io; + bio->bi_private = bp; for (; size && nr_pages; nr_pages--, map_i++) { - int nbytes = PAGE_CACHE_SIZE - offset; + int rbytes, nbytes = PAGE_CACHE_SIZE - offset; if (nbytes > size) nbytes = size; - if (bio_add_page(bio, pb->pb_pages[map_i], - nbytes, offset) < nbytes) + rbytes = bio_add_page(bio, bp->b_pages[map_i], nbytes, offset); + if (rbytes < nbytes) break; offset = 0; @@ -1315,107 +1236,102 @@ submit_io: goto next_chunk; } else { bio_put(bio); - pagebuf_ioerror(pb, EIO); + xfs_buf_ioerror(bp, EIO); } } -/* - * pagebuf_iorequest -- the core I/O request routine. - */ int -pagebuf_iorequest( /* start real I/O */ - xfs_buf_t *pb) /* buffer to convey to device */ +xfs_buf_iorequest( + xfs_buf_t *bp) { - PB_TRACE(pb, "iorequest", 0); + XB_TRACE(bp, "iorequest", 0); - if (pb->pb_flags & PBF_DELWRI) { - pagebuf_delwri_queue(pb, 1); + if (bp->b_flags & XBF_DELWRI) { + xfs_buf_delwri_queue(bp, 1); return 0; } - if (pb->pb_flags & PBF_WRITE) { - _pagebuf_wait_unpin(pb); + if (bp->b_flags & XBF_WRITE) { + xfs_buf_wait_unpin(bp); } - pagebuf_hold(pb); + xfs_buf_hold(bp); /* Set the count to 1 initially, this will stop an I/O * completion callout which happens before we have started - * all the I/O from calling pagebuf_iodone too early. + * all the I/O from calling xfs_buf_ioend too early. */ - atomic_set(&pb->pb_io_remaining, 1); - _pagebuf_ioapply(pb); - _pagebuf_iodone(pb, 0); + atomic_set(&bp->b_io_remaining, 1); + _xfs_buf_ioapply(bp); + _xfs_buf_ioend(bp, 0); - pagebuf_rele(pb); + xfs_buf_rele(bp); return 0; } /* - * pagebuf_iowait - * - * pagebuf_iowait waits for I/O to complete on the buffer supplied. - * It returns immediately if no I/O is pending. In any case, it returns - * the error code, if any, or 0 if there is no error. + * Waits for I/O to complete on the buffer supplied. + * It returns immediately if no I/O is pending. + * It returns the I/O error code, if any, or 0 if there was no error. */ int -pagebuf_iowait( - xfs_buf_t *pb) +xfs_buf_iowait( + xfs_buf_t *bp) { - PB_TRACE(pb, "iowait", 0); - if (atomic_read(&pb->pb_io_remaining)) - blk_run_address_space(pb->pb_target->pbr_mapping); - down(&pb->pb_iodonesema); - PB_TRACE(pb, "iowaited", (long)pb->pb_error); - return pb->pb_error; + XB_TRACE(bp, "iowait", 0); + if (atomic_read(&bp->b_io_remaining)) + blk_run_address_space(bp->b_target->bt_mapping); + down(&bp->b_iodonesema); + XB_TRACE(bp, "iowaited", (long)bp->b_error); + return bp->b_error; } -caddr_t -pagebuf_offset( - xfs_buf_t *pb, +xfs_caddr_t +xfs_buf_offset( + xfs_buf_t *bp, size_t offset) { struct page *page; - offset += pb->pb_offset; + if (bp->b_flags & XBF_MAPPED) + return XFS_BUF_PTR(bp) + offset; - page = pb->pb_pages[offset >> PAGE_CACHE_SHIFT]; - return (caddr_t) page_address(page) + (offset & (PAGE_CACHE_SIZE - 1)); + offset += bp->b_offset; + page = bp->b_pages[offset >> PAGE_CACHE_SHIFT]; + return (xfs_caddr_t)page_address(page) + (offset & (PAGE_CACHE_SIZE-1)); } /* - * pagebuf_iomove - * * Move data into or out of a buffer. */ void -pagebuf_iomove( - xfs_buf_t *pb, /* buffer to process */ +xfs_buf_iomove( + xfs_buf_t *bp, /* buffer to process */ size_t boff, /* starting buffer offset */ size_t bsize, /* length to copy */ caddr_t data, /* data address */ - page_buf_rw_t mode) /* read/write flag */ + xfs_buf_rw_t mode) /* read/write/zero flag */ { size_t bend, cpoff, csize; struct page *page; bend = boff + bsize; while (boff < bend) { - page = pb->pb_pages[page_buf_btoct(boff + pb->pb_offset)]; - cpoff = page_buf_poff(boff + pb->pb_offset); + page = bp->b_pages[xfs_buf_btoct(boff + bp->b_offset)]; + cpoff = xfs_buf_poff(boff + bp->b_offset); csize = min_t(size_t, - PAGE_CACHE_SIZE-cpoff, pb->pb_count_desired-boff); + PAGE_CACHE_SIZE-cpoff, bp->b_count_desired-boff); ASSERT(((csize + cpoff) <= PAGE_CACHE_SIZE)); switch (mode) { - case PBRW_ZERO: + case XBRW_ZERO: memset(page_address(page) + cpoff, 0, csize); break; - case PBRW_READ: + case XBRW_READ: memcpy(data, page_address(page) + cpoff, csize); break; - case PBRW_WRITE: + case XBRW_WRITE: memcpy(page_address(page) + cpoff, data, csize); } @@ -1425,12 +1341,12 @@ pagebuf_iomove( } /* - * Handling of buftargs. + * Handling of buffer targets (buftargs). */ /* - * Wait for any bufs with callbacks that have been submitted but - * have not yet returned... walk the hash list for the target. + * Wait for any bufs with callbacks that have been submitted but + * have not yet returned... walk the hash list for the target. */ void xfs_wait_buftarg( @@ -1444,15 +1360,15 @@ xfs_wait_buftarg( hash = &btp->bt_hash[i]; again: spin_lock(&hash->bh_lock); - list_for_each_entry_safe(bp, n, &hash->bh_list, pb_hash_list) { - ASSERT(btp == bp->pb_target); - if (!(bp->pb_flags & PBF_FS_MANAGED)) { + list_for_each_entry_safe(bp, n, &hash->bh_list, b_hash_list) { + ASSERT(btp == bp->b_target); + if (!(bp->b_flags & XBF_FS_MANAGED)) { spin_unlock(&hash->bh_lock); /* * Catch superblock reference count leaks * immediately */ - BUG_ON(bp->pb_bn == 0); + BUG_ON(bp->b_bn == 0); delay(100); goto again; } @@ -1462,9 +1378,9 @@ again: } /* - * Allocate buffer hash table for a given target. - * For devices containing metadata (i.e. not the log/realtime devices) - * we need to allocate a much larger hash table. + * Allocate buffer hash table for a given target. + * For devices containing metadata (i.e. not the log/realtime devices) + * we need to allocate a much larger hash table. */ STATIC void xfs_alloc_bufhash( @@ -1487,11 +1403,34 @@ STATIC void xfs_free_bufhash( xfs_buftarg_t *btp) { - kmem_free(btp->bt_hash, - (1 << btp->bt_hashshift) * sizeof(xfs_bufhash_t)); + kmem_free(btp->bt_hash, (1<<btp->bt_hashshift) * sizeof(xfs_bufhash_t)); btp->bt_hash = NULL; } +/* + * buftarg list for delwrite queue processing + */ +STATIC LIST_HEAD(xfs_buftarg_list); +STATIC DEFINE_SPINLOCK(xfs_buftarg_lock); + +STATIC void +xfs_register_buftarg( + xfs_buftarg_t *btp) +{ + spin_lock(&xfs_buftarg_lock); + list_add(&btp->bt_list, &xfs_buftarg_list); + spin_unlock(&xfs_buftarg_lock); +} + +STATIC void +xfs_unregister_buftarg( + xfs_buftarg_t *btp) +{ + spin_lock(&xfs_buftarg_lock); + list_del(&btp->bt_list); + spin_unlock(&xfs_buftarg_lock); +} + void xfs_free_buftarg( xfs_buftarg_t *btp, @@ -1499,9 +1438,16 @@ xfs_free_buftarg( { xfs_flush_buftarg(btp, 1); if (external) - xfs_blkdev_put(btp->pbr_bdev); + xfs_blkdev_put(btp->bt_bdev); xfs_free_bufhash(btp); - iput(btp->pbr_mapping->host); + iput(btp->bt_mapping->host); + + /* Unregister the buftarg first so that we don't get a + * wakeup finding a non-existent task + */ + xfs_unregister_buftarg(btp); + kthread_stop(btp->bt_task); + kmem_free(btp, sizeof(*btp)); } @@ -1512,11 +1458,11 @@ xfs_setsize_buftarg_flags( unsigned int sectorsize, int verbose) { - btp->pbr_bsize = blocksize; - btp->pbr_sshift = ffs(sectorsize) - 1; - btp->pbr_smask = sectorsize - 1; + btp->bt_bsize = blocksize; + btp->bt_sshift = ffs(sectorsize) - 1; + btp->bt_smask = sectorsize - 1; - if (set_blocksize(btp->pbr_bdev, sectorsize)) { + if (set_blocksize(btp->bt_bdev, sectorsize)) { printk(KERN_WARNING "XFS: Cannot set_blocksize to %u on device %s\n", sectorsize, XFS_BUFTARG_NAME(btp)); @@ -1536,10 +1482,10 @@ xfs_setsize_buftarg_flags( } /* -* When allocating the initial buffer target we have not yet -* read in the superblock, so don't know what sized sectors -* are being used is at this early stage. Play safe. -*/ + * When allocating the initial buffer target we have not yet + * read in the superblock, so don't know what sized sectors + * are being used is at this early stage. Play safe. + */ STATIC int xfs_setsize_buftarg_early( xfs_buftarg_t *btp, @@ -1587,10 +1533,30 @@ xfs_mapping_buftarg( mapping->a_ops = &mapping_aops; mapping->backing_dev_info = bdi; mapping_set_gfp_mask(mapping, GFP_NOFS); - btp->pbr_mapping = mapping; + btp->bt_mapping = mapping; return 0; } +STATIC int +xfs_alloc_delwrite_queue( + xfs_buftarg_t *btp) +{ + int error = 0; + + INIT_LIST_HEAD(&btp->bt_list); + INIT_LIST_HEAD(&btp->bt_delwrite_queue); + spinlock_init(&btp->bt_delwrite_lock, "delwri_lock"); + btp->bt_flags = 0; + btp->bt_task = kthread_run(xfsbufd, btp, "xfsbufd"); + if (IS_ERR(btp->bt_task)) { + error = PTR_ERR(btp->bt_task); + goto out_error; + } + xfs_register_buftarg(btp); +out_error: + return error; +} + xfs_buftarg_t * xfs_alloc_buftarg( struct block_device *bdev, @@ -1600,12 +1566,14 @@ xfs_alloc_buftarg( btp = kmem_zalloc(sizeof(*btp), KM_SLEEP); - btp->pbr_dev = bdev->bd_dev; - btp->pbr_bdev = bdev; + btp->bt_dev = bdev->bd_dev; + btp->bt_bdev = bdev; if (xfs_setsize_buftarg_early(btp, bdev)) goto error; if (xfs_mapping_buftarg(btp, bdev)) goto error; + if (xfs_alloc_delwrite_queue(btp)) + goto error; xfs_alloc_bufhash(btp, external); return btp; @@ -1616,83 +1584,81 @@ error: /* - * Pagebuf delayed write buffer handling + * Delayed write buffer handling */ - -STATIC LIST_HEAD(pbd_delwrite_queue); -STATIC DEFINE_SPINLOCK(pbd_delwrite_lock); - STATIC void -pagebuf_delwri_queue( - xfs_buf_t *pb, +xfs_buf_delwri_queue( + xfs_buf_t *bp, int unlock) { - PB_TRACE(pb, "delwri_q", (long)unlock); - ASSERT((pb->pb_flags & (PBF_DELWRI|PBF_ASYNC)) == - (PBF_DELWRI|PBF_ASYNC)); + struct list_head *dwq = &bp->b_target->bt_delwrite_queue; + spinlock_t *dwlk = &bp->b_target->bt_delwrite_lock; + + XB_TRACE(bp, "delwri_q", (long)unlock); + ASSERT((bp->b_flags&(XBF_DELWRI|XBF_ASYNC)) == (XBF_DELWRI|XBF_ASYNC)); - spin_lock(&pbd_delwrite_lock); + spin_lock(dwlk); /* If already in the queue, dequeue and place at tail */ - if (!list_empty(&pb->pb_list)) { - ASSERT(pb->pb_flags & _PBF_DELWRI_Q); - if (unlock) { - atomic_dec(&pb->pb_hold); - } - list_del(&pb->pb_list); + if (!list_empty(&bp->b_list)) { + ASSERT(bp->b_flags & _XBF_DELWRI_Q); + if (unlock) + atomic_dec(&bp->b_hold); + list_del(&bp->b_list); } - pb->pb_flags |= _PBF_DELWRI_Q; - list_add_tail(&pb->pb_list, &pbd_delwrite_queue); - pb->pb_queuetime = jiffies; - spin_unlock(&pbd_delwrite_lock); + bp->b_flags |= _XBF_DELWRI_Q; + list_add_tail(&bp->b_list, dwq); + bp->b_queuetime = jiffies; + spin_unlock(dwlk); if (unlock) - pagebuf_unlock(pb); + xfs_buf_unlock(bp); } void -pagebuf_delwri_dequeue( - xfs_buf_t *pb) +xfs_buf_delwri_dequeue( + xfs_buf_t *bp) { + spinlock_t *dwlk = &bp->b_target->bt_delwrite_lock; int dequeued = 0; - spin_lock(&pbd_delwrite_lock); - if ((pb->pb_flags & PBF_DELWRI) && !list_empty(&pb->pb_list)) { - ASSERT(pb->pb_flags & _PBF_DELWRI_Q); - list_del_init(&pb->pb_list); + spin_lock(dwlk); + if ((bp->b_flags & XBF_DELWRI) && !list_empty(&bp->b_list)) { + ASSERT(bp->b_flags & _XBF_DELWRI_Q); + list_del_init(&bp->b_list); dequeued = 1; } - pb->pb_flags &= ~(PBF_DELWRI|_PBF_DELWRI_Q); - spin_unlock(&pbd_delwrite_lock); + bp->b_flags &= ~(XBF_DELWRI|_XBF_DELWRI_Q); + spin_unlock(dwlk); if (dequeued) - pagebuf_rele(pb); + xfs_buf_rele(bp); - PB_TRACE(pb, "delwri_dq", (long)dequeued); + XB_TRACE(bp, "delwri_dq", (long)dequeued); } STATIC void -pagebuf_runall_queues( +xfs_buf_runall_queues( struct workqueue_struct *queue) { flush_workqueue(queue); } -/* Defines for pagebuf daemon */ -STATIC struct task_struct *xfsbufd_task; -STATIC int xfsbufd_force_flush; -STATIC int xfsbufd_force_sleep; - STATIC int xfsbufd_wakeup( int priority, gfp_t mask) { - if (xfsbufd_force_sleep) - return 0; - xfsbufd_force_flush = 1; - barrier(); - wake_up_process(xfsbufd_task); + xfs_buftarg_t *btp; + + spin_lock(&xfs_buftarg_lock); + list_for_each_entry(btp, &xfs_buftarg_list, bt_list) { + if (test_bit(XBT_FORCE_SLEEP, &btp->bt_flags)) + continue; + set_bit(XBT_FORCE_FLUSH, &btp->bt_flags); + wake_up_process(btp->bt_task); + } + spin_unlock(&xfs_buftarg_lock); return 0; } @@ -1702,67 +1668,70 @@ xfsbufd( { struct list_head tmp; unsigned long age; - xfs_buftarg_t *target; - xfs_buf_t *pb, *n; + xfs_buftarg_t *target = (xfs_buftarg_t *)data; + xfs_buf_t *bp, *n; + struct list_head *dwq = &target->bt_delwrite_queue; + spinlock_t *dwlk = &target->bt_delwrite_lock; current->flags |= PF_MEMALLOC; INIT_LIST_HEAD(&tmp); do { if (unlikely(freezing(current))) { - xfsbufd_force_sleep = 1; + set_bit(XBT_FORCE_SLEEP, &target->bt_flags); refrigerator(); } else { - xfsbufd_force_sleep = 0; + clear_bit(XBT_FORCE_SLEEP, &target->bt_flags); } schedule_timeout_interruptible( xfs_buf_timer_centisecs * msecs_to_jiffies(10)); age = xfs_buf_age_centisecs * msecs_to_jiffies(10); - spin_lock(&pbd_delwrite_lock); - list_for_each_entry_safe(pb, n, &pbd_delwrite_queue, pb_list) { - PB_TRACE(pb, "walkq1", (long)pagebuf_ispin(pb)); - ASSERT(pb->pb_flags & PBF_DELWRI); - - if (!pagebuf_ispin(pb) && !pagebuf_cond_lock(pb)) { - if (!xfsbufd_force_flush && + spin_lock(dwlk); + list_for_each_entry_safe(bp, n, dwq, b_list) { + XB_TRACE(bp, "walkq1", (long)xfs_buf_ispin(bp)); + ASSERT(bp->b_flags & XBF_DELWRI); + + if (!xfs_buf_ispin(bp) && !xfs_buf_cond_lock(bp)) { + if (!test_bit(XBT_FORCE_FLUSH, + &target->bt_flags) && time_before(jiffies, - pb->pb_queuetime + age)) { - pagebuf_unlock(pb); + bp->b_queuetime + age)) { + xfs_buf_unlock(bp); break; } - pb->pb_flags &= ~(PBF_DELWRI|_PBF_DELWRI_Q); - pb->pb_flags |= PBF_WRITE; - list_move(&pb->pb_list, &tmp); + bp->b_flags &= ~(XBF_DELWRI|_XBF_DELWRI_Q); + bp->b_flags |= XBF_WRITE; + list_move(&bp->b_list, &tmp); } } - spin_unlock(&pbd_delwrite_lock); + spin_unlock(dwlk); while (!list_empty(&tmp)) { - pb = list_entry(tmp.next, xfs_buf_t, pb_list); - target = pb->pb_target; + bp = list_entry(tmp.next, xfs_buf_t, b_list); + ASSERT(target == bp->b_target); - list_del_init(&pb->pb_list); - pagebuf_iostrategy(pb); + list_del_init(&bp->b_list); + xfs_buf_iostrategy(bp); - blk_run_address_space(target->pbr_mapping); + blk_run_address_space(target->bt_mapping); } if (as_list_len > 0) purge_addresses(); - xfsbufd_force_flush = 0; + clear_bit(XBT_FORCE_FLUSH, &target->bt_flags); } while (!kthread_should_stop()); return 0; } /* - * Go through all incore buffers, and release buffers if they belong to - * the given device. This is used in filesystem error handling to - * preserve the consistency of its metadata. + * Go through all incore buffers, and release buffers if they belong to + * the given device. This is used in filesystem error handling to + * preserve the consistency of its metadata. */ int xfs_flush_buftarg( @@ -1770,73 +1739,72 @@ xfs_flush_buftarg( int wait) { struct list_head tmp; - xfs_buf_t *pb, *n; + xfs_buf_t *bp, *n; int pincount = 0; + struct list_head *dwq = &target->bt_delwrite_queue; + spinlock_t *dwlk = &target->bt_delwrite_lock; - pagebuf_runall_queues(xfsdatad_workqueue); - pagebuf_runall_queues(xfslogd_workqueue); + xfs_buf_runall_queues(xfsdatad_workqueue); + xfs_buf_runall_queues(xfslogd_workqueue); INIT_LIST_HEAD(&tmp); - spin_lock(&pbd_delwrite_lock); - list_for_each_entry_safe(pb, n, &pbd_delwrite_queue, pb_list) { - - if (pb->pb_target != target) - continue; - - ASSERT(pb->pb_flags & (PBF_DELWRI|_PBF_DELWRI_Q)); - PB_TRACE(pb, "walkq2", (long)pagebuf_ispin(pb)); - if (pagebuf_ispin(pb)) { + spin_lock(dwlk); + list_for_each_entry_safe(bp, n, dwq, b_list) { + ASSERT(bp->b_target == target); + ASSERT(bp->b_flags & (XBF_DELWRI | _XBF_DELWRI_Q)); + XB_TRACE(bp, "walkq2", (long)xfs_buf_ispin(bp)); + if (xfs_buf_ispin(bp)) { pincount++; continue; } - list_move(&pb->pb_list, &tmp); + list_move(&bp->b_list, &tmp); } - spin_unlock(&pbd_delwrite_lock); + spin_unlock(dwlk); /* * Dropped the delayed write list lock, now walk the temporary list */ - list_for_each_entry_safe(pb, n, &tmp, pb_list) { - pagebuf_lock(pb); - pb->pb_flags &= ~(PBF_DELWRI|_PBF_DELWRI_Q); - pb->pb_flags |= PBF_WRITE; + list_for_each_entry_safe(bp, n, &tmp, b_list) { + xfs_buf_lock(bp); + bp->b_flags &= ~(XBF_DELWRI|_XBF_DELWRI_Q); + bp->b_flags |= XBF_WRITE; if (wait) - pb->pb_flags &= ~PBF_ASYNC; + bp->b_flags &= ~XBF_ASYNC; else - list_del_init(&pb->pb_list); + list_del_init(&bp->b_list); - pagebuf_iostrategy(pb); + xfs_buf_iostrategy(bp); } /* * Remaining list items must be flushed before returning */ while (!list_empty(&tmp)) { - pb = list_entry(tmp.next, xfs_buf_t, pb_list); + bp = list_entry(tmp.next, xfs_buf_t, b_list); - list_del_init(&pb->pb_list); - xfs_iowait(pb); - xfs_buf_relse(pb); + list_del_init(&bp->b_list); + xfs_iowait(bp); + xfs_buf_relse(bp); } if (wait) - blk_run_address_space(target->pbr_mapping); + blk_run_address_space(target->bt_mapping); return pincount; } int __init -pagebuf_init(void) +xfs_buf_init(void) { int error = -ENOMEM; -#ifdef PAGEBUF_TRACE - pagebuf_trace_buf = ktrace_alloc(PAGEBUF_TRACE_SIZE, KM_SLEEP); +#ifdef XFS_BUF_TRACE + xfs_buf_trace_buf = ktrace_alloc(XFS_BUF_TRACE_SIZE, KM_SLEEP); #endif - pagebuf_zone = kmem_zone_init(sizeof(xfs_buf_t), "xfs_buf"); - if (!pagebuf_zone) + xfs_buf_zone = kmem_zone_init(sizeof(xfs_buf_t), "xfs_buf"); + if (!xfs_buf_zone) goto out_free_trace_buf; xfslogd_workqueue = create_workqueue("xfslogd"); @@ -1847,42 +1815,33 @@ pagebuf_init(void) if (!xfsdatad_workqueue) goto out_destroy_xfslogd_workqueue; - xfsbufd_task = kthread_run(xfsbufd, NULL, "xfsbufd"); - if (IS_ERR(xfsbufd_task)) { - error = PTR_ERR(xfsbufd_task); + xfs_buf_shake = kmem_shake_register(xfsbufd_wakeup); + if (!xfs_buf_shake) goto out_destroy_xfsdatad_workqueue; - } - - pagebuf_shake = kmem_shake_register(xfsbufd_wakeup); - if (!pagebuf_shake) - goto out_stop_xfsbufd; return 0; - out_stop_xfsbufd: - kthread_stop(xfsbufd_task); out_destroy_xfsdatad_workqueue: destroy_workqueue(xfsdatad_workqueue); out_destroy_xfslogd_workqueue: destroy_workqueue(xfslogd_workqueue); out_free_buf_zone: - kmem_zone_destroy(pagebuf_zone); + kmem_zone_destroy(xfs_buf_zone); out_free_trace_buf: -#ifdef PAGEBUF_TRACE - ktrace_free(pagebuf_trace_buf); +#ifdef XFS_BUF_TRACE + ktrace_free(xfs_buf_trace_buf); #endif return error; } void -pagebuf_terminate(void) +xfs_buf_terminate(void) { - kmem_shake_deregister(pagebuf_shake); - kthread_stop(xfsbufd_task); + kmem_shake_deregister(xfs_buf_shake); destroy_workqueue(xfsdatad_workqueue); destroy_workqueue(xfslogd_workqueue); - kmem_zone_destroy(pagebuf_zone); -#ifdef PAGEBUF_TRACE - ktrace_free(pagebuf_trace_buf); + kmem_zone_destroy(xfs_buf_zone); +#ifdef XFS_BUF_TRACE + ktrace_free(xfs_buf_trace_buf); #endif } diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index 237a35b..4dd6592 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -32,44 +32,47 @@ * Base types */ -#define XFS_BUF_DADDR_NULL ((xfs_daddr_t) (-1LL)) - -#define page_buf_ctob(pp) ((pp) * PAGE_CACHE_SIZE) -#define page_buf_btoc(dd) (((dd) + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT) -#define page_buf_btoct(dd) ((dd) >> PAGE_CACHE_SHIFT) -#define page_buf_poff(aa) ((aa) & ~PAGE_CACHE_MASK) - -typedef enum page_buf_rw_e { - PBRW_READ = 1, /* transfer into target memory */ - PBRW_WRITE = 2, /* transfer from target memory */ - PBRW_ZERO = 3 /* Zero target memory */ -} page_buf_rw_t; - - -typedef enum page_buf_flags_e { /* pb_flags values */ - PBF_READ = (1 << 0), /* buffer intended for reading from device */ - PBF_WRITE = (1 << 1), /* buffer intended for writing to device */ - PBF_MAPPED = (1 << 2), /* buffer mapped (pb_addr valid) */ - PBF_ASYNC = (1 << 4), /* initiator will not wait for completion */ - PBF_DONE = (1 << 5), /* all pages in the buffer uptodate */ - PBF_DELWRI = (1 << 6), /* buffer has dirty pages */ - PBF_STALE = (1 << 7), /* buffer has been staled, do not find it */ - PBF_FS_MANAGED = (1 << 8), /* filesystem controls freeing memory */ - PBF_ORDERED = (1 << 11), /* use ordered writes */ - PBF_READ_AHEAD = (1 << 12), /* asynchronous read-ahead */ +#define XFS_BUF_DADDR_NULL ((xfs_daddr_t) (-1LL)) + +#define xfs_buf_ctob(pp) ((pp) * PAGE_CACHE_SIZE) +#define xfs_buf_btoc(dd) (((dd) + PAGE_CACHE_SIZE-1) >> PAGE_CACHE_SHIFT) +#define xfs_buf_btoct(dd) ((dd) >> PAGE_CACHE_SHIFT) +#define xfs_buf_poff(aa) ((aa) & ~PAGE_CACHE_MASK) + +typedef enum { + XBRW_READ = 1, /* transfer into target memory */ + XBRW_WRITE = 2, /* transfer from target memory */ + XBRW_ZERO = 3, /* Zero target memory */ +} xfs_buf_rw_t; + +typedef enum { + XBF_READ = (1 << 0), /* buffer intended for reading from device */ + XBF_WRITE = (1 << 1), /* buffer intended for writing to device */ + XBF_MAPPED = (1 << 2), /* buffer mapped (b_addr valid) */ + XBF_ASYNC = (1 << 4), /* initiator will not wait for completion */ + XBF_DONE = (1 << 5), /* all pages in the buffer uptodate */ + XBF_DELWRI = (1 << 6), /* buffer has dirty pages */ + XBF_STALE = (1 << 7), /* buffer has been staled, do not find it */ + XBF_FS_MANAGED = (1 << 8), /* filesystem controls freeing memory */ + XBF_ORDERED = (1 << 11), /* use ordered writes */ + XBF_READ_AHEAD = (1 << 12), /* asynchronous read-ahead */ /* flags used only as arguments to access routines */ - PBF_LOCK = (1 << 14), /* lock requested */ - PBF_TRYLOCK = (1 << 15), /* lock requested, but do not wait */ - PBF_DONT_BLOCK = (1 << 16), /* do not block in current thread */ + XBF_LOCK = (1 << 14), /* lock requested */ + XBF_TRYLOCK = (1 << 15), /* lock requested, but do not wait */ + XBF_DONT_BLOCK = (1 << 16), /* do not block in current thread */ /* flags used only internally */ - _PBF_PAGE_CACHE = (1 << 17),/* backed by pagecache */ - _PBF_KMEM_ALLOC = (1 << 18),/* backed by kmem_alloc() */ - _PBF_RUN_QUEUES = (1 << 19),/* run block device task queue */ - _PBF_DELWRI_Q = (1 << 21), /* buffer on delwri queue */ -} page_buf_flags_t; + _XBF_PAGE_CACHE = (1 << 17),/* backed by pagecache */ + _XBF_KMEM_ALLOC = (1 << 18),/* backed by kmem_alloc() */ + _XBF_RUN_QUEUES = (1 << 19),/* run block device task queue */ + _XBF_DELWRI_Q = (1 << 21), /* buffer on delwri queue */ +} xfs_buf_flags_t; +typedef enum { + XBT_FORCE_SLEEP = (0 << 1), + XBT_FORCE_FLUSH = (1 << 1), +} xfs_buftarg_flags_t; typedef struct xfs_bufhash { struct list_head bh_list; @@ -77,477 +80,350 @@ typedef struct xfs_bufhash { } xfs_bufhash_t; typedef struct xfs_buftarg { - dev_t pbr_dev; - struct block_device *pbr_bdev; - struct address_space *pbr_mapping; - unsigned int pbr_bsize; - unsigned int pbr_sshift; - size_t pbr_smask; - - /* per-device buffer hash table */ + dev_t bt_dev; + struct block_device *bt_bdev; + struct address_space *bt_mapping; + unsigned int bt_bsize; + unsigned int bt_sshift; + size_t bt_smask; + + /* per device buffer hash table */ uint bt_hashmask; uint bt_hashshift; xfs_bufhash_t *bt_hash; + + /* per device delwri queue */ + struct task_struct *bt_task; + struct list_head bt_list; + struct list_head bt_delwrite_queue; + spinlock_t bt_delwrite_lock; + unsigned long bt_flags; } xfs_buftarg_t; /* - * xfs_buf_t: Buffer structure for page cache-based buffers + * xfs_buf_t: Buffer structure for pagecache-based buffers + * + * This buffer structure is used by the pagecache buffer management routines + * to refer to an assembly of pages forming a logical buffer. * - * This buffer structure is used by the page cache buffer management routines - * to refer to an assembly of pages forming a logical buffer. The actual I/O - * is performed with buffer_head structures, as required by drivers. - * - * The buffer structure is used on temporary basis only, and discarded when - * released. The real data storage is recorded in the page cache. Metadata is + * The buffer structure is used on a temporary basis only, and discarded when + * released. The real data storage is recorded in the pagecache. Buffers are * hashed to the block device on which the file system resides. */ struct xfs_buf; +typedef void (*xfs_buf_iodone_t)(struct xfs_buf *); +typedef void (*xfs_buf_relse_t)(struct xfs_buf *); +typedef int (*xfs_buf_bdstrat_t)(struct xfs_buf *); -/* call-back function on I/O completion */ -typedef void (*page_buf_iodone_t)(struct xfs_buf *); -/* call-back function on I/O completion */ -typedef void (*page_buf_relse_t)(struct xfs_buf *); -/* pre-write function */ -typedef int (*page_buf_bdstrat_t)(struct xfs_buf *); - -#define PB_PAGES 2 +#define XB_PAGES 2 typedef struct xfs_buf { - struct semaphore pb_sema; /* semaphore for lockables */ - unsigned long pb_queuetime; /* time buffer was queued */ - atomic_t pb_pin_count; /* pin count */ - wait_queue_head_t pb_waiters; /* unpin waiters */ - struct list_head pb_list; - page_buf_flags_t pb_flags; /* status flags */ - struct list_head pb_hash_list; /* hash table list */ - xfs_bufhash_t *pb_hash; /* hash table list start */ - xfs_buftarg_t *pb_target; /* buffer target (device) */ - atomic_t pb_hold; /* reference count */ - xfs_daddr_t pb_bn; /* block number for I/O */ - loff_t pb_file_offset; /* offset in file */ - size_t pb_buffer_length; /* size of buffer in bytes */ - size_t pb_count_desired; /* desired transfer size */ - void *pb_addr; /* virtual address of buffer */ - struct work_struct pb_iodone_work; - atomic_t pb_io_remaining;/* #outstanding I/O requests */ - page_buf_iodone_t pb_iodone; /* I/O completion function */ - page_buf_relse_t pb_relse; /* releasing function */ - page_buf_bdstrat_t pb_strat; /* pre-write function */ - struct semaphore pb_iodonesema; /* Semaphore for I/O waiters */ - void *pb_fspriv; - void *pb_fspriv2; - void *pb_fspriv3; - unsigned short pb_error; /* error code on I/O */ - unsigned short pb_locked; /* page array is locked */ - unsigned int pb_page_count; /* size of page array */ - unsigned int pb_offset; /* page offset in first page */ - struct page **pb_pages; /* array of page pointers */ - struct page *pb_page_array[PB_PAGES]; /* inline pages */ -#ifdef PAGEBUF_LOCK_TRACKING - int pb_last_holder; + struct semaphore b_sema; /* semaphore for lockables */ + unsigned long b_queuetime; /* time buffer was queued */ + atomic_t b_pin_count; /* pin count */ + wait_queue_head_t b_waiters; /* unpin waiters */ + struct list_head b_list; + xfs_buf_flags_t b_flags; /* status flags */ + struct list_head b_hash_list; /* hash table list */ + xfs_bufhash_t *b_hash; /* hash table list start */ + xfs_buftarg_t *b_target; /* buffer target (device) */ + atomic_t b_hold; /* reference count */ + xfs_daddr_t b_bn; /* block number for I/O */ + xfs_off_t b_file_offset; /* offset in file */ + size_t b_buffer_length;/* size of buffer in bytes */ + size_t b_count_desired;/* desired transfer size */ + void *b_addr; /* virtual address of buffer */ + struct work_struct b_iodone_work; + atomic_t b_io_remaining; /* #outstanding I/O requests */ + xfs_buf_iodone_t b_iodone; /* I/O completion function */ + xfs_buf_relse_t b_relse; /* releasing function */ + xfs_buf_bdstrat_t b_strat; /* pre-write function */ + struct semaphore b_iodonesema; /* Semaphore for I/O waiters */ + void *b_fspriv; + void *b_fspriv2; + void *b_fspriv3; + unsigned short b_error; /* error code on I/O */ + unsigned short b_locked; /* page array is locked */ + unsigned int b_page_count; /* size of page array */ + unsigned int b_offset; /* page offset in first page */ + struct page **b_pages; /* array of page pointers */ + struct page *b_page_array[XB_PAGES]; /* inline pages */ +#ifdef XFS_BUF_LOCK_TRACKING + int b_last_holder; #endif } xfs_buf_t; /* Finding and Reading Buffers */ - -extern xfs_buf_t *_pagebuf_find( /* find buffer for block if */ - /* the block is in memory */ - xfs_buftarg_t *, /* inode for block */ - loff_t, /* starting offset of range */ - size_t, /* length of range */ - page_buf_flags_t, /* PBF_LOCK */ - xfs_buf_t *); /* newly allocated buffer */ - +extern xfs_buf_t *_xfs_buf_find(xfs_buftarg_t *, xfs_off_t, size_t, + xfs_buf_flags_t, xfs_buf_t *); #define xfs_incore(buftarg,blkno,len,lockit) \ - _pagebuf_find(buftarg, blkno ,len, lockit, NULL) - -extern xfs_buf_t *xfs_buf_get_flags( /* allocate a buffer */ - xfs_buftarg_t *, /* inode for buffer */ - loff_t, /* starting offset of range */ - size_t, /* length of range */ - page_buf_flags_t); /* PBF_LOCK, PBF_READ, */ - /* PBF_ASYNC */ + _xfs_buf_find(buftarg, blkno ,len, lockit, NULL) +extern xfs_buf_t *xfs_buf_get_flags(xfs_buftarg_t *, xfs_off_t, size_t, + xfs_buf_flags_t); #define xfs_buf_get(target, blkno, len, flags) \ - xfs_buf_get_flags((target), (blkno), (len), PBF_LOCK | PBF_MAPPED) - -extern xfs_buf_t *xfs_buf_read_flags( /* allocate and read a buffer */ - xfs_buftarg_t *, /* inode for buffer */ - loff_t, /* starting offset of range */ - size_t, /* length of range */ - page_buf_flags_t); /* PBF_LOCK, PBF_ASYNC */ + xfs_buf_get_flags((target), (blkno), (len), XBF_LOCK | XBF_MAPPED) +extern xfs_buf_t *xfs_buf_read_flags(xfs_buftarg_t *, xfs_off_t, size_t, + xfs_buf_flags_t); #define xfs_buf_read(target, blkno, len, flags) \ - xfs_buf_read_flags((target), (blkno), (len), PBF_LOCK | PBF_MAPPED) - -extern xfs_buf_t *pagebuf_get_empty( /* allocate pagebuf struct with */ - /* no memory or disk address */ - size_t len, - xfs_buftarg_t *); /* mount point "fake" inode */ - -extern xfs_buf_t *pagebuf_get_no_daddr(/* allocate pagebuf struct */ - /* without disk address */ - size_t len, - xfs_buftarg_t *); /* mount point "fake" inode */ - -extern int pagebuf_associate_memory( - xfs_buf_t *, - void *, - size_t); - -extern void pagebuf_hold( /* increment reference count */ - xfs_buf_t *); /* buffer to hold */ + xfs_buf_read_flags((target), (blkno), (len), XBF_LOCK | XBF_MAPPED) -extern void pagebuf_readahead( /* read ahead into cache */ - xfs_buftarg_t *, /* target for buffer (or NULL) */ - loff_t, /* starting offset of range */ - size_t, /* length of range */ - page_buf_flags_t); /* additional read flags */ +extern xfs_buf_t *xfs_buf_get_empty(size_t, xfs_buftarg_t *); +extern xfs_buf_t *xfs_buf_get_noaddr(size_t, xfs_buftarg_t *); +extern int xfs_buf_associate_memory(xfs_buf_t *, void *, size_t); +extern void xfs_buf_hold(xfs_buf_t *); +extern void xfs_buf_readahead(xfs_buftarg_t *, xfs_off_t, size_t, + xfs_buf_flags_t); /* Releasing Buffers */ - -extern void pagebuf_free( /* deallocate a buffer */ - xfs_buf_t *); /* buffer to deallocate */ - -extern void pagebuf_rele( /* release hold on a buffer */ - xfs_buf_t *); /* buffer to release */ +extern void xfs_buf_free(xfs_buf_t *); +extern void xfs_buf_rele(xfs_buf_t *); /* Locking and Unlocking Buffers */ - -extern int pagebuf_cond_lock( /* lock buffer, if not locked */ - /* (returns -EBUSY if locked) */ - xfs_buf_t *); /* buffer to lock */ - -extern int pagebuf_lock_value( /* return count on lock */ - xfs_buf_t *); /* buffer to check */ - -extern int pagebuf_lock( /* lock buffer */ - xfs_buf_t *); /* buffer to lock */ - -extern void pagebuf_unlock( /* unlock buffer */ - xfs_buf_t *); /* buffer to unlock */ +extern int xfs_buf_cond_lock(xfs_buf_t *); +extern int xfs_buf_lock_value(xfs_buf_t *); +extern void xfs_buf_lock(xfs_buf_t *); +extern void xfs_buf_unlock(xfs_buf_t *); /* Buffer Read and Write Routines */ - -extern void pagebuf_iodone( /* mark buffer I/O complete */ - xfs_buf_t *, /* buffer to mark */ - int); /* run completion locally, or in - * a helper thread. */ - -extern void pagebuf_ioerror( /* mark buffer in error (or not) */ - xfs_buf_t *, /* buffer to mark */ - int); /* error to store (0 if none) */ - -extern int pagebuf_iostart( /* start I/O on a buffer */ - xfs_buf_t *, /* buffer to start */ - page_buf_flags_t); /* PBF_LOCK, PBF_ASYNC, */ - /* PBF_READ, PBF_WRITE, */ - /* PBF_DELWRI */ - -extern int pagebuf_iorequest( /* start real I/O */ - xfs_buf_t *); /* buffer to convey to device */ - -extern int pagebuf_iowait( /* wait for buffer I/O done */ - xfs_buf_t *); /* buffer to wait on */ - -extern void pagebuf_iomove( /* move data in/out of pagebuf */ - xfs_buf_t *, /* buffer to manipulate */ - size_t, /* starting buffer offset */ - size_t, /* length in buffer */ - caddr_t, /* data pointer */ - page_buf_rw_t); /* direction */ - -static inline int pagebuf_iostrategy(xfs_buf_t *pb) +extern void xfs_buf_ioend(xfs_buf_t *, int); +extern void xfs_buf_ioerror(xfs_buf_t *, int); +extern int xfs_buf_iostart(xfs_buf_t *, xfs_buf_flags_t); +extern int xfs_buf_iorequest(xfs_buf_t *); +extern int xfs_buf_iowait(xfs_buf_t *); +extern void xfs_buf_iomove(xfs_buf_t *, size_t, size_t, xfs_caddr_t, + xfs_buf_rw_t); + +static inline int xfs_buf_iostrategy(xfs_buf_t *bp) { - return pb->pb_strat ? pb->pb_strat(pb) : pagebuf_iorequest(pb); + return bp->b_strat ? bp->b_strat(bp) : xfs_buf_iorequest(bp); } -static inline int pagebuf_geterror(xfs_buf_t *pb) +static inline int xfs_buf_geterror(xfs_buf_t *bp) { - return pb ? pb->pb_error : ENOMEM; + return bp ? bp->b_error : ENOMEM; } /* Buffer Utility Routines */ - -extern caddr_t pagebuf_offset( /* pointer at offset in buffer */ - xfs_buf_t *, /* buffer to offset into */ - size_t); /* offset */ +extern xfs_caddr_t xfs_buf_offset(xfs_buf_t *, size_t); /* Pinning Buffer Storage in Memory */ - -extern void pagebuf_pin( /* pin buffer in memory */ - xfs_buf_t *); /* buffer to pin */ - -extern void pagebuf_unpin( /* unpin buffered data */ - xfs_buf_t *); /* buffer to unpin */ - -extern int pagebuf_ispin( /* check if buffer is pinned */ - xfs_buf_t *); /* buffer to check */ +extern void xfs_buf_pin(xfs_buf_t *); +extern void xfs_buf_unpin(xfs_buf_t *); +extern int xfs_buf_ispin(xfs_buf_t *); /* Delayed Write Buffer Routines */ - -extern void pagebuf_delwri_dequeue(xfs_buf_t *); +extern void xfs_buf_delwri_dequeue(xfs_buf_t *); /* Buffer Daemon Setup Routines */ +extern int xfs_buf_init(void); +extern void xfs_buf_terminate(void); -extern int pagebuf_init(void); -extern void pagebuf_terminate(void); - - -#ifdef PAGEBUF_TRACE -extern ktrace_t *pagebuf_trace_buf; -extern void pagebuf_trace( - xfs_buf_t *, /* buffer being traced */ - char *, /* description of operation */ - void *, /* arbitrary diagnostic value */ - void *); /* return address */ +#ifdef XFS_BUF_TRACE +extern ktrace_t *xfs_buf_trace_buf; +extern void xfs_buf_trace(xfs_buf_t *, char *, void *, void *); #else -# define pagebuf_trace(pb, id, ptr, ra) do { } while (0) +#define xfs_buf_trace(bp,id,ptr,ra) do { } while (0) #endif -#define pagebuf_target_name(target) \ - ({ char __b[BDEVNAME_SIZE]; bdevname((target)->pbr_bdev, __b); __b; }) +#define xfs_buf_target_name(target) \ + ({ char __b[BDEVNAME_SIZE]; bdevname((target)->bt_bdev, __b); __b; }) +#define XFS_B_ASYNC XBF_ASYNC +#define XFS_B_DELWRI XBF_DELWRI +#define XFS_B_READ XBF_READ +#define XFS_B_WRITE XBF_WRITE +#define XFS_B_STALE XBF_STALE -/* These are just for xfs_syncsub... it sets an internal variable - * then passes it to VOP_FLUSH_PAGES or adds the flags to a newly gotten buf_t - */ -#define XFS_B_ASYNC PBF_ASYNC -#define XFS_B_DELWRI PBF_DELWRI -#define XFS_B_READ PBF_READ -#define XFS_B_WRITE PBF_WRITE -#define XFS_B_STALE PBF_STALE - -#define XFS_BUF_TRYLOCK PBF_TRYLOCK -#define XFS_INCORE_TRYLOCK PBF_TRYLOCK -#define XFS_BUF_LOCK PBF_LOCK -#define XFS_BUF_MAPPED PBF_MAPPED - -#define BUF_BUSY PBF_DONT_BLOCK - -#define XFS_BUF_BFLAGS(x) ((x)->pb_flags) -#define XFS_BUF_ZEROFLAGS(x) \ - ((x)->pb_flags &= ~(PBF_READ|PBF_WRITE|PBF_ASYNC|PBF_DELWRI)) - -#define XFS_BUF_STALE(x) ((x)->pb_flags |= XFS_B_STALE) -#define XFS_BUF_UNSTALE(x) ((x)->pb_flags &= ~XFS_B_STALE) -#define XFS_BUF_ISSTALE(x) ((x)->pb_flags & XFS_B_STALE) -#define XFS_BUF_SUPER_STALE(x) do { \ - XFS_BUF_STALE(x); \ - pagebuf_delwri_dequeue(x); \ - XFS_BUF_DONE(x); \ - } while (0) +#define XFS_BUF_TRYLOCK XBF_TRYLOCK +#define XFS_INCORE_TRYLOCK XBF_TRYLOCK +#define XFS_BUF_LOCK XBF_LOCK +#define XFS_BUF_MAPPED XBF_MAPPED -#define XFS_BUF_MANAGE PBF_FS_MANAGED -#define XFS_BUF_UNMANAGE(x) ((x)->pb_flags &= ~PBF_FS_MANAGED) - -#define XFS_BUF_DELAYWRITE(x) ((x)->pb_flags |= PBF_DELWRI) -#define XFS_BUF_UNDELAYWRITE(x) pagebuf_delwri_dequeue(x) -#define XFS_BUF_ISDELAYWRITE(x) ((x)->pb_flags & PBF_DELWRI) - -#define XFS_BUF_ERROR(x,no) pagebuf_ioerror(x,no) -#define XFS_BUF_GETERROR(x) pagebuf_geterror(x) -#define XFS_BUF_ISERROR(x) (pagebuf_geterror(x)?1:0) - -#define XFS_BUF_DONE(x) ((x)->pb_flags |= PBF_DONE) -#define XFS_BUF_UNDONE(x) ((x)->pb_flags &= ~PBF_DONE) -#define XFS_BUF_ISDONE(x) ((x)->pb_flags & PBF_DONE) - -#define XFS_BUF_BUSY(x) do { } while (0) -#define XFS_BUF_UNBUSY(x) do { } while (0) -#define XFS_BUF_ISBUSY(x) (1) - -#define XFS_BUF_ASYNC(x) ((x)->pb_flags |= PBF_ASYNC) -#define XFS_BUF_UNASYNC(x) ((x)->pb_flags &= ~PBF_ASYNC) -#define XFS_BUF_ISASYNC(x) ((x)->pb_flags & PBF_ASYNC) - -#define XFS_BUF_ORDERED(x) ((x)->pb_flags |= PBF_ORDERED) -#define XFS_BUF_UNORDERED(x) ((x)->pb_flags &= ~PBF_ORDERED) -#define XFS_BUF_ISORDERED(x) ((x)->pb_flags & PBF_ORDERED) - -#define XFS_BUF_SHUT(x) printk("XFS_BUF_SHUT not implemented yet\n") -#define XFS_BUF_UNSHUT(x) printk("XFS_BUF_UNSHUT not implemented yet\n") -#define XFS_BUF_ISSHUT(x) (0) - -#define XFS_BUF_HOLD(x) pagebuf_hold(x) -#define XFS_BUF_READ(x) ((x)->pb_flags |= PBF_READ) -#define XFS_BUF_UNREAD(x) ((x)->pb_flags &= ~PBF_READ) -#define XFS_BUF_ISREAD(x) ((x)->pb_flags & PBF_READ) - -#define XFS_BUF_WRITE(x) ((x)->pb_flags |= PBF_WRITE) -#define XFS_BUF_UNWRITE(x) ((x)->pb_flags &= ~PBF_WRITE) -#define XFS_BUF_ISWRITE(x) ((x)->pb_flags & PBF_WRITE) - -#define XFS_BUF_ISUNINITIAL(x) (0) -#define XFS_BUF_UNUNINITIAL(x) (0) - -#define XFS_BUF_BP_ISMAPPED(bp) 1 - -#define XFS_BUF_IODONE_FUNC(buf) (buf)->pb_iodone -#define XFS_BUF_SET_IODONE_FUNC(buf, func) \ - (buf)->pb_iodone = (func) -#define XFS_BUF_CLR_IODONE_FUNC(buf) \ - (buf)->pb_iodone = NULL -#define XFS_BUF_SET_BDSTRAT_FUNC(buf, func) \ - (buf)->pb_strat = (func) -#define XFS_BUF_CLR_BDSTRAT_FUNC(buf) \ - (buf)->pb_strat = NULL - -#define XFS_BUF_FSPRIVATE(buf, type) \ - ((type)(buf)->pb_fspriv) -#define XFS_BUF_SET_FSPRIVATE(buf, value) \ - (buf)->pb_fspriv = (void *)(value) -#define XFS_BUF_FSPRIVATE2(buf, type) \ - ((type)(buf)->pb_fspriv2) -#define XFS_BUF_SET_FSPRIVATE2(buf, value) \ - (buf)->pb_fspriv2 = (void *)(value) -#define XFS_BUF_FSPRIVATE3(buf, type) \ - ((type)(buf)->pb_fspriv3) -#define XFS_BUF_SET_FSPRIVATE3(buf, value) \ - (buf)->pb_fspriv3 = (void *)(value) -#define XFS_BUF_SET_START(buf) - -#define XFS_BUF_SET_BRELSE_FUNC(buf, value) \ - (buf)->pb_relse = (value) - -#define XFS_BUF_PTR(bp) (xfs_caddr_t)((bp)->pb_addr) - -static inline xfs_caddr_t xfs_buf_offset(xfs_buf_t *bp, size_t offset) -{ - if (bp->pb_flags & PBF_MAPPED) - return XFS_BUF_PTR(bp) + offset; - return (xfs_caddr_t) pagebuf_offset(bp, offset); -} +#define BUF_BUSY XBF_DONT_BLOCK + +#define XFS_BUF_BFLAGS(bp) ((bp)->b_flags) +#define XFS_BUF_ZEROFLAGS(bp) \ + ((bp)->b_flags &= ~(XBF_READ|XBF_WRITE|XBF_ASYNC|XBF_DELWRI)) + +#define XFS_BUF_STALE(bp) ((bp)->b_flags |= XFS_B_STALE) +#define XFS_BUF_UNSTALE(bp) ((bp)->b_flags &= ~XFS_B_STALE) +#define XFS_BUF_ISSTALE(bp) ((bp)->b_flags & XFS_B_STALE) +#define XFS_BUF_SUPER_STALE(bp) do { \ + XFS_BUF_STALE(bp); \ + xfs_buf_delwri_dequeue(bp); \ + XFS_BUF_DONE(bp); \ + } while (0) -#define XFS_BUF_SET_PTR(bp, val, count) \ - pagebuf_associate_memory(bp, val, count) -#define XFS_BUF_ADDR(bp) ((bp)->pb_bn) -#define XFS_BUF_SET_ADDR(bp, blk) \ - ((bp)->pb_bn = (xfs_daddr_t)(blk)) -#define XFS_BUF_OFFSET(bp) ((bp)->pb_file_offset) -#define XFS_BUF_SET_OFFSET(bp, off) \ - ((bp)->pb_file_offset = (off)) -#define XFS_BUF_COUNT(bp) ((bp)->pb_count_desired) -#define XFS_BUF_SET_COUNT(bp, cnt) \ - ((bp)->pb_count_desired = (cnt)) -#define XFS_BUF_SIZE(bp) ((bp)->pb_buffer_length) -#define XFS_BUF_SET_SIZE(bp, cnt) \ - ((bp)->pb_buffer_length = (cnt)) -#define XFS_BUF_SET_VTYPE_REF(bp, type, ref) -#define XFS_BUF_SET_VTYPE(bp, type) -#define XFS_BUF_SET_REF(bp, ref) - -#define XFS_BUF_ISPINNED(bp) pagebuf_ispin(bp) - -#define XFS_BUF_VALUSEMA(bp) pagebuf_lock_value(bp) -#define XFS_BUF_CPSEMA(bp) (pagebuf_cond_lock(bp) == 0) -#define XFS_BUF_VSEMA(bp) pagebuf_unlock(bp) -#define XFS_BUF_PSEMA(bp,x) pagebuf_lock(bp) -#define XFS_BUF_V_IODONESEMA(bp) up(&bp->pb_iodonesema); - -/* setup the buffer target from a buftarg structure */ -#define XFS_BUF_SET_TARGET(bp, target) \ - (bp)->pb_target = (target) -#define XFS_BUF_TARGET(bp) ((bp)->pb_target) -#define XFS_BUFTARG_NAME(target) \ - pagebuf_target_name(target) - -#define XFS_BUF_SET_VTYPE_REF(bp, type, ref) -#define XFS_BUF_SET_VTYPE(bp, type) -#define XFS_BUF_SET_REF(bp, ref) - -static inline int xfs_bawrite(void *mp, xfs_buf_t *bp) +#define XFS_BUF_MANAGE XBF_FS_MANAGED +#define XFS_BUF_UNMANAGE(bp) ((bp)->b_flags &= ~XBF_FS_MANAGED) + +#define XFS_BUF_DELAYWRITE(bp) ((bp)->b_flags |= XBF_DELWRI) +#define XFS_BUF_UNDELAYWRITE(bp) xfs_buf_delwri_dequeue(bp) +#define XFS_BUF_ISDELAYWRITE(bp) ((bp)->b_flags & XBF_DELWRI) + +#define XFS_BUF_ERROR(bp,no) xfs_buf_ioerror(bp,no) +#define XFS_BUF_GETERROR(bp) xfs_buf_geterror(bp) +#define XFS_BUF_ISERROR(bp) (xfs_buf_geterror(bp) ? 1 : 0) + +#define XFS_BUF_DONE(bp) ((bp)->b_flags |= XBF_DONE) +#define XFS_BUF_UNDONE(bp) ((bp)->b_flags &= ~XBF_DONE) +#define XFS_BUF_ISDONE(bp) ((bp)->b_flags & XBF_DONE) + +#define XFS_BUF_BUSY(bp) do { } while (0) +#define XFS_BUF_UNBUSY(bp) do { } while (0) +#define XFS_BUF_ISBUSY(bp) (1) + +#define XFS_BUF_ASYNC(bp) ((bp)->b_flags |= XBF_ASYNC) +#define XFS_BUF_UNASYNC(bp) ((bp)->b_flags &= ~XBF_ASYNC) +#define XFS_BUF_ISASYNC(bp) ((bp)->b_flags & XBF_ASYNC) + +#define XFS_BUF_ORDERED(bp) ((bp)->b_flags |= XBF_ORDERED) +#define XFS_BUF_UNORDERED(bp) ((bp)->b_flags &= ~XBF_ORDERED) +#define XFS_BUF_ISORDERED(bp) ((bp)->b_flags & XBF_ORDERED) + +#define XFS_BUF_SHUT(bp) do { } while (0) +#define XFS_BUF_UNSHUT(bp) do { } while (0) +#define XFS_BUF_ISSHUT(bp) (0) + +#define XFS_BUF_HOLD(bp) xfs_buf_hold(bp) +#define XFS_BUF_READ(bp) ((bp)->b_flags |= XBF_READ) +#define XFS_BUF_UNREAD(bp) ((bp)->b_flags &= ~XBF_READ) +#define XFS_BUF_ISREAD(bp) ((bp)->b_flags & XBF_READ) + +#define XFS_BUF_WRITE(bp) ((bp)->b_flags |= XBF_WRITE) +#define XFS_BUF_UNWRITE(bp) ((bp)->b_flags &= ~XBF_WRITE) +#define XFS_BUF_ISWRITE(bp) ((bp)->b_flags & XBF_WRITE) + +#define XFS_BUF_ISUNINITIAL(bp) (0) +#define XFS_BUF_UNUNINITIAL(bp) (0) + +#define XFS_BUF_BP_ISMAPPED(bp) (1) + +#define XFS_BUF_IODONE_FUNC(bp) ((bp)->b_iodone) +#define XFS_BUF_SET_IODONE_FUNC(bp, func) ((bp)->b_iodone = (func)) +#define XFS_BUF_CLR_IODONE_FUNC(bp) ((bp)->b_iodone = NULL) +#define XFS_BUF_SET_BDSTRAT_FUNC(bp, func) ((bp)->b_strat = (func)) +#define XFS_BUF_CLR_BDSTRAT_FUNC(bp) ((bp)->b_strat = NULL) + +#define XFS_BUF_FSPRIVATE(bp, type) ((type)(bp)->b_fspriv) +#define XFS_BUF_SET_FSPRIVATE(bp, val) ((bp)->b_fspriv = (void*)(val)) +#define XFS_BUF_FSPRIVATE2(bp, type) ((type)(bp)->b_fspriv2) +#define XFS_BUF_SET_FSPRIVATE2(bp, val) ((bp)->b_fspriv2 = (void*)(val)) +#define XFS_BUF_FSPRIVATE3(bp, type) ((type)(bp)->b_fspriv3) +#define XFS_BUF_SET_FSPRIVATE3(bp, val) ((bp)->b_fspriv3 = (void*)(val)) +#define XFS_BUF_SET_START(bp) do { } while (0) +#define XFS_BUF_SET_BRELSE_FUNC(bp, func) ((bp)->b_relse = (func)) + +#define XFS_BUF_PTR(bp) (xfs_caddr_t)((bp)->b_addr) +#define XFS_BUF_SET_PTR(bp, val, cnt) xfs_buf_associate_memory(bp, val, cnt) +#define XFS_BUF_ADDR(bp) ((bp)->b_bn) +#define XFS_BUF_SET_ADDR(bp, bno) ((bp)->b_bn = (xfs_daddr_t)(bno)) +#define XFS_BUF_OFFSET(bp) ((bp)->b_file_offset) +#define XFS_BUF_SET_OFFSET(bp, off) ((bp)->b_file_offset = (off)) +#define XFS_BUF_COUNT(bp) ((bp)->b_count_desired) +#define XFS_BUF_SET_COUNT(bp, cnt) ((bp)->b_count_desired = (cnt)) +#define XFS_BUF_SIZE(bp) ((bp)->b_buffer_length) +#define XFS_BUF_SET_SIZE(bp, cnt) ((bp)->b_buffer_length = (cnt)) + +#define XFS_BUF_SET_VTYPE_REF(bp, type, ref) do { } while (0) +#define XFS_BUF_SET_VTYPE(bp, type) do { } while (0) +#define XFS_BUF_SET_REF(bp, ref) do { } while (0) + +#define XFS_BUF_ISPINNED(bp) xfs_buf_ispin(bp) + +#define XFS_BUF_VALUSEMA(bp) xfs_buf_lock_value(bp) +#define XFS_BUF_CPSEMA(bp) (xfs_buf_cond_lock(bp) == 0) +#define XFS_BUF_VSEMA(bp) xfs_buf_unlock(bp) +#define XFS_BUF_PSEMA(bp,x) xfs_buf_lock(bp) +#define XFS_BUF_V_IODONESEMA(bp) up(&bp->b_iodonesema); + +#define XFS_BUF_SET_TARGET(bp, target) ((bp)->b_target = (target)) +#define XFS_BUF_TARGET(bp) ((bp)->b_target) +#define XFS_BUFTARG_NAME(target) xfs_buf_target_name(target) + +static inline int xfs_bawrite(void *mp, xfs_buf_t *bp) { - bp->pb_fspriv3 = mp; - bp->pb_strat = xfs_bdstrat_cb; - pagebuf_delwri_dequeue(bp); - return pagebuf_iostart(bp, PBF_WRITE | PBF_ASYNC | _PBF_RUN_QUEUES); + bp->b_fspriv3 = mp; + bp->b_strat = xfs_bdstrat_cb; + xfs_buf_delwri_dequeue(bp); + return xfs_buf_iostart(bp, XBF_WRITE | XBF_ASYNC | _XBF_RUN_QUEUES); } -static inline void xfs_buf_relse(xfs_buf_t *bp) +static inline void xfs_buf_relse(xfs_buf_t *bp) { - if (!bp->pb_relse) - pagebuf_unlock(bp); - pagebuf_rele(bp); + if (!bp->b_relse) + xfs_buf_unlock(bp); + xfs_buf_rele(bp); } -#define xfs_bpin(bp) pagebuf_pin(bp) -#define xfs_bunpin(bp) pagebuf_unpin(bp) +#define xfs_bpin(bp) xfs_buf_pin(bp) +#define xfs_bunpin(bp) xfs_buf_unpin(bp) #define xfs_buftrace(id, bp) \ - pagebuf_trace(bp, id, NULL, (void *)__builtin_return_address(0)) + xfs_buf_trace(bp, id, NULL, (void *)__builtin_return_address(0)) -#define xfs_biodone(pb) \ - pagebuf_iodone(pb, 0) +#define xfs_biodone(bp) xfs_buf_ioend(bp, 0) -#define xfs_biomove(pb, off, len, data, rw) \ - pagebuf_iomove((pb), (off), (len), (data), \ - ((rw) == XFS_B_WRITE) ? PBRW_WRITE : PBRW_READ) +#define xfs_biomove(bp, off, len, data, rw) \ + xfs_buf_iomove((bp), (off), (len), (data), \ + ((rw) == XFS_B_WRITE) ? XBRW_WRITE : XBRW_READ) -#define xfs_biozero(pb, off, len) \ - pagebuf_iomove((pb), (off), (len), NULL, PBRW_ZERO) +#define xfs_biozero(bp, off, len) \ + xfs_buf_iomove((bp), (off), (len), NULL, XBRW_ZERO) -static inline int XFS_bwrite(xfs_buf_t *pb) +static inline int XFS_bwrite(xfs_buf_t *bp) { - int iowait = (pb->pb_flags & PBF_ASYNC) == 0; + int iowait = (bp->b_flags & XBF_ASYNC) == 0; int error = 0; if (!iowait) - pb->pb_flags |= _PBF_RUN_QUEUES; + bp->b_flags |= _XBF_RUN_QUEUES; - pagebuf_delwri_dequeue(pb); - pagebuf_iostrategy(pb); + xfs_buf_delwri_dequeue(bp); + xfs_buf_iostrategy(bp); if (iowait) { - error = pagebuf_iowait(pb); - xfs_buf_relse(pb); + error = xfs_buf_iowait(bp); + xfs_buf_relse(bp); } return error; } -#define XFS_bdwrite(pb) \ - pagebuf_iostart(pb, PBF_DELWRI | PBF_ASYNC) +#define XFS_bdwrite(bp) xfs_buf_iostart(bp, XBF_DELWRI | XBF_ASYNC) static inline int xfs_bdwrite(void *mp, xfs_buf_t *bp) { - bp->pb_strat = xfs_bdstrat_cb; - bp->pb_fspriv3 = mp; - - return pagebuf_iostart(bp, PBF_DELWRI | PBF_ASYNC); + bp->b_strat = xfs_bdstrat_cb; + bp->b_fspriv3 = mp; + return xfs_buf_iostart(bp, XBF_DELWRI | XBF_ASYNC); } -#define XFS_bdstrat(bp) pagebuf_iorequest(bp) +#define XFS_bdstrat(bp) xfs_buf_iorequest(bp) -#define xfs_iowait(pb) pagebuf_iowait(pb) +#define xfs_iowait(bp) xfs_buf_iowait(bp) #define xfs_baread(target, rablkno, ralen) \ - pagebuf_readahead((target), (rablkno), (ralen), PBF_DONT_BLOCK) - -#define xfs_buf_get_empty(len, target) pagebuf_get_empty((len), (target)) -#define xfs_buf_get_noaddr(len, target) pagebuf_get_no_daddr((len), (target)) -#define xfs_buf_free(bp) pagebuf_free(bp) + xfs_buf_readahead((target), (rablkno), (ralen), XBF_DONT_BLOCK) /* * Handling of buftargs. */ - extern xfs_buftarg_t *xfs_alloc_buftarg(struct block_device *, int); extern void xfs_free_buftarg(xfs_buftarg_t *, int); extern void xfs_wait_buftarg(xfs_buftarg_t *); extern int xfs_setsize_buftarg(xfs_buftarg_t *, unsigned int, unsigned int); extern int xfs_flush_buftarg(xfs_buftarg_t *, int); -#define xfs_getsize_buftarg(buftarg) \ - block_size((buftarg)->pbr_bdev) -#define xfs_readonly_buftarg(buftarg) \ - bdev_read_only((buftarg)->pbr_bdev) -#define xfs_binval(buftarg) \ - xfs_flush_buftarg(buftarg, 1) -#define XFS_bflush(buftarg) \ - xfs_flush_buftarg(buftarg, 1) +#define xfs_getsize_buftarg(buftarg) block_size((buftarg)->bt_bdev) +#define xfs_readonly_buftarg(buftarg) bdev_read_only((buftarg)->bt_bdev) + +#define xfs_binval(buftarg) xfs_flush_buftarg(buftarg, 1) +#define XFS_bflush(buftarg) xfs_flush_buftarg(buftarg, 1) #endif /* __XFS_BUF_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c index 06111d0..ced4404 100644 --- a/fs/xfs/linux-2.6/xfs_file.c +++ b/fs/xfs/linux-2.6/xfs_file.c @@ -509,16 +509,14 @@ linvfs_open_exec( vnode_t *vp = LINVFS_GET_VP(inode); xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp); int error = 0; - bhv_desc_t *bdp; xfs_inode_t *ip; if (vp->v_vfsp->vfs_flag & VFS_DMI) { - bdp = vn_bhv_lookup(VN_BHV_HEAD(vp), &xfs_vnodeops); - if (!bdp) { + ip = xfs_vtoi(vp); + if (!ip) { error = -EINVAL; goto open_exec_out; } - ip = XFS_BHVTOI(bdp); if (DM_EVENT_ENABLED(vp->v_vfsp, ip, DM_EVENT_READ)) { error = -XFS_SEND_DATA(mp, DM_EVENT_READ, vp, 0, 0, 0, NULL); diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c index f98c5be..b3b2cfd 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl.c +++ b/fs/xfs/linux-2.6/xfs_ioctl.c @@ -145,13 +145,10 @@ xfs_find_handle( if (cmd != XFS_IOC_PATH_TO_FSHANDLE) { xfs_inode_t *ip; - bhv_desc_t *bhv; int lock_mode; /* need to get access to the xfs_inode to read the generation */ - bhv = vn_bhv_lookup_unlocked(VN_BHV_HEAD(vp), &xfs_vnodeops); - ASSERT(bhv); - ip = XFS_BHVTOI(bhv); + ip = xfs_vtoi(vp); ASSERT(ip); lock_mode = xfs_ilock_map_shared(ip); @@ -750,9 +747,8 @@ xfs_ioctl( (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ? mp->m_rtdev_targp : mp->m_ddev_targp; - da.d_mem = da.d_miniosz = 1 << target->pbr_sshift; - /* The size dio will do in one go */ - da.d_maxiosz = 64 * PAGE_CACHE_SIZE; + da.d_mem = da.d_miniosz = 1 << target->bt_sshift; + da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); if (copy_to_user(arg, &da, sizeof(da))) return -XFS_ERROR(EFAULT); diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c index 97fb147..1294039 100644 --- a/fs/xfs/linux-2.6/xfs_iops.c +++ b/fs/xfs/linux-2.6/xfs_iops.c @@ -53,11 +53,46 @@ #include <linux/xattr.h> #include <linux/namei.h> +#include <linux/security.h> #define IS_NOATIME(inode) ((inode->i_sb->s_flags & MS_NOATIME) || \ (S_ISDIR(inode->i_mode) && inode->i_sb->s_flags & MS_NODIRATIME)) /* + * Get a XFS inode from a given vnode. + */ +xfs_inode_t * +xfs_vtoi( + struct vnode *vp) +{ + bhv_desc_t *bdp; + + bdp = bhv_lookup_range(VN_BHV_HEAD(vp), + VNODE_POSITION_XFS, VNODE_POSITION_XFS); + if (unlikely(bdp == NULL)) + return NULL; + return XFS_BHVTOI(bdp); +} + +/* + * Bring the atime in the XFS inode uptodate. + * Used before logging the inode to disk or when the Linux inode goes away. + */ +void +xfs_synchronize_atime( + xfs_inode_t *ip) +{ + vnode_t *vp; + + vp = XFS_ITOV_NULL(ip); + if (vp) { + struct inode *inode = &vp->v_inode; + ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec; + ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec; + } +} + +/* * Change the requested timestamp in the given inode. * We don't lock across timestamp updates, and we don't log them but * we do record the fact that there is dirty information in core. @@ -76,23 +111,6 @@ xfs_ichgtime( struct inode *inode = LINVFS_GET_IP(XFS_ITOV(ip)); timespec_t tv; - /* - * We're not supposed to change timestamps in readonly-mounted - * filesystems. Throw it away if anyone asks us. - */ - if (unlikely(IS_RDONLY(inode))) - return; - - /* - * Don't update access timestamps on reads if mounted "noatime". - * Throw it away if anyone asks us. - */ - if (unlikely( - (ip->i_mount->m_flags & XFS_MOUNT_NOATIME || IS_NOATIME(inode)) && - (flags & (XFS_ICHGTIME_ACC|XFS_ICHGTIME_MOD|XFS_ICHGTIME_CHG)) == - XFS_ICHGTIME_ACC)) - return; - nanotime(&tv); if (flags & XFS_ICHGTIME_MOD) { inode->i_mtime = tv; @@ -129,8 +147,6 @@ xfs_ichgtime( * Variant on the above which avoids querying the system clock * in situations where we know the Linux inode timestamps have * just been updated (and so we can update our inode cheaply). - * We also skip the readonly and noatime checks here, they are - * also catered for already. */ void xfs_ichgtime_fast( @@ -141,20 +157,16 @@ xfs_ichgtime_fast( timespec_t *tvp; /* - * We're not supposed to change timestamps in readonly-mounted - * filesystems. Throw it away if anyone asks us. + * Atime updates for read() & friends are handled lazily now, and + * explicit updates must go through xfs_ichgtime() */ - if (unlikely(IS_RDONLY(inode))) - return; + ASSERT((flags & XFS_ICHGTIME_ACC) == 0); /* - * Don't update access timestamps on reads if mounted "noatime". - * Throw it away if anyone asks us. + * We're not supposed to change timestamps in readonly-mounted + * filesystems. Throw it away if anyone asks us. */ - if (unlikely( - (ip->i_mount->m_flags & XFS_MOUNT_NOATIME || IS_NOATIME(inode)) && - ((flags & (XFS_ICHGTIME_ACC|XFS_ICHGTIME_MOD|XFS_ICHGTIME_CHG)) == - XFS_ICHGTIME_ACC))) + if (unlikely(IS_RDONLY(inode))) return; if (flags & XFS_ICHGTIME_MOD) { @@ -162,11 +174,6 @@ xfs_ichgtime_fast( ip->i_d.di_mtime.t_sec = (__int32_t)tvp->tv_sec; ip->i_d.di_mtime.t_nsec = (__int32_t)tvp->tv_nsec; } - if (flags & XFS_ICHGTIME_ACC) { - tvp = &inode->i_atime; - ip->i_d.di_atime.t_sec = (__int32_t)tvp->tv_sec; - ip->i_d.di_atime.t_nsec = (__int32_t)tvp->tv_nsec; - } if (flags & XFS_ICHGTIME_CHG) { tvp = &inode->i_ctime; ip->i_d.di_ctime.t_sec = (__int32_t)tvp->tv_sec; @@ -213,6 +220,39 @@ validate_fields( } /* + * Hook in SELinux. This is not quite correct yet, what we really need + * here (as we do for default ACLs) is a mechanism by which creation of + * these attrs can be journalled at inode creation time (along with the + * inode, of course, such that log replay can't cause these to be lost). + */ +STATIC int +linvfs_init_security( + struct vnode *vp, + struct inode *dir) +{ + struct inode *ip = LINVFS_GET_IP(vp); + size_t length; + void *value; + char *name; + int error; + + error = security_inode_init_security(ip, dir, &name, &value, &length); + if (error) { + if (error == -EOPNOTSUPP) + return 0; + return -error; + } + + VOP_ATTR_SET(vp, name, value, length, ATTR_SECURE, NULL, error); + if (!error) + VMODIFY(vp); + + kfree(name); + kfree(value); + return error; +} + +/* * Determine whether a process has a valid fs_struct (kernel daemons * like knfsd don't have an fs_struct). * @@ -277,6 +317,9 @@ linvfs_mknod( break; } + if (!error) + error = linvfs_init_security(vp, dir); + if (default_acl) { if (!error) { error = _ACL_INHERIT(vp, &va, default_acl); @@ -293,8 +336,6 @@ linvfs_mknod( teardown.d_inode = ip = LINVFS_GET_IP(vp); teardown.d_name = dentry->d_name; - vn_mark_bad(vp); - if (S_ISDIR(mode)) VOP_RMDIR(dvp, &teardown, NULL, err2); else @@ -505,7 +546,7 @@ linvfs_follow_link( ASSERT(dentry); ASSERT(nd); - link = (char *)kmalloc(MAXNAMELEN+1, GFP_KERNEL); + link = (char *)kmalloc(MAXPATHLEN+1, GFP_KERNEL); if (!link) { nd_set_link(nd, ERR_PTR(-ENOMEM)); return NULL; @@ -521,12 +562,12 @@ linvfs_follow_link( vp = LINVFS_GET_VP(dentry->d_inode); iov.iov_base = link; - iov.iov_len = MAXNAMELEN; + iov.iov_len = MAXPATHLEN; uio->uio_iov = &iov; uio->uio_offset = 0; uio->uio_segflg = UIO_SYSSPACE; - uio->uio_resid = MAXNAMELEN; + uio->uio_resid = MAXPATHLEN; uio->uio_iovcnt = 1; VOP_READLINK(vp, uio, 0, NULL, error); @@ -534,7 +575,7 @@ linvfs_follow_link( kfree(link); link = ERR_PTR(-error); } else { - link[MAXNAMELEN - uio->uio_resid] = '\0'; + link[MAXPATHLEN - uio->uio_resid] = '\0'; } kfree(uio); diff --git a/fs/xfs/linux-2.6/xfs_iops.h b/fs/xfs/linux-2.6/xfs_iops.h index ee784b6..6899a6b 100644 --- a/fs/xfs/linux-2.6/xfs_iops.h +++ b/fs/xfs/linux-2.6/xfs_iops.h @@ -26,11 +26,6 @@ extern struct file_operations linvfs_file_operations; extern struct file_operations linvfs_invis_file_operations; extern struct file_operations linvfs_dir_operations; -extern struct address_space_operations linvfs_aops; - -extern int linvfs_get_block(struct inode *, sector_t, struct buffer_head *, int); -extern void linvfs_unwritten_done(struct buffer_head *, int); - extern int xfs_ioctl(struct bhv_desc *, struct inode *, struct file *, int, unsigned int, void __user *); diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h index d8e21ba..67389b7 100644 --- a/fs/xfs/linux-2.6/xfs_linux.h +++ b/fs/xfs/linux-2.6/xfs_linux.h @@ -110,10 +110,6 @@ * delalloc and these ondisk-uninitialised buffers. */ BUFFER_FNS(PrivateStart, unwritten); -static inline void set_buffer_unwritten_io(struct buffer_head *bh) -{ - bh->b_end_io = linvfs_unwritten_done; -} #define restricted_chown xfs_params.restrict_chown.val #define irix_sgid_inherit xfs_params.sgid_inherit.val @@ -232,7 +228,7 @@ static inline void set_buffer_unwritten_io(struct buffer_head *bh) #define xfs_itruncate_data(ip, off) \ (-vmtruncate(LINVFS_GET_IP(XFS_ITOV(ip)), (off))) #define xfs_statvfs_fsid(statp, mp) \ - ({ u64 id = huge_encode_dev((mp)->m_dev); \ + ({ u64 id = huge_encode_dev((mp)->m_ddev_targp->bt_dev); \ __kernel_fsid_t *fsid = &(statp)->f_fsid; \ (fsid->val[0] = (u32)id, fsid->val[1] = (u32)(id >> 32)); }) diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c index 885dfaf..e0ab45f 100644 --- a/fs/xfs/linux-2.6/xfs_lrw.c +++ b/fs/xfs/linux-2.6/xfs_lrw.c @@ -233,8 +233,8 @@ xfs_read( xfs_buftarg_t *target = (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ? mp->m_rtdev_targp : mp->m_ddev_targp; - if ((*offset & target->pbr_smask) || - (size & target->pbr_smask)) { + if ((*offset & target->bt_smask) || + (size & target->bt_smask)) { if (*offset == ip->i_d.di_size) { return (0); } @@ -281,9 +281,6 @@ xfs_read( xfs_iunlock(ip, XFS_IOLOCK_SHARED); - if (likely(!(ioflags & IO_INVIS))) - xfs_ichgtime_fast(ip, inode, XFS_ICHGTIME_ACC); - unlock_isem: if (unlikely(ioflags & IO_ISDIRECT)) mutex_unlock(&inode->i_mutex); @@ -346,9 +343,6 @@ xfs_sendfile( if (ret > 0) XFS_STATS_ADD(xs_read_bytes, ret); - if (likely(!(ioflags & IO_INVIS))) - xfs_ichgtime_fast(ip, LINVFS_GET_IP(vp), XFS_ICHGTIME_ACC); - return ret; } @@ -362,7 +356,6 @@ STATIC int /* error (positive) */ xfs_zero_last_block( struct inode *ip, xfs_iocore_t *io, - xfs_off_t offset, xfs_fsize_t isize, xfs_fsize_t end_size) { @@ -371,19 +364,16 @@ xfs_zero_last_block( int nimaps; int zero_offset; int zero_len; - int isize_fsb_offset; int error = 0; xfs_bmbt_irec_t imap; loff_t loff; - size_t lsize; ASSERT(ismrlocked(io->io_lock, MR_UPDATE) != 0); - ASSERT(offset > isize); mp = io->io_mount; - isize_fsb_offset = XFS_B_FSB_OFFSET(mp, isize); - if (isize_fsb_offset == 0) { + zero_offset = XFS_B_FSB_OFFSET(mp, isize); + if (zero_offset == 0) { /* * There are no extra bytes in the last block on disk to * zero, so return. @@ -413,10 +403,8 @@ xfs_zero_last_block( */ XFS_IUNLOCK(mp, io, XFS_ILOCK_EXCL| XFS_EXTSIZE_RD); loff = XFS_FSB_TO_B(mp, last_fsb); - lsize = XFS_FSB_TO_B(mp, 1); - zero_offset = isize_fsb_offset; - zero_len = mp->m_sb.sb_blocksize - isize_fsb_offset; + zero_len = mp->m_sb.sb_blocksize - zero_offset; error = xfs_iozero(ip, loff + zero_offset, zero_len, end_size); @@ -447,20 +435,17 @@ xfs_zero_eof( struct inode *ip = LINVFS_GET_IP(vp); xfs_fileoff_t start_zero_fsb; xfs_fileoff_t end_zero_fsb; - xfs_fileoff_t prev_zero_fsb; xfs_fileoff_t zero_count_fsb; xfs_fileoff_t last_fsb; xfs_extlen_t buf_len_fsb; - xfs_extlen_t prev_zero_count; xfs_mount_t *mp; int nimaps; int error = 0; xfs_bmbt_irec_t imap; - loff_t loff; - size_t lsize; ASSERT(ismrlocked(io->io_lock, MR_UPDATE)); ASSERT(ismrlocked(io->io_iolock, MR_UPDATE)); + ASSERT(offset > isize); mp = io->io_mount; @@ -468,7 +453,7 @@ xfs_zero_eof( * First handle zeroing the block on which isize resides. * We only zero a part of that block so it is handled specially. */ - error = xfs_zero_last_block(ip, io, offset, isize, end_size); + error = xfs_zero_last_block(ip, io, isize, end_size); if (error) { ASSERT(ismrlocked(io->io_lock, MR_UPDATE)); ASSERT(ismrlocked(io->io_iolock, MR_UPDATE)); @@ -496,8 +481,6 @@ xfs_zero_eof( } ASSERT(start_zero_fsb <= end_zero_fsb); - prev_zero_fsb = NULLFILEOFF; - prev_zero_count = 0; while (start_zero_fsb <= end_zero_fsb) { nimaps = 1; zero_count_fsb = end_zero_fsb - start_zero_fsb + 1; @@ -519,10 +502,7 @@ xfs_zero_eof( * that sits on a hole and sets the page as P_HOLE * and calls remapf if it is a mapped file. */ - prev_zero_fsb = NULLFILEOFF; - prev_zero_count = 0; - start_zero_fsb = imap.br_startoff + - imap.br_blockcount; + start_zero_fsb = imap.br_startoff + imap.br_blockcount; ASSERT(start_zero_fsb <= (end_zero_fsb + 1)); continue; } @@ -543,17 +523,15 @@ xfs_zero_eof( */ XFS_IUNLOCK(mp, io, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD); - loff = XFS_FSB_TO_B(mp, start_zero_fsb); - lsize = XFS_FSB_TO_B(mp, buf_len_fsb); - - error = xfs_iozero(ip, loff, lsize, end_size); + error = xfs_iozero(ip, + XFS_FSB_TO_B(mp, start_zero_fsb), + XFS_FSB_TO_B(mp, buf_len_fsb), + end_size); if (error) { goto out_lock; } - prev_zero_fsb = start_zero_fsb; - prev_zero_count = buf_len_fsb; start_zero_fsb = imap.br_startoff + buf_len_fsb; ASSERT(start_zero_fsb <= (end_zero_fsb + 1)); @@ -640,7 +618,7 @@ xfs_write( (xip->i_d.di_flags & XFS_DIFLAG_REALTIME) ? mp->m_rtdev_targp : mp->m_ddev_targp; - if ((pos & target->pbr_smask) || (count & target->pbr_smask)) + if ((pos & target->bt_smask) || (count & target->bt_smask)) return XFS_ERROR(-EINVAL); if (!VN_CACHED(vp) && pos < i_size_read(inode)) @@ -831,6 +809,10 @@ retry: goto retry; } + isize = i_size_read(inode); + if (unlikely(ret < 0 && ret != -EFAULT && *offset > isize)) + *offset = isize; + if (*offset > xip->i_d.di_size) { xfs_ilock(xip, XFS_ILOCK_EXCL); if (*offset > xip->i_d.di_size) { @@ -956,7 +938,7 @@ xfs_bdstrat_cb(struct xfs_buf *bp) mp = XFS_BUF_FSPRIVATE3(bp, xfs_mount_t *); if (!XFS_FORCED_SHUTDOWN(mp)) { - pagebuf_iorequest(bp); + xfs_buf_iorequest(bp); return 0; } else { xfs_buftrace("XFS__BDSTRAT IOERROR", bp); @@ -1009,7 +991,7 @@ xfsbdstrat( * if (XFS_BUF_IS_GRIO(bp)) { */ - pagebuf_iorequest(bp); + xfs_buf_iorequest(bp); return 0; } diff --git a/fs/xfs/linux-2.6/xfs_stats.c b/fs/xfs/linux-2.6/xfs_stats.c index 6c40a74..8955720 100644 --- a/fs/xfs/linux-2.6/xfs_stats.c +++ b/fs/xfs/linux-2.6/xfs_stats.c @@ -34,7 +34,7 @@ xfs_read_xfsstats( __uint64_t xs_write_bytes = 0; __uint64_t xs_read_bytes = 0; - static struct xstats_entry { + static const struct xstats_entry { char *desc; int endpoint; } xstats[] = { diff --git a/fs/xfs/linux-2.6/xfs_stats.h b/fs/xfs/linux-2.6/xfs_stats.h index 50027c4..8ba7a2f 100644 --- a/fs/xfs/linux-2.6/xfs_stats.h +++ b/fs/xfs/linux-2.6/xfs_stats.h @@ -109,15 +109,15 @@ struct xfsstats { __uint32_t vn_remove; /* # times vn_remove called */ __uint32_t vn_free; /* # times vn_free called */ #define XFSSTAT_END_BUF (XFSSTAT_END_VNODE_OPS+9) - __uint32_t pb_get; - __uint32_t pb_create; - __uint32_t pb_get_locked; - __uint32_t pb_get_locked_waited; - __uint32_t pb_busy_locked; - __uint32_t pb_miss_locked; - __uint32_t pb_page_retries; - __uint32_t pb_page_found; - __uint32_t pb_get_read; + __uint32_t xb_get; + __uint32_t xb_create; + __uint32_t xb_get_locked; + __uint32_t xb_get_locked_waited; + __uint32_t xb_busy_locked; + __uint32_t xb_miss_locked; + __uint32_t xb_page_retries; + __uint32_t xb_page_found; + __uint32_t xb_get_read; /* Extra precision counters */ __uint64_t xs_xstrat_bytes; __uint64_t xs_write_bytes; diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c index 6116b5b..f22e426 100644 --- a/fs/xfs/linux-2.6/xfs_super.c +++ b/fs/xfs/linux-2.6/xfs_super.c @@ -306,13 +306,15 @@ xfs_mountfs_check_barriers(xfs_mount_t *mp) xfs_fs_cmn_err(CE_NOTE, mp, "Disabling barriers, not supported with external log device"); mp->m_flags &= ~XFS_MOUNT_BARRIER; + return; } - if (mp->m_ddev_targp->pbr_bdev->bd_disk->queue->ordered == + if (mp->m_ddev_targp->bt_bdev->bd_disk->queue->ordered == QUEUE_ORDERED_NONE) { xfs_fs_cmn_err(CE_NOTE, mp, "Disabling barriers, not supported by the underlying device"); mp->m_flags &= ~XFS_MOUNT_BARRIER; + return; } error = xfs_barrier_test(mp); @@ -320,6 +322,7 @@ xfs_mountfs_check_barriers(xfs_mount_t *mp) xfs_fs_cmn_err(CE_NOTE, mp, "Disabling barriers, trial barrier write failed"); mp->m_flags &= ~XFS_MOUNT_BARRIER; + return; } } @@ -327,7 +330,7 @@ void xfs_blkdev_issue_flush( xfs_buftarg_t *buftarg) { - blkdev_issue_flush(buftarg->pbr_bdev, NULL); + blkdev_issue_flush(buftarg->bt_bdev, NULL); } STATIC struct inode * @@ -576,7 +579,7 @@ xfssyncd( timeleft = schedule_timeout_interruptible(timeleft); /* swsusp */ try_to_freeze(); - if (kthread_should_stop()) + if (kthread_should_stop() && list_empty(&vfsp->vfs_sync_list)) break; spin_lock(&vfsp->vfs_sync_lock); @@ -966,9 +969,9 @@ init_xfs_fs( void ) if (error < 0) goto undo_zones; - error = pagebuf_init(); + error = xfs_buf_init(); if (error < 0) - goto undo_pagebuf; + goto undo_buffers; vn_init(); xfs_init(); @@ -982,9 +985,9 @@ init_xfs_fs( void ) return 0; undo_register: - pagebuf_terminate(); + xfs_buf_terminate(); -undo_pagebuf: +undo_buffers: linvfs_destroy_zones(); undo_zones: @@ -998,7 +1001,7 @@ exit_xfs_fs( void ) XFS_DM_EXIT(&xfs_fs_type); unregister_filesystem(&xfs_fs_type); xfs_cleanup(); - pagebuf_terminate(); + xfs_buf_terminate(); linvfs_destroy_zones(); ktrace_uninit(); } diff --git a/fs/xfs/linux-2.6/xfs_vnode.c b/fs/xfs/linux-2.6/xfs_vnode.c index e9bbcb4..260dd84 100644 --- a/fs/xfs/linux-2.6/xfs_vnode.c +++ b/fs/xfs/linux-2.6/xfs_vnode.c @@ -106,7 +106,6 @@ vn_revalidate_core( inode->i_blocks = vap->va_nblocks; inode->i_mtime = vap->va_mtime; inode->i_ctime = vap->va_ctime; - inode->i_atime = vap->va_atime; inode->i_blksize = vap->va_blocksize; if (vap->va_xflags & XFS_XFLAG_IMMUTABLE) inode->i_flags |= S_IMMUTABLE; diff --git a/fs/xfs/linux-2.6/xfs_vnode.h b/fs/xfs/linux-2.6/xfs_vnode.h index f2bbb32..0fe2419 100644 --- a/fs/xfs/linux-2.6/xfs_vnode.h +++ b/fs/xfs/linux-2.6/xfs_vnode.h @@ -566,6 +566,25 @@ static inline int VN_BAD(struct vnode *vp) } /* + * Extracting atime values in various formats + */ +static inline void vn_atime_to_bstime(struct vnode *vp, xfs_bstime_t *bs_atime) +{ + bs_atime->tv_sec = vp->v_inode.i_atime.tv_sec; + bs_atime->tv_nsec = vp->v_inode.i_atime.tv_nsec; +} + +static inline void vn_atime_to_timespec(struct vnode *vp, struct timespec *ts) +{ + *ts = vp->v_inode.i_atime; +} + +static inline void vn_atime_to_time_t(struct vnode *vp, time_t *tt) +{ + *tt = vp->v_inode.i_atime.tv_sec; +} + +/* * Some useful predicates. */ #define VN_MAPPED(vp) mapping_mapped(LINVFS_GET_IP(vp)->i_mapping) diff --git a/fs/xfs/quota/xfs_dquot_item.c b/fs/xfs/quota/xfs_dquot_item.c index 2f69822..2ec6b44 100644 --- a/fs/xfs/quota/xfs_dquot_item.c +++ b/fs/xfs/quota/xfs_dquot_item.c @@ -239,7 +239,7 @@ xfs_qm_dquot_logitem_pushbuf( * trying to duplicate our effort. */ ASSERT(qip->qli_pushbuf_flag != 0); - ASSERT(qip->qli_push_owner == get_thread_id()); + ASSERT(qip->qli_push_owner == current_pid()); /* * If flushlock isn't locked anymore, chances are that the @@ -333,7 +333,7 @@ xfs_qm_dquot_logitem_trylock( qip->qli_pushbuf_flag = 1; ASSERT(qip->qli_format.qlf_blkno == dqp->q_blkno); #ifdef DEBUG - qip->qli_push_owner = get_thread_id(); + qip->qli_push_owner = current_pid(); #endif /* * The dquot is left locked. diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c index bb6991a..7dcdd06 100644 --- a/fs/xfs/quota/xfs_qm.c +++ b/fs/xfs/quota/xfs_qm.c @@ -1392,11 +1392,12 @@ xfs_qm_qino_alloc( { xfs_trans_t *tp; int error; - unsigned long s; + unsigned long s; cred_t zerocr; + xfs_inode_t zeroino; int committed; - tp = xfs_trans_alloc(mp,XFS_TRANS_QM_QINOCREATE); + tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); if ((error = xfs_trans_reserve(tp, XFS_QM_QINOCREATE_SPACE_RES(mp), XFS_CREATE_LOG_RES(mp), 0, @@ -1406,8 +1407,9 @@ xfs_qm_qino_alloc( return (error); } memset(&zerocr, 0, sizeof(zerocr)); + memset(&zeroino, 0, sizeof(zeroino)); - if ((error = xfs_dir_ialloc(&tp, mp->m_rootip, S_IFREG, 1, 0, + if ((error = xfs_dir_ialloc(&tp, &zeroino, S_IFREG, 1, 0, &zerocr, 0, 1, ip, &committed))) { xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT); @@ -1918,9 +1920,7 @@ xfs_qm_quotacheck( * at this point (because we intentionally didn't in dqget_noattach). */ if (error) { - xfs_qm_dqpurge_all(mp, - XFS_QMOPT_UQUOTA|XFS_QMOPT_GQUOTA| - XFS_QMOPT_PQUOTA|XFS_QMOPT_QUOTAOFF); + xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL | XFS_QMOPT_QUOTAOFF); goto error_return; } /* @@ -2743,6 +2743,7 @@ xfs_qm_vop_dqattach_and_dqmod_newinode( xfs_dqunlock(udqp); ASSERT(ip->i_udquot == NULL); ip->i_udquot = udqp; + ASSERT(XFS_IS_UQUOTA_ON(tp->t_mountp)); ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); } @@ -2752,7 +2753,10 @@ xfs_qm_vop_dqattach_and_dqmod_newinode( xfs_dqunlock(gdqp); ASSERT(ip->i_gdquot == NULL); ip->i_gdquot = gdqp; - ASSERT(ip->i_d.di_gid == be32_to_cpu(gdqp->q_core.d_id)); + ASSERT(XFS_IS_OQUOTA_ON(tp->t_mountp)); + ASSERT((XFS_IS_GQUOTA_ON(tp->t_mountp) ? + ip->i_d.di_gid : ip->i_d.di_projid) == + be32_to_cpu(gdqp->q_core.d_id)); xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); } } diff --git a/fs/xfs/support/debug.c b/fs/xfs/support/debug.c index bb6dc91..b08b3d9 100644 --- a/fs/xfs/support/debug.c +++ b/fs/xfs/support/debug.c @@ -27,45 +27,12 @@ static DEFINE_SPINLOCK(xfs_err_lock); /* Translate from CE_FOO to KERN_FOO, err_level(CE_FOO) == KERN_FOO */ #define XFS_MAX_ERR_LEVEL 7 #define XFS_ERR_MASK ((1 << 3) - 1) -static char *err_level[XFS_MAX_ERR_LEVEL+1] = +static const char * const err_level[XFS_MAX_ERR_LEVEL+1] = {KERN_EMERG, KERN_ALERT, KERN_CRIT, KERN_ERR, KERN_WARNING, KERN_NOTICE, KERN_INFO, KERN_DEBUG}; void -assfail(char *a, char *f, int l) -{ - printk("XFS assertion failed: %s, file: %s, line: %d\n", a, f, l); - BUG(); -} - -#if ((defined(DEBUG) || defined(INDUCE_IO_ERRROR)) && !defined(NO_WANT_RANDOM)) - -unsigned long -random(void) -{ - static unsigned long RandomValue = 1; - /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */ - register long rv = RandomValue; - register long lo; - register long hi; - - hi = rv / 127773; - lo = rv % 127773; - rv = 16807 * lo - 2836 * hi; - if( rv <= 0 ) rv += 2147483647; - return( RandomValue = rv ); -} - -int -get_thread_id(void) -{ - return current->pid; -} - -#endif /* DEBUG || INDUCE_IO_ERRROR || !NO_WANT_RANDOM */ - -void cmn_err(register int level, char *fmt, ...) { char *fp = fmt; @@ -90,7 +57,6 @@ cmn_err(register int level, char *fmt, ...) BUG(); } - void icmn_err(register int level, char *fmt, va_list ap) { @@ -109,3 +75,27 @@ icmn_err(register int level, char *fmt, va_list ap) if (level == CE_PANIC) BUG(); } + +void +assfail(char *expr, char *file, int line) +{ + printk("Assertion failed: %s, file: %s, line: %d\n", expr, file, line); + BUG(); +} + +#if ((defined(DEBUG) || defined(INDUCE_IO_ERRROR)) && !defined(NO_WANT_RANDOM)) +unsigned long random(void) +{ + static unsigned long RandomValue = 1; + /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */ + register long rv = RandomValue; + register long lo; + register long hi; + + hi = rv / 127773; + lo = rv % 127773; + rv = 16807 * lo - 2836 * hi; + if (rv <= 0) rv += 2147483647; + return RandomValue = rv; +} +#endif /* DEBUG || INDUCE_IO_ERRROR || !NO_WANT_RANDOM */ diff --git a/fs/xfs/support/debug.h b/fs/xfs/support/debug.h index aff5586..e3bf581 100644 --- a/fs/xfs/support/debug.h +++ b/fs/xfs/support/debug.h @@ -31,24 +31,23 @@ extern void icmn_err(int, char *, va_list) __attribute__ ((format (printf, 2, 0))); extern void cmn_err(int, char *, ...) __attribute__ ((format (printf, 2, 3))); +extern void assfail(char *expr, char *f, int l); -#ifndef STATIC -# define STATIC static -#endif +#define prdev(fmt,targ,args...) \ + printk("Device %s - " fmt "\n", XFS_BUFTARG_NAME(targ), ## args) -#ifdef DEBUG -# define ASSERT(EX) ((EX) ? ((void)0) : assfail(#EX, __FILE__, __LINE__)) -#else -# define ASSERT(x) ((void)0) -#endif +#define ASSERT_ALWAYS(expr) \ + (unlikely((expr) != 0) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) -extern void assfail(char *, char *, int); -#ifdef DEBUG +#ifndef DEBUG +# define ASSERT(expr) ((void)0) +#else +# define ASSERT(expr) ASSERT_ALWAYS(expr) extern unsigned long random(void); -extern int get_thread_id(void); #endif -#define ASSERT_ALWAYS(EX) ((EX)?((void)0):assfail(#EX, __FILE__, __LINE__)) -#define debug_stop_all_cpus(param) /* param is "cpumask_t *" */ +#ifndef STATIC +# define STATIC static +#endif #endif /* __XFS_SUPPORT_DEBUG_H__ */ diff --git a/fs/xfs/support/uuid.c b/fs/xfs/support/uuid.c index 69ec4f5..a3d565a 100644 --- a/fs/xfs/support/uuid.c +++ b/fs/xfs/support/uuid.c @@ -27,6 +27,16 @@ uuid_init(void) mutex_init(&uuid_monitor); } + +/* IRIX interpretation of an uuid_t */ +typedef struct { + __be32 uu_timelow; + __be16 uu_timemid; + __be16 uu_timehi; + __be16 uu_clockseq; + __be16 uu_node[3]; +} xfs_uu_t; + /* * uuid_getnodeuniq - obtain the node unique fields of a UUID. * @@ -36,16 +46,11 @@ uuid_init(void) void uuid_getnodeuniq(uuid_t *uuid, int fsid [2]) { - char *uu = (char *)uuid; - - /* on IRIX, this function assumes big-endian fields within - * the uuid, so we use INT_GET to get the same result on - * little-endian systems - */ + xfs_uu_t *uup = (xfs_uu_t *)uuid; - fsid[0] = (INT_GET(*(u_int16_t*)(uu+8), ARCH_CONVERT) << 16) + - INT_GET(*(u_int16_t*)(uu+4), ARCH_CONVERT); - fsid[1] = INT_GET(*(u_int32_t*)(uu ), ARCH_CONVERT); + fsid[0] = (be16_to_cpu(uup->uu_clockseq) << 16) | + be16_to_cpu(uup->uu_timemid); + fsid[1] = be16_to_cpu(uup->uu_timelow); } void diff --git a/fs/xfs/xfs_arch.h b/fs/xfs/xfs_arch.h index 68e5051..c483689 100644 --- a/fs/xfs/xfs_arch.h +++ b/fs/xfs/xfs_arch.h @@ -40,6 +40,22 @@ #undef XFS_NATIVE_HOST #endif +#ifdef XFS_NATIVE_HOST +#define cpu_to_be16(val) ((__be16)(val)) +#define cpu_to_be32(val) ((__be32)(val)) +#define cpu_to_be64(val) ((__be64)(val)) +#define be16_to_cpu(val) ((__uint16_t)(val)) +#define be32_to_cpu(val) ((__uint32_t)(val)) +#define be64_to_cpu(val) ((__uint64_t)(val)) +#else +#define cpu_to_be16(val) (__swab16((__uint16_t)(val))) +#define cpu_to_be32(val) (__swab32((__uint32_t)(val))) +#define cpu_to_be64(val) (__swab64((__uint64_t)(val))) +#define be16_to_cpu(val) (__swab16((__be16)(val))) +#define be32_to_cpu(val) (__swab32((__be32)(val))) +#define be64_to_cpu(val) (__swab64((__be64)(val))) +#endif + #endif /* __KERNEL__ */ /* do we need conversion? */ @@ -186,7 +202,7 @@ static inline void be64_add(__be64 *a, __s64 b) */ #define XFS_GET_DIR_INO4(di) \ - (((u32)(di).i[0] << 24) | ((di).i[1] << 16) | ((di).i[2] << 8) | ((di).i[3])) + (((__u32)(di).i[0] << 24) | ((di).i[1] << 16) | ((di).i[2] << 8) | ((di).i[3])) #define XFS_PUT_DIR_INO4(from, di) \ do { \ @@ -197,9 +213,9 @@ do { \ } while (0) #define XFS_DI_HI(di) \ - (((u32)(di).i[1] << 16) | ((di).i[2] << 8) | ((di).i[3])) + (((__u32)(di).i[1] << 16) | ((di).i[2] << 8) | ((di).i[3])) #define XFS_DI_LO(di) \ - (((u32)(di).i[4] << 24) | ((di).i[5] << 16) | ((di).i[6] << 8) | ((di).i[7])) + (((__u32)(di).i[4] << 24) | ((di).i[5] << 16) | ((di).i[6] << 8) | ((di).i[7])) #define XFS_GET_DIR_INO8(di) \ (((xfs_ino_t)XFS_DI_LO(di) & 0xffffffffULL) | \ diff --git a/fs/xfs/xfs_attr_leaf.c b/fs/xfs/xfs_attr_leaf.c index 1c74218..fe91eac 100644 --- a/fs/xfs/xfs_attr_leaf.c +++ b/fs/xfs/xfs_attr_leaf.c @@ -128,7 +128,7 @@ xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes) return (offset >= minforkoff) ? minforkoff : 0; } - if (unlikely(mp->m_flags & XFS_MOUNT_COMPAT_ATTR)) { + if (!(mp->m_flags & XFS_MOUNT_ATTR2)) { if (bytes <= XFS_IFORK_ASIZE(dp)) return mp->m_attroffset >> 3; return 0; @@ -157,7 +157,7 @@ xfs_sbversion_add_attr2(xfs_mount_t *mp, xfs_trans_t *tp) { unsigned long s; - if (!(mp->m_flags & XFS_MOUNT_COMPAT_ATTR) && + if ((mp->m_flags & XFS_MOUNT_ATTR2) && !(XFS_SB_VERSION_HASATTR2(&mp->m_sb))) { s = XFS_SB_LOCK(mp); if (!XFS_SB_VERSION_HASATTR2(&mp->m_sb)) { @@ -311,7 +311,7 @@ xfs_attr_shortform_remove(xfs_da_args_t *args) */ totsize -= size; if (totsize == sizeof(xfs_attr_sf_hdr_t) && !args->addname && - !(mp->m_flags & XFS_MOUNT_COMPAT_ATTR)) { + (mp->m_flags & XFS_MOUNT_ATTR2)) { /* * Last attribute now removed, revert to original * inode format making all literal area available @@ -330,7 +330,7 @@ xfs_attr_shortform_remove(xfs_da_args_t *args) dp->i_d.di_forkoff = xfs_attr_shortform_bytesfit(dp, totsize); ASSERT(dp->i_d.di_forkoff); ASSERT(totsize > sizeof(xfs_attr_sf_hdr_t) || args->addname || - (mp->m_flags & XFS_MOUNT_COMPAT_ATTR)); + !(mp->m_flags & XFS_MOUNT_ATTR2)); dp->i_afp->if_ext_max = XFS_IFORK_ASIZE(dp) / (uint)sizeof(xfs_bmbt_rec_t); dp->i_df.if_ext_max = @@ -739,7 +739,7 @@ xfs_attr_shortform_allfit(xfs_dabuf_t *bp, xfs_inode_t *dp) + name_loc->namelen + INT_GET(name_loc->valuelen, ARCH_CONVERT); } - if (!(dp->i_mount->m_flags & XFS_MOUNT_COMPAT_ATTR) && + if ((dp->i_mount->m_flags & XFS_MOUNT_ATTR2) && (bytes == sizeof(struct xfs_attr_sf_hdr))) return(-1); return(xfs_attr_shortform_bytesfit(dp, bytes)); @@ -778,7 +778,7 @@ xfs_attr_leaf_to_shortform(xfs_dabuf_t *bp, xfs_da_args_t *args, int forkoff) goto out; if (forkoff == -1) { - ASSERT(!(dp->i_mount->m_flags & XFS_MOUNT_COMPAT_ATTR)); + ASSERT(dp->i_mount->m_flags & XFS_MOUNT_ATTR2); /* * Last attribute was removed, revert to original diff --git a/fs/xfs/xfs_attr_leaf.h b/fs/xfs/xfs_attr_leaf.h index f6143ff..541e3410 100644 --- a/fs/xfs/xfs_attr_leaf.h +++ b/fs/xfs/xfs_attr_leaf.h @@ -63,7 +63,7 @@ struct xfs_trans; * the leaf_entry. The namespaces are independent only because we also look * at the namespace bit when we are looking for a matching attribute name. * - * We also store a "incomplete" bit in the leaf_entry. It shows that an + * We also store an "incomplete" bit in the leaf_entry. It shows that an * attribute is in the middle of being created and should not be shown to * the user if we crash during the time that the bit is set. We clear the * bit when we have finished setting up the attribute. We do this because @@ -72,42 +72,48 @@ struct xfs_trans; */ #define XFS_ATTR_LEAF_MAPSIZE 3 /* how many freespace slots */ +typedef struct xfs_attr_leaf_map { /* RLE map of free bytes */ + __uint16_t base; /* base of free region */ + __uint16_t size; /* length of free region */ +} xfs_attr_leaf_map_t; + +typedef struct xfs_attr_leaf_hdr { /* constant-structure header block */ + xfs_da_blkinfo_t info; /* block type, links, etc. */ + __uint16_t count; /* count of active leaf_entry's */ + __uint16_t usedbytes; /* num bytes of names/values stored */ + __uint16_t firstused; /* first used byte in name area */ + __uint8_t holes; /* != 0 if blk needs compaction */ + __uint8_t pad1; + xfs_attr_leaf_map_t freemap[XFS_ATTR_LEAF_MAPSIZE]; + /* N largest free regions */ +} xfs_attr_leaf_hdr_t; + +typedef struct xfs_attr_leaf_entry { /* sorted on key, not name */ + xfs_dahash_t hashval; /* hash value of name */ + __uint16_t nameidx; /* index into buffer of name/value */ + __uint8_t flags; /* LOCAL/ROOT/SECURE/INCOMPLETE flag */ + __uint8_t pad2; /* unused pad byte */ +} xfs_attr_leaf_entry_t; + +typedef struct xfs_attr_leaf_name_local { + __uint16_t valuelen; /* number of bytes in value */ + __uint8_t namelen; /* length of name bytes */ + __uint8_t nameval[1]; /* name/value bytes */ +} xfs_attr_leaf_name_local_t; + +typedef struct xfs_attr_leaf_name_remote { + xfs_dablk_t valueblk; /* block number of value bytes */ + __uint32_t valuelen; /* number of bytes in value */ + __uint8_t namelen; /* length of name bytes */ + __uint8_t name[1]; /* name bytes */ +} xfs_attr_leaf_name_remote_t; + typedef struct xfs_attr_leafblock { - struct xfs_attr_leaf_hdr { /* constant-structure header block */ - xfs_da_blkinfo_t info; /* block type, links, etc. */ - __uint16_t count; /* count of active leaf_entry's */ - __uint16_t usedbytes; /* num bytes of names/values stored */ - __uint16_t firstused; /* first used byte in name area */ - __uint8_t holes; /* != 0 if blk needs compaction */ - __uint8_t pad1; - struct xfs_attr_leaf_map { /* RLE map of free bytes */ - __uint16_t base; /* base of free region */ - __uint16_t size; /* length of free region */ - } freemap[XFS_ATTR_LEAF_MAPSIZE]; /* N largest free regions */ - } hdr; - struct xfs_attr_leaf_entry { /* sorted on key, not name */ - xfs_dahash_t hashval; /* hash value of name */ - __uint16_t nameidx; /* index into buffer of name/value */ - __uint8_t flags; /* LOCAL/ROOT/SECURE/INCOMPLETE flag */ - __uint8_t pad2; /* unused pad byte */ - } entries[1]; /* variable sized array */ - struct xfs_attr_leaf_name_local { - __uint16_t valuelen; /* number of bytes in value */ - __uint8_t namelen; /* length of name bytes */ - __uint8_t nameval[1]; /* name/value bytes */ - } namelist; /* grows from bottom of buf */ - struct xfs_attr_leaf_name_remote { - xfs_dablk_t valueblk; /* block number of value bytes */ - __uint32_t valuelen; /* number of bytes in value */ - __uint8_t namelen; /* length of name bytes */ - __uint8_t name[1]; /* name bytes */ - } valuelist; /* grows from bottom of buf */ + xfs_attr_leaf_hdr_t hdr; /* constant-structure header block */ + xfs_attr_leaf_entry_t entries[1]; /* sorted on key, not name */ + xfs_attr_leaf_name_local_t namelist; /* grows from bottom of buf */ + xfs_attr_leaf_name_remote_t valuelist; /* grows from bottom of buf */ } xfs_attr_leafblock_t; -typedef struct xfs_attr_leaf_hdr xfs_attr_leaf_hdr_t; -typedef struct xfs_attr_leaf_map xfs_attr_leaf_map_t; -typedef struct xfs_attr_leaf_entry xfs_attr_leaf_entry_t; -typedef struct xfs_attr_leaf_name_local xfs_attr_leaf_name_local_t; -typedef struct xfs_attr_leaf_name_remote xfs_attr_leaf_name_remote_t; /* * Flags used in the leaf_entry[i].flags field. @@ -150,7 +156,8 @@ xfs_attr_leaf_name_local(xfs_attr_leafblock_t *leafp, int idx) (leafp))[INT_GET((leafp)->entries[idx].nameidx, ARCH_CONVERT)]; } -#define XFS_ATTR_LEAF_NAME(leafp,idx) xfs_attr_leaf_name(leafp,idx) +#define XFS_ATTR_LEAF_NAME(leafp,idx) \ + xfs_attr_leaf_name(leafp,idx) static inline char *xfs_attr_leaf_name(xfs_attr_leafblock_t *leafp, int idx) { return (&((char *) diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index e415a46..70625e5 100644 --- a/fs/xfs/xfs_bmap.c +++ b/fs/xfs/xfs_bmap.c @@ -2146,13 +2146,176 @@ xfs_bmap_add_extent_hole_real( return 0; /* keep gcc quite */ } +/* + * Adjust the size of the new extent based on di_extsize and rt extsize. + */ +STATIC int +xfs_bmap_extsize_align( + xfs_mount_t *mp, + xfs_bmbt_irec_t *gotp, /* next extent pointer */ + xfs_bmbt_irec_t *prevp, /* previous extent pointer */ + xfs_extlen_t extsz, /* align to this extent size */ + int rt, /* is this a realtime inode? */ + int eof, /* is extent at end-of-file? */ + int delay, /* creating delalloc extent? */ + int convert, /* overwriting unwritten extent? */ + xfs_fileoff_t *offp, /* in/out: aligned offset */ + xfs_extlen_t *lenp) /* in/out: aligned length */ +{ + xfs_fileoff_t orig_off; /* original offset */ + xfs_extlen_t orig_alen; /* original length */ + xfs_fileoff_t orig_end; /* original off+len */ + xfs_fileoff_t nexto; /* next file offset */ + xfs_fileoff_t prevo; /* previous file offset */ + xfs_fileoff_t align_off; /* temp for offset */ + xfs_extlen_t align_alen; /* temp for length */ + xfs_extlen_t temp; /* temp for calculations */ + + if (convert) + return 0; + + orig_off = align_off = *offp; + orig_alen = align_alen = *lenp; + orig_end = orig_off + orig_alen; + + /* + * If this request overlaps an existing extent, then don't + * attempt to perform any additional alignment. + */ + if (!delay && !eof && + (orig_off >= gotp->br_startoff) && + (orig_end <= gotp->br_startoff + gotp->br_blockcount)) { + return 0; + } + + /* + * If the file offset is unaligned vs. the extent size + * we need to align it. This will be possible unless + * the file was previously written with a kernel that didn't + * perform this alignment, or if a truncate shot us in the + * foot. + */ + temp = do_mod(orig_off, extsz); + if (temp) { + align_alen += temp; + align_off -= temp; + } + /* + * Same adjustment for the end of the requested area. + */ + if ((temp = (align_alen % extsz))) { + align_alen += extsz - temp; + } + /* + * If the previous block overlaps with this proposed allocation + * then move the start forward without adjusting the length. + */ + if (prevp->br_startoff != NULLFILEOFF) { + if (prevp->br_startblock == HOLESTARTBLOCK) + prevo = prevp->br_startoff; + else + prevo = prevp->br_startoff + prevp->br_blockcount; + } else + prevo = 0; + if (align_off != orig_off && align_off < prevo) + align_off = prevo; + /* + * If the next block overlaps with this proposed allocation + * then move the start back without adjusting the length, + * but not before offset 0. + * This may of course make the start overlap previous block, + * and if we hit the offset 0 limit then the next block + * can still overlap too. + */ + if (!eof && gotp->br_startoff != NULLFILEOFF) { + if ((delay && gotp->br_startblock == HOLESTARTBLOCK) || + (!delay && gotp->br_startblock == DELAYSTARTBLOCK)) + nexto = gotp->br_startoff + gotp->br_blockcount; + else + nexto = gotp->br_startoff; + } else + nexto = NULLFILEOFF; + if (!eof && + align_off + align_alen != orig_end && + align_off + align_alen > nexto) + align_off = nexto > align_alen ? nexto - align_alen : 0; + /* + * If we're now overlapping the next or previous extent that + * means we can't fit an extsz piece in this hole. Just move + * the start forward to the first valid spot and set + * the length so we hit the end. + */ + if (align_off != orig_off && align_off < prevo) + align_off = prevo; + if (align_off + align_alen != orig_end && + align_off + align_alen > nexto && + nexto != NULLFILEOFF) { + ASSERT(nexto > prevo); + align_alen = nexto - align_off; + } + + /* + * If realtime, and the result isn't a multiple of the realtime + * extent size we need to remove blocks until it is. + */ + if (rt && (temp = (align_alen % mp->m_sb.sb_rextsize))) { + /* + * We're not covering the original request, or + * we won't be able to once we fix the length. + */ + if (orig_off < align_off || + orig_end > align_off + align_alen || + align_alen - temp < orig_alen) + return XFS_ERROR(EINVAL); + /* + * Try to fix it by moving the start up. + */ + if (align_off + temp <= orig_off) { + align_alen -= temp; + align_off += temp; + } + /* + * Try to fix it by moving the end in. + */ + else if (align_off + align_alen - temp >= orig_end) + align_alen -= temp; + /* + * Set the start to the minimum then trim the length. + */ + else { + align_alen -= orig_off - align_off; + align_off = orig_off; + align_alen -= align_alen % mp->m_sb.sb_rextsize; + } + /* + * Result doesn't cover the request, fail it. + */ + if (orig_off < align_off || orig_end > align_off + align_alen) + return XFS_ERROR(EINVAL); + } else { + ASSERT(orig_off >= align_off); + ASSERT(orig_end <= align_off + align_alen); + } + +#ifdef DEBUG + if (!eof && gotp->br_startoff != NULLFILEOFF) + ASSERT(align_off + align_alen <= gotp->br_startoff); + if (prevp->br_startoff != NULLFILEOFF) + ASSERT(align_off >= prevp->br_startoff + prevp->br_blockcount); +#endif + + *lenp = align_alen; + *offp = align_off; + return 0; +} + #define XFS_ALLOC_GAP_UNITS 4 /* * xfs_bmap_alloc is called by xfs_bmapi to allocate an extent for a file. * It figures out where to ask the underlying allocator to put the new extent. */ -STATIC int /* error */ +STATIC int xfs_bmap_alloc( xfs_bmalloca_t *ap) /* bmap alloc argument struct */ { @@ -2163,10 +2326,10 @@ xfs_bmap_alloc( xfs_mount_t *mp; /* mount point structure */ int nullfb; /* true if ap->firstblock isn't set */ int rt; /* true if inode is realtime */ -#ifdef __KERNEL__ - xfs_extlen_t prod=0; /* product factor for allocators */ - xfs_extlen_t ralen=0; /* realtime allocation length */ -#endif + xfs_extlen_t prod = 0; /* product factor for allocators */ + xfs_extlen_t ralen = 0; /* realtime allocation length */ + xfs_extlen_t align; /* minimum allocation alignment */ + xfs_rtblock_t rtx; #define ISVALID(x,y) \ (rt ? \ @@ -2182,125 +2345,25 @@ xfs_bmap_alloc( nullfb = ap->firstblock == NULLFSBLOCK; rt = XFS_IS_REALTIME_INODE(ap->ip) && ap->userdata; fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, ap->firstblock); -#ifdef __KERNEL__ if (rt) { - xfs_extlen_t extsz; /* file extent size for rt */ - xfs_fileoff_t nexto; /* next file offset */ - xfs_extlen_t orig_alen; /* original ap->alen */ - xfs_fileoff_t orig_end; /* original off+len */ - xfs_fileoff_t orig_off; /* original ap->off */ - xfs_extlen_t mod_off; /* modulus calculations */ - xfs_fileoff_t prevo; /* previous file offset */ - xfs_rtblock_t rtx; /* realtime extent number */ - xfs_extlen_t temp; /* temp for rt calculations */ - - /* - * Set prod to match the realtime extent size. - */ - if (!(extsz = ap->ip->i_d.di_extsize)) - extsz = mp->m_sb.sb_rextsize; - prod = extsz / mp->m_sb.sb_rextsize; - orig_off = ap->off; - orig_alen = ap->alen; - orig_end = orig_off + orig_alen; - /* - * If the file offset is unaligned vs. the extent size - * we need to align it. This will be possible unless - * the file was previously written with a kernel that didn't - * perform this alignment. - */ - mod_off = do_mod(orig_off, extsz); - if (mod_off) { - ap->alen += mod_off; - ap->off -= mod_off; - } - /* - * Same adjustment for the end of the requested area. - */ - if ((temp = (ap->alen % extsz))) - ap->alen += extsz - temp; - /* - * If the previous block overlaps with this proposed allocation - * then move the start forward without adjusting the length. - */ - prevo = - ap->prevp->br_startoff == NULLFILEOFF ? - 0 : - (ap->prevp->br_startoff + - ap->prevp->br_blockcount); - if (ap->off != orig_off && ap->off < prevo) - ap->off = prevo; - /* - * If the next block overlaps with this proposed allocation - * then move the start back without adjusting the length, - * but not before offset 0. - * This may of course make the start overlap previous block, - * and if we hit the offset 0 limit then the next block - * can still overlap too. - */ - nexto = (ap->eof || ap->gotp->br_startoff == NULLFILEOFF) ? - NULLFILEOFF : ap->gotp->br_startoff; - if (!ap->eof && - ap->off + ap->alen != orig_end && - ap->off + ap->alen > nexto) - ap->off = nexto > ap->alen ? nexto - ap->alen : 0; - /* - * If we're now overlapping the next or previous extent that - * means we can't fit an extsz piece in this hole. Just move - * the start forward to the first valid spot and set - * the length so we hit the end. - */ - if ((ap->off != orig_off && ap->off < prevo) || - (ap->off + ap->alen != orig_end && - ap->off + ap->alen > nexto)) { - ap->off = prevo; - ap->alen = nexto - prevo; - } - /* - * If the result isn't a multiple of rtextents we need to - * remove blocks until it is. - */ - if ((temp = (ap->alen % mp->m_sb.sb_rextsize))) { - /* - * We're not covering the original request, or - * we won't be able to once we fix the length. - */ - if (orig_off < ap->off || - orig_end > ap->off + ap->alen || - ap->alen - temp < orig_alen) - return XFS_ERROR(EINVAL); - /* - * Try to fix it by moving the start up. - */ - if (ap->off + temp <= orig_off) { - ap->alen -= temp; - ap->off += temp; - } - /* - * Try to fix it by moving the end in. - */ - else if (ap->off + ap->alen - temp >= orig_end) - ap->alen -= temp; - /* - * Set the start to the minimum then trim the length. - */ - else { - ap->alen -= orig_off - ap->off; - ap->off = orig_off; - ap->alen -= ap->alen % mp->m_sb.sb_rextsize; - } - /* - * Result doesn't cover the request, fail it. - */ - if (orig_off < ap->off || orig_end > ap->off + ap->alen) - return XFS_ERROR(EINVAL); - } + align = ap->ip->i_d.di_extsize ? + ap->ip->i_d.di_extsize : mp->m_sb.sb_rextsize; + /* Set prod to match the extent size */ + prod = align / mp->m_sb.sb_rextsize; + + error = xfs_bmap_extsize_align(mp, ap->gotp, ap->prevp, + align, rt, ap->eof, 0, + ap->conv, &ap->off, &ap->alen); + if (error) + return error; + ASSERT(ap->alen); ASSERT(ap->alen % mp->m_sb.sb_rextsize == 0); + /* * If the offset & length are not perfectly aligned * then kill prod, it will just get us in trouble. */ - if (do_mod(ap->off, extsz) || ap->alen % extsz) + if (do_mod(ap->off, align) || ap->alen % align) prod = 1; /* * Set ralen to be the actual requested length in rtextents. @@ -2326,15 +2389,24 @@ xfs_bmap_alloc( ap->rval = rtx * mp->m_sb.sb_rextsize; } else ap->rval = 0; + } else { + align = (ap->userdata && ap->ip->i_d.di_extsize && + (ap->ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE)) ? + ap->ip->i_d.di_extsize : 0; + if (unlikely(align)) { + error = xfs_bmap_extsize_align(mp, ap->gotp, ap->prevp, + align, rt, + ap->eof, 0, ap->conv, + &ap->off, &ap->alen); + ASSERT(!error); + ASSERT(ap->alen); + } + if (nullfb) + ap->rval = XFS_INO_TO_FSB(mp, ap->ip->i_ino); + else + ap->rval = ap->firstblock; } -#else - if (rt) - ap->rval = 0; -#endif /* __KERNEL__ */ - else if (nullfb) - ap->rval = XFS_INO_TO_FSB(mp, ap->ip->i_ino); - else - ap->rval = ap->firstblock; + /* * If allocating at eof, and there's a previous real block, * try to use it's last block as our starting point. @@ -2598,11 +2670,12 @@ xfs_bmap_alloc( args.total = ap->total; args.minlen = ap->minlen; } - if (ap->ip->i_d.di_extsize) { + if (unlikely(ap->userdata && ap->ip->i_d.di_extsize && + (ap->ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE))) { args.prod = ap->ip->i_d.di_extsize; if ((args.mod = (xfs_extlen_t)do_mod(ap->off, args.prod))) args.mod = (xfs_extlen_t)(args.prod - args.mod); - } else if (mp->m_sb.sb_blocksize >= NBPP) { + } else if (unlikely(mp->m_sb.sb_blocksize >= NBPP)) { args.prod = 1; args.mod = 0; } else { @@ -3580,14 +3653,16 @@ xfs_bmap_search_extents( ep = xfs_bmap_do_search_extents(base, lastx, nextents, bno, eofp, lastxp, gotp, prevp); - rt = ip->i_d.di_flags & XFS_DIFLAG_REALTIME; - if(!rt && !gotp->br_startblock && (*lastxp != NULLEXTNUM)) { + rt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip); + if (unlikely(!rt && !gotp->br_startblock && (*lastxp != NULLEXTNUM))) { cmn_err(CE_PANIC,"Access to block zero: fs: <%s> inode: %lld " "start_block : %llx start_off : %llx blkcnt : %llx " "extent-state : %x \n", - (ip->i_mount)->m_fsname,(long long)ip->i_ino, - gotp->br_startblock, gotp->br_startoff, - gotp->br_blockcount,gotp->br_state); + (ip->i_mount)->m_fsname, (long long)ip->i_ino, + (unsigned long long)gotp->br_startblock, + (unsigned long long)gotp->br_startoff, + (unsigned long long)gotp->br_blockcount, + gotp->br_state); } return ep; } @@ -3875,7 +3950,7 @@ xfs_bmap_add_attrfork( ip->i_d.di_forkoff = xfs_attr_shortform_bytesfit(ip, size); if (!ip->i_d.di_forkoff) ip->i_d.di_forkoff = mp->m_attroffset >> 3; - else if (!(mp->m_flags & XFS_MOUNT_COMPAT_ATTR)) + else if (mp->m_flags & XFS_MOUNT_ATTR2) version = 2; break; default: @@ -4023,13 +4098,13 @@ xfs_bmap_compute_maxlevels( */ if (whichfork == XFS_DATA_FORK) { maxleafents = MAXEXTNUM; - sz = (mp->m_flags & XFS_MOUNT_COMPAT_ATTR) ? - mp->m_attroffset : XFS_BMDR_SPACE_CALC(MINDBTPTRS); + sz = (mp->m_flags & XFS_MOUNT_ATTR2) ? + XFS_BMDR_SPACE_CALC(MINDBTPTRS) : mp->m_attroffset; } else { maxleafents = MAXAEXTNUM; - sz = (mp->m_flags & XFS_MOUNT_COMPAT_ATTR) ? - mp->m_sb.sb_inodesize - mp->m_attroffset : - XFS_BMDR_SPACE_CALC(MINABTPTRS); + sz = (mp->m_flags & XFS_MOUNT_ATTR2) ? + XFS_BMDR_SPACE_CALC(MINABTPTRS) : + mp->m_sb.sb_inodesize - mp->m_attroffset; } maxrootrecs = (int)XFS_BTREE_BLOCK_MAXRECS(sz, xfs_bmdr, 0); minleafrecs = mp->m_bmap_dmnr[0]; @@ -4418,8 +4493,8 @@ xfs_bmap_read_extents( num_recs = be16_to_cpu(block->bb_numrecs); if (unlikely(i + num_recs > room)) { ASSERT(i + num_recs <= room); - xfs_fs_cmn_err(CE_WARN, ip->i_mount, - "corrupt dinode %Lu, (btree extents). Unmount and run xfs_repair.", + xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount, + "corrupt dinode %Lu, (btree extents).", (unsigned long long) ip->i_ino); XFS_ERROR_REPORT("xfs_bmap_read_extents(1)", XFS_ERRLEVEL_LOW, @@ -4590,6 +4665,7 @@ xfs_bmapi( char contig; /* allocation must be one extent */ char delay; /* this request is for delayed alloc */ char exact; /* don't do all of wasdelayed extent */ + char convert; /* unwritten extent I/O completion */ xfs_bmbt_rec_t *ep; /* extent list entry pointer */ int error; /* error return */ xfs_bmbt_irec_t got; /* current extent list record */ @@ -4643,7 +4719,7 @@ xfs_bmapi( } if (XFS_FORCED_SHUTDOWN(mp)) return XFS_ERROR(EIO); - rt = XFS_IS_REALTIME_INODE(ip); + rt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip); ifp = XFS_IFORK_PTR(ip, whichfork); ASSERT(ifp->if_ext_max == XFS_IFORK_SIZE(ip, whichfork) / (uint)sizeof(xfs_bmbt_rec_t)); @@ -4654,6 +4730,7 @@ xfs_bmapi( delay = (flags & XFS_BMAPI_DELAY) != 0; trim = (flags & XFS_BMAPI_ENTIRE) == 0; userdata = (flags & XFS_BMAPI_METADATA) == 0; + convert = (flags & XFS_BMAPI_CONVERT) != 0; exact = (flags & XFS_BMAPI_EXACT) != 0; rsvd = (flags & XFS_BMAPI_RSVBLOCKS) != 0; contig = (flags & XFS_BMAPI_CONTIG) != 0; @@ -4748,15 +4825,25 @@ xfs_bmapi( } minlen = contig ? alen : 1; if (delay) { - xfs_extlen_t extsz = 0; + xfs_extlen_t extsz; /* Figure out the extent size, adjust alen */ if (rt) { if (!(extsz = ip->i_d.di_extsize)) extsz = mp->m_sb.sb_rextsize; - alen = roundup(alen, extsz); - extsz = alen / mp->m_sb.sb_rextsize; + } else { + extsz = ip->i_d.di_extsize; } + if (extsz) { + error = xfs_bmap_extsize_align(mp, + &got, &prev, extsz, + rt, eof, delay, convert, + &aoff, &alen); + ASSERT(!error); + } + + if (rt) + extsz = alen / mp->m_sb.sb_rextsize; /* * Make a transaction-less quota reservation for @@ -4785,32 +4872,33 @@ xfs_bmapi( xfs_bmap_worst_indlen(ip, alen); ASSERT(indlen > 0); - if (rt) + if (rt) { error = xfs_mod_incore_sb(mp, XFS_SBS_FREXTENTS, -(extsz), rsvd); - else + } else { error = xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, -(alen), rsvd); + } if (!error) { error = xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, -(indlen), rsvd); - if (error && rt) { - xfs_mod_incore_sb(ip->i_mount, + if (error && rt) + xfs_mod_incore_sb(mp, XFS_SBS_FREXTENTS, extsz, rsvd); - } else if (error) { - xfs_mod_incore_sb(ip->i_mount, + else if (error) + xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, alen, rsvd); - } } if (error) { - if (XFS_IS_QUOTA_ON(ip->i_mount)) + if (XFS_IS_QUOTA_ON(mp)) /* unreserve the blocks now */ + (void) XFS_TRANS_UNRESERVE_QUOTA_NBLKS( mp, NULL, ip, (long)alen, 0, rt ? @@ -4849,6 +4937,7 @@ xfs_bmapi( bma.firstblock = *firstblock; bma.alen = alen; bma.off = aoff; + bma.conv = convert; bma.wasdel = wasdelay; bma.minlen = minlen; bma.low = flist->xbf_low; @@ -5270,8 +5359,7 @@ xfs_bunmapi( return 0; } XFS_STATS_INC(xs_blk_unmap); - isrt = (whichfork == XFS_DATA_FORK) && - (ip->i_d.di_flags & XFS_DIFLAG_REALTIME); + isrt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip); start = bno; bno = start + len - 1; ep = xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got, @@ -5443,7 +5531,7 @@ xfs_bunmapi( } if (wasdel) { ASSERT(STARTBLOCKVAL(del.br_startblock) > 0); - /* Update realtim/data freespace, unreserve quota */ + /* Update realtime/data freespace, unreserve quota */ if (isrt) { xfs_filblks_t rtexts; @@ -5451,14 +5539,14 @@ xfs_bunmapi( do_div(rtexts, mp->m_sb.sb_rextsize); xfs_mod_incore_sb(mp, XFS_SBS_FREXTENTS, (int)rtexts, rsvd); - XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, NULL, ip, - -((long)del.br_blockcount), 0, + (void)XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, + NULL, ip, -((long)del.br_blockcount), 0, XFS_QMOPT_RES_RTBLKS); } else { xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, (int)del.br_blockcount, rsvd); - XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, NULL, ip, - -((long)del.br_blockcount), 0, + (void)XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, + NULL, ip, -((long)del.br_blockcount), 0, XFS_QMOPT_RES_REGBLKS); } ip->i_delayed_blks -= del.br_blockcount; @@ -5652,7 +5740,9 @@ xfs_getbmap( ip->i_d.di_format != XFS_DINODE_FMT_LOCAL) return XFS_ERROR(EINVAL); if (whichfork == XFS_DATA_FORK) { - if (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC) { + if ((ip->i_d.di_extsize && (ip->i_d.di_flags & + (XFS_DIFLAG_REALTIME|XFS_DIFLAG_EXTSIZE))) || + ip->i_d.di_flags & (XFS_DIFLAG_PREALLOC|XFS_DIFLAG_APPEND)){ prealloced = 1; fixlen = XFS_MAXIOFFSET(mp); } else { diff --git a/fs/xfs/xfs_bmap.h b/fs/xfs/xfs_bmap.h index 2e0717a..12cc63d 100644 --- a/fs/xfs/xfs_bmap.h +++ b/fs/xfs/xfs_bmap.h @@ -62,6 +62,10 @@ typedef struct xfs_bmap_free #define XFS_BMAPI_IGSTATE 0x200 /* Ignore state - */ /* combine contig. space */ #define XFS_BMAPI_CONTIG 0x400 /* must allocate only one extent */ +/* XFS_BMAPI_DIRECT_IO 0x800 */ +#define XFS_BMAPI_CONVERT 0x1000 /* unwritten extent conversion - */ + /* need write cache flushing and no */ + /* additional allocation alignments */ #define XFS_BMAPI_AFLAG(w) xfs_bmapi_aflag(w) static inline int xfs_bmapi_aflag(int w) @@ -101,7 +105,8 @@ typedef struct xfs_bmalloca { char wasdel; /* replacing a delayed allocation */ char userdata;/* set if is user data */ char low; /* low on space, using seq'l ags */ - char aeof; /* allocated space at eof */ + char aeof; /* allocated space at eof */ + char conv; /* overwriting unwritten extents */ } xfs_bmalloca_t; #ifdef __KERNEL__ diff --git a/fs/xfs/xfs_clnt.h b/fs/xfs/xfs_clnt.h index 328a528..f57cc9a 100644 --- a/fs/xfs/xfs_clnt.h +++ b/fs/xfs/xfs_clnt.h @@ -57,7 +57,7 @@ struct xfs_mount_args { /* * XFS mount option flags -- args->flags1 */ -#define XFSMNT_COMPAT_ATTR 0x00000001 /* do not use ATTR2 format */ +#define XFSMNT_ATTR2 0x00000001 /* allow ATTR2 EA format */ #define XFSMNT_WSYNC 0x00000002 /* safe mode nfs mount * compatible */ #define XFSMNT_INO64 0x00000004 /* move inode numbers up diff --git a/fs/xfs/xfs_dfrag.c b/fs/xfs/xfs_dfrag.c index 070259a..c6191d0 100644 --- a/fs/xfs/xfs_dfrag.c +++ b/fs/xfs/xfs_dfrag.c @@ -60,8 +60,6 @@ xfs_swapext( xfs_bstat_t *sbp; struct file *fp = NULL, *tfp = NULL; vnode_t *vp, *tvp; - bhv_desc_t *bdp, *tbdp; - vn_bhv_head_t *bhp, *tbhp; static uint lock_flags = XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL; int ilf_fields, tilf_fields; int error = 0; @@ -90,13 +88,10 @@ xfs_swapext( goto error0; } - bhp = VN_BHV_HEAD(vp); - bdp = vn_bhv_lookup(bhp, &xfs_vnodeops); - if (bdp == NULL) { + ip = xfs_vtoi(vp); + if (ip == NULL) { error = XFS_ERROR(EBADF); goto error0; - } else { - ip = XFS_BHVTOI(bdp); } if (((tfp = fget((int)sxp->sx_fdtmp)) == NULL) || @@ -105,13 +100,10 @@ xfs_swapext( goto error0; } - tbhp = VN_BHV_HEAD(tvp); - tbdp = vn_bhv_lookup(tbhp, &xfs_vnodeops); - if (tbdp == NULL) { + tip = xfs_vtoi(tvp); + if (tip == NULL) { error = XFS_ERROR(EBADF); goto error0; - } else { - tip = XFS_BHVTOI(tbdp); } if (ip->i_mount != tip->i_mount) { diff --git a/fs/xfs/xfs_dinode.h b/fs/xfs/xfs_dinode.h index c5a0e53..79d0d9e 100644 --- a/fs/xfs/xfs_dinode.h +++ b/fs/xfs/xfs_dinode.h @@ -199,10 +199,16 @@ typedef enum xfs_dinode_fmt #define XFS_DFORK_DSIZE(dip,mp) \ XFS_CFORK_DSIZE_DISK(&(dip)->di_core, mp) +#define XFS_DFORK_DSIZE_HOST(dip,mp) \ + XFS_CFORK_DSIZE(&(dip)->di_core, mp) #define XFS_DFORK_ASIZE(dip,mp) \ XFS_CFORK_ASIZE_DISK(&(dip)->di_core, mp) +#define XFS_DFORK_ASIZE_HOST(dip,mp) \ + XFS_CFORK_ASIZE(&(dip)->di_core, mp) #define XFS_DFORK_SIZE(dip,mp,w) \ XFS_CFORK_SIZE_DISK(&(dip)->di_core, mp, w) +#define XFS_DFORK_SIZE_HOST(dip,mp,w) \ + XFS_CFORK_SIZE(&(dip)->di_core, mp, w) #define XFS_DFORK_Q(dip) XFS_CFORK_Q_DISK(&(dip)->di_core) #define XFS_DFORK_BOFF(dip) XFS_CFORK_BOFF_DISK(&(dip)->di_core) @@ -216,6 +222,7 @@ typedef enum xfs_dinode_fmt #define XFS_CFORK_FMT_SET(dcp,w,n) \ ((w) == XFS_DATA_FORK ? \ ((dcp)->di_format = (n)) : ((dcp)->di_aformat = (n))) +#define XFS_DFORK_FORMAT(dip,w) XFS_CFORK_FORMAT(&(dip)->di_core, w) #define XFS_CFORK_NEXTENTS_DISK(dcp,w) \ ((w) == XFS_DATA_FORK ? \ @@ -223,13 +230,13 @@ typedef enum xfs_dinode_fmt INT_GET((dcp)->di_anextents, ARCH_CONVERT)) #define XFS_CFORK_NEXTENTS(dcp,w) \ ((w) == XFS_DATA_FORK ? (dcp)->di_nextents : (dcp)->di_anextents) +#define XFS_DFORK_NEXTENTS(dip,w) XFS_CFORK_NEXTENTS_DISK(&(dip)->di_core, w) +#define XFS_DFORK_NEXTENTS_HOST(dip,w) XFS_CFORK_NEXTENTS(&(dip)->di_core, w) #define XFS_CFORK_NEXT_SET(dcp,w,n) \ ((w) == XFS_DATA_FORK ? \ ((dcp)->di_nextents = (n)) : ((dcp)->di_anextents = (n))) -#define XFS_DFORK_NEXTENTS(dip,w) XFS_CFORK_NEXTENTS_DISK(&(dip)->di_core, w) - #define XFS_BUF_TO_DINODE(bp) ((xfs_dinode_t *)XFS_BUF_PTR(bp)) /* @@ -246,8 +253,10 @@ typedef enum xfs_dinode_fmt #define XFS_DIFLAG_NOATIME_BIT 6 /* do not update atime */ #define XFS_DIFLAG_NODUMP_BIT 7 /* do not dump */ #define XFS_DIFLAG_RTINHERIT_BIT 8 /* create with realtime bit set */ -#define XFS_DIFLAG_PROJINHERIT_BIT 9 /* create with parents projid */ -#define XFS_DIFLAG_NOSYMLINKS_BIT 10 /* disallow symlink creation */ +#define XFS_DIFLAG_PROJINHERIT_BIT 9 /* create with parents projid */ +#define XFS_DIFLAG_NOSYMLINKS_BIT 10 /* disallow symlink creation */ +#define XFS_DIFLAG_EXTSIZE_BIT 11 /* inode extent size allocator hint */ +#define XFS_DIFLAG_EXTSZINHERIT_BIT 12 /* inherit inode extent size */ #define XFS_DIFLAG_REALTIME (1 << XFS_DIFLAG_REALTIME_BIT) #define XFS_DIFLAG_PREALLOC (1 << XFS_DIFLAG_PREALLOC_BIT) #define XFS_DIFLAG_NEWRTBM (1 << XFS_DIFLAG_NEWRTBM_BIT) @@ -259,11 +268,14 @@ typedef enum xfs_dinode_fmt #define XFS_DIFLAG_RTINHERIT (1 << XFS_DIFLAG_RTINHERIT_BIT) #define XFS_DIFLAG_PROJINHERIT (1 << XFS_DIFLAG_PROJINHERIT_BIT) #define XFS_DIFLAG_NOSYMLINKS (1 << XFS_DIFLAG_NOSYMLINKS_BIT) +#define XFS_DIFLAG_EXTSIZE (1 << XFS_DIFLAG_EXTSIZE_BIT) +#define XFS_DIFLAG_EXTSZINHERIT (1 << XFS_DIFLAG_EXTSZINHERIT_BIT) #define XFS_DIFLAG_ANY \ (XFS_DIFLAG_REALTIME | XFS_DIFLAG_PREALLOC | XFS_DIFLAG_NEWRTBM | \ XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND | XFS_DIFLAG_SYNC | \ XFS_DIFLAG_NOATIME | XFS_DIFLAG_NODUMP | XFS_DIFLAG_RTINHERIT | \ - XFS_DIFLAG_PROJINHERIT | XFS_DIFLAG_NOSYMLINKS) + XFS_DIFLAG_PROJINHERIT | XFS_DIFLAG_NOSYMLINKS | XFS_DIFLAG_EXTSIZE | \ + XFS_DIFLAG_EXTSZINHERIT) #endif /* __XFS_DINODE_H__ */ diff --git a/fs/xfs/xfs_dir.c b/fs/xfs/xfs_dir.c index 3dd3039..bb87d2a 100644 --- a/fs/xfs/xfs_dir.c +++ b/fs/xfs/xfs_dir.c @@ -176,7 +176,7 @@ xfs_dir_mount(xfs_mount_t *mp) uint shortcount, leafcount, count; mp->m_dirversion = 1; - if (mp->m_flags & XFS_MOUNT_COMPAT_ATTR) { + if (!(mp->m_flags & XFS_MOUNT_ATTR2)) { shortcount = (mp->m_attroffset - (uint)sizeof(xfs_dir_sf_hdr_t)) / (uint)sizeof(xfs_dir_sf_entry_t); diff --git a/fs/xfs/xfs_dir.h b/fs/xfs/xfs_dir.h index 488defe..8cc8afb 100644 --- a/fs/xfs/xfs_dir.h +++ b/fs/xfs/xfs_dir.h @@ -135,6 +135,8 @@ void xfs_dir_startup(void); /* called exactly once */ ((mp)->m_dirops.xd_shortform_to_single(args)) #define XFS_DIR_IS_V1(mp) ((mp)->m_dirversion == 1) +#define XFS_DIR_IS_V2(mp) ((mp)->m_dirversion == 2) extern xfs_dirops_t xfsv1_dirops; +extern xfs_dirops_t xfsv2_dirops; #endif /* __XFS_DIR_H__ */ diff --git a/fs/xfs/xfs_dir2.h b/fs/xfs/xfs_dir2.h index 7e24ffe..3158f5d 100644 --- a/fs/xfs/xfs_dir2.h +++ b/fs/xfs/xfs_dir2.h @@ -72,9 +72,6 @@ typedef struct xfs_dir2_put_args { struct uio *uio; /* uio control structure */ } xfs_dir2_put_args_t; -#define XFS_DIR_IS_V2(mp) ((mp)->m_dirversion == 2) -extern xfs_dirops_t xfsv2_dirops; - /* * Other interfaces used by the rest of the dir v2 code. */ diff --git a/fs/xfs/xfs_dir_leaf.h b/fs/xfs/xfs_dir_leaf.h index ab6b09e..eb8cd9a 100644 --- a/fs/xfs/xfs_dir_leaf.h +++ b/fs/xfs/xfs_dir_leaf.h @@ -67,34 +67,38 @@ struct xfs_trans; */ #define XFS_DIR_LEAF_MAPSIZE 3 /* how many freespace slots */ +typedef struct xfs_dir_leaf_map { /* RLE map of free bytes */ + __uint16_t base; /* base of free region */ + __uint16_t size; /* run length of free region */ +} xfs_dir_leaf_map_t; + +typedef struct xfs_dir_leaf_hdr { /* constant-structure header block */ + xfs_da_blkinfo_t info; /* block type, links, etc. */ + __uint16_t count; /* count of active leaf_entry's */ + __uint16_t namebytes; /* num bytes of name strings stored */ + __uint16_t firstused; /* first used byte in name area */ + __uint8_t holes; /* != 0 if blk needs compaction */ + __uint8_t pad1; + xfs_dir_leaf_map_t freemap[XFS_DIR_LEAF_MAPSIZE]; +} xfs_dir_leaf_hdr_t; + +typedef struct xfs_dir_leaf_entry { /* sorted on key, not name */ + xfs_dahash_t hashval; /* hash value of name */ + __uint16_t nameidx; /* index into buffer of name */ + __uint8_t namelen; /* length of name string */ + __uint8_t pad2; +} xfs_dir_leaf_entry_t; + +typedef struct xfs_dir_leaf_name { + xfs_dir_ino_t inumber; /* inode number for this key */ + __uint8_t name[1]; /* name string itself */ +} xfs_dir_leaf_name_t; + typedef struct xfs_dir_leafblock { - struct xfs_dir_leaf_hdr { /* constant-structure header block */ - xfs_da_blkinfo_t info; /* block type, links, etc. */ - __uint16_t count; /* count of active leaf_entry's */ - __uint16_t namebytes; /* num bytes of name strings stored */ - __uint16_t firstused; /* first used byte in name area */ - __uint8_t holes; /* != 0 if blk needs compaction */ - __uint8_t pad1; - struct xfs_dir_leaf_map {/* RLE map of free bytes */ - __uint16_t base; /* base of free region */ - __uint16_t size; /* run length of free region */ - } freemap[XFS_DIR_LEAF_MAPSIZE]; /* N largest free regions */ - } hdr; - struct xfs_dir_leaf_entry { /* sorted on key, not name */ - xfs_dahash_t hashval; /* hash value of name */ - __uint16_t nameidx; /* index into buffer of name */ - __uint8_t namelen; /* length of name string */ - __uint8_t pad2; - } entries[1]; /* var sized array */ - struct xfs_dir_leaf_name { - xfs_dir_ino_t inumber; /* inode number for this key */ - __uint8_t name[1]; /* name string itself */ - } namelist[1]; /* grows from bottom of buf */ + xfs_dir_leaf_hdr_t hdr; /* constant-structure header block */ + xfs_dir_leaf_entry_t entries[1]; /* var sized array */ + xfs_dir_leaf_name_t namelist[1]; /* grows from bottom of buf */ } xfs_dir_leafblock_t; -typedef struct xfs_dir_leaf_hdr xfs_dir_leaf_hdr_t; -typedef struct xfs_dir_leaf_map xfs_dir_leaf_map_t; -typedef struct xfs_dir_leaf_entry xfs_dir_leaf_entry_t; -typedef struct xfs_dir_leaf_name xfs_dir_leaf_name_t; /* * Length of name for which a 512-byte block filesystem @@ -126,11 +130,10 @@ typedef union { #define XFS_PUT_COOKIE(c,mp,bno,entry,hash) \ ((c).s.be = XFS_DA_MAKE_BNOENTRY(mp, bno, entry), (c).s.h = (hash)) -typedef struct xfs_dir_put_args -{ +typedef struct xfs_dir_put_args { xfs_dircook_t cook; /* cookie of (next) entry */ xfs_intino_t ino; /* inode number */ - struct xfs_dirent *dbp; /* buffer pointer */ + struct xfs_dirent *dbp; /* buffer pointer */ char *name; /* directory entry name */ int namelen; /* length of name */ int done; /* output: set if value was stored */ @@ -138,7 +141,8 @@ typedef struct xfs_dir_put_args struct uio *uio; /* uio control structure */ } xfs_dir_put_args_t; -#define XFS_DIR_LEAF_ENTSIZE_BYNAME(len) xfs_dir_leaf_entsize_byname(len) +#define XFS_DIR_LEAF_ENTSIZE_BYNAME(len) \ + xfs_dir_leaf_entsize_byname(len) static inline int xfs_dir_leaf_entsize_byname(int len) { return (uint)sizeof(xfs_dir_leaf_name_t)-1 + len; diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c index d7b6b5d..2a21c50 100644 --- a/fs/xfs/xfs_error.c +++ b/fs/xfs/xfs_error.c @@ -54,7 +54,6 @@ xfs_error_trap(int e) if (e != xfs_etrap[i]) continue; cmn_err(CE_NOTE, "xfs_error_trap: error %d", e); - debug_stop_all_cpus((void *)-1LL); BUG(); break; } diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h index 06d8a84..26b8e70 100644 --- a/fs/xfs/xfs_error.h +++ b/fs/xfs/xfs_error.h @@ -18,9 +18,6 @@ #ifndef __XFS_ERROR_H__ #define __XFS_ERROR_H__ -#define prdev(fmt,targ,args...) \ - printk("XFS: device %s - " fmt "\n", XFS_BUFTARG_NAME(targ), ## args) - #define XFS_ERECOVER 1 /* Failure to recover log */ #define XFS_ELOGSTAT 2 /* Failure to stat log in user space */ #define XFS_ENOLOGSPACE 3 /* Reservation too large */ @@ -182,8 +179,11 @@ extern int xfs_errortag_clearall_umount(int64_t fsid, char *fsname, int loud); struct xfs_mount; /* PRINTFLIKE4 */ extern void xfs_cmn_err(int panic_tag, int level, struct xfs_mount *mp, - char *fmt, ...); + char *fmt, ...); /* PRINTFLIKE3 */ extern void xfs_fs_cmn_err(int level, struct xfs_mount *mp, char *fmt, ...); +#define xfs_fs_repair_cmn_err(level, mp, fmt, args...) \ + xfs_fs_cmn_err(level, mp, fmt " Unmount and run xfs_repair.", ## args) + #endif /* __XFS_ERROR_H__ */ diff --git a/fs/xfs/xfs_fs.h b/fs/xfs/xfs_fs.h index ba096f8..14010f1 100644 --- a/fs/xfs/xfs_fs.h +++ b/fs/xfs/xfs_fs.h @@ -3,15 +3,15 @@ * All Rights Reserved. * * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. + * modify it under the terms of the GNU Lesser General Public License + * as published by the Free Software Foundation. * * This program is distributed in the hope that it would be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. + * GNU Lesser General Public License for more details. * - * You should have received a copy of the GNU General Public License + * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -65,6 +65,8 @@ struct fsxattr { #define XFS_XFLAG_RTINHERIT 0x00000100 /* create with rt bit set */ #define XFS_XFLAG_PROJINHERIT 0x00000200 /* create with parents projid */ #define XFS_XFLAG_NOSYMLINKS 0x00000400 /* disallow symlink creation */ +#define XFS_XFLAG_EXTSIZE 0x00000800 /* extent size allocator hint */ +#define XFS_XFLAG_EXTSZINHERIT 0x00001000 /* inherit inode extent size */ #define XFS_XFLAG_HASATTR 0x80000000 /* no DIFLAG for this */ /* diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c index d1236d6..163031c 100644 --- a/fs/xfs/xfs_fsops.c +++ b/fs/xfs/xfs_fsops.c @@ -540,6 +540,32 @@ xfs_reserve_blocks( return(0); } +void +xfs_fs_log_dummy(xfs_mount_t *mp) +{ + xfs_trans_t *tp; + xfs_inode_t *ip; + + + tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1); + atomic_inc(&mp->m_active_trans); + if (xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0)) { + xfs_trans_cancel(tp, 0); + return; + } + + ip = mp->m_rootip; + xfs_ilock(ip, XFS_ILOCK_EXCL); + + xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); + xfs_trans_ihold(tp, ip); + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + xfs_trans_set_sync(tp); + xfs_trans_commit(tp, 0, NULL); + + xfs_iunlock(ip, XFS_ILOCK_EXCL); +} + int xfs_fs_goingdown( xfs_mount_t *mp, diff --git a/fs/xfs/xfs_fsops.h b/fs/xfs/xfs_fsops.h index f32713f..300d0c9 100644 --- a/fs/xfs/xfs_fsops.h +++ b/fs/xfs/xfs_fsops.h @@ -25,5 +25,6 @@ extern int xfs_fs_counts(xfs_mount_t *mp, xfs_fsop_counts_t *cnt); extern int xfs_reserve_blocks(xfs_mount_t *mp, __uint64_t *inval, xfs_fsop_resblks_t *outval); extern int xfs_fs_goingdown(xfs_mount_t *mp, __uint32_t inflags); +extern void xfs_fs_log_dummy(xfs_mount_t *mp); #endif /* __XFS_FSOPS_H__ */ diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c index fc19eed..8e380a1 100644 --- a/fs/xfs/xfs_iget.c +++ b/fs/xfs/xfs_iget.c @@ -493,7 +493,6 @@ xfs_iget( retry: if ((inode = iget_locked(XFS_MTOVFS(mp)->vfs_super, ino))) { - bhv_desc_t *bdp; xfs_inode_t *ip; vp = LINVFS_GET_VP(inode); @@ -517,14 +516,12 @@ retry: * to wait for the inode to go away. */ if (is_bad_inode(inode) || - ((bdp = vn_bhv_lookup(VN_BHV_HEAD(vp), - &xfs_vnodeops)) == NULL)) { + ((ip = xfs_vtoi(vp)) == NULL)) { iput(inode); delay(1); goto retry; } - ip = XFS_BHVTOI(bdp); if (lock_flags != 0) xfs_ilock(ip, lock_flags); XFS_STATS_INC(xs_ig_found); diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index df0d457..1d7f5a7 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -404,9 +404,8 @@ xfs_iformat( INT_GET(dip->di_core.di_nextents, ARCH_CONVERT) + INT_GET(dip->di_core.di_anextents, ARCH_CONVERT) > INT_GET(dip->di_core.di_nblocks, ARCH_CONVERT))) { - xfs_fs_cmn_err(CE_WARN, ip->i_mount, - "corrupt dinode %Lu, extent total = %d, nblocks = %Lu." - " Unmount and run xfs_repair.", + xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount, + "corrupt dinode %Lu, extent total = %d, nblocks = %Lu.", (unsigned long long)ip->i_ino, (int)(INT_GET(dip->di_core.di_nextents, ARCH_CONVERT) + INT_GET(dip->di_core.di_anextents, ARCH_CONVERT)), @@ -418,9 +417,8 @@ xfs_iformat( } if (unlikely(INT_GET(dip->di_core.di_forkoff, ARCH_CONVERT) > ip->i_mount->m_sb.sb_inodesize)) { - xfs_fs_cmn_err(CE_WARN, ip->i_mount, - "corrupt dinode %Lu, forkoff = 0x%x." - " Unmount and run xfs_repair.", + xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount, + "corrupt dinode %Lu, forkoff = 0x%x.", (unsigned long long)ip->i_ino, (int)(INT_GET(dip->di_core.di_forkoff, ARCH_CONVERT))); XFS_CORRUPTION_ERROR("xfs_iformat(2)", XFS_ERRLEVEL_LOW, @@ -451,8 +449,9 @@ xfs_iformat( * no local regular files yet */ if (unlikely((INT_GET(dip->di_core.di_mode, ARCH_CONVERT) & S_IFMT) == S_IFREG)) { - xfs_fs_cmn_err(CE_WARN, ip->i_mount, - "corrupt inode (local format for regular file) %Lu. Unmount and run xfs_repair.", + xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount, + "corrupt inode %Lu " + "(local format for regular file).", (unsigned long long) ip->i_ino); XFS_CORRUPTION_ERROR("xfs_iformat(4)", XFS_ERRLEVEL_LOW, @@ -462,8 +461,9 @@ xfs_iformat( di_size = INT_GET(dip->di_core.di_size, ARCH_CONVERT); if (unlikely(di_size > XFS_DFORK_DSIZE(dip, ip->i_mount))) { - xfs_fs_cmn_err(CE_WARN, ip->i_mount, - "corrupt inode %Lu (bad size %Ld for local inode). Unmount and run xfs_repair.", + xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount, + "corrupt inode %Lu " + "(bad size %Ld for local inode).", (unsigned long long) ip->i_ino, (long long) di_size); XFS_CORRUPTION_ERROR("xfs_iformat(5)", @@ -551,8 +551,9 @@ xfs_iformat_local( * kmem_alloc() or memcpy() below. */ if (unlikely(size > XFS_DFORK_SIZE(dip, ip->i_mount, whichfork))) { - xfs_fs_cmn_err(CE_WARN, ip->i_mount, - "corrupt inode %Lu (bad size %d for local fork, size = %d). Unmount and run xfs_repair.", + xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount, + "corrupt inode %Lu " + "(bad size %d for local fork, size = %d).", (unsigned long long) ip->i_ino, size, XFS_DFORK_SIZE(dip, ip->i_mount, whichfork)); XFS_CORRUPTION_ERROR("xfs_iformat_local", XFS_ERRLEVEL_LOW, @@ -610,8 +611,8 @@ xfs_iformat_extents( * kmem_alloc() or memcpy() below. */ if (unlikely(size < 0 || size > XFS_DFORK_SIZE(dip, ip->i_mount, whichfork))) { - xfs_fs_cmn_err(CE_WARN, ip->i_mount, - "corrupt inode %Lu ((a)extents = %d). Unmount and run xfs_repair.", + xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount, + "corrupt inode %Lu ((a)extents = %d).", (unsigned long long) ip->i_ino, nex); XFS_CORRUPTION_ERROR("xfs_iformat_extents(1)", XFS_ERRLEVEL_LOW, ip->i_mount, dip); @@ -692,8 +693,8 @@ xfs_iformat_btree( || XFS_BMDR_SPACE_CALC(nrecs) > XFS_DFORK_SIZE(dip, ip->i_mount, whichfork) || XFS_IFORK_NEXTENTS(ip, whichfork) > ip->i_d.di_nblocks)) { - xfs_fs_cmn_err(CE_WARN, ip->i_mount, - "corrupt inode %Lu (btree). Unmount and run xfs_repair.", + xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount, + "corrupt inode %Lu (btree).", (unsigned long long) ip->i_ino); XFS_ERROR_REPORT("xfs_iformat_btree", XFS_ERRLEVEL_LOW, ip->i_mount); @@ -809,6 +810,10 @@ _xfs_dic2xflags( flags |= XFS_XFLAG_PROJINHERIT; if (di_flags & XFS_DIFLAG_NOSYMLINKS) flags |= XFS_XFLAG_NOSYMLINKS; + if (di_flags & XFS_DIFLAG_EXTSIZE) + flags |= XFS_XFLAG_EXTSIZE; + if (di_flags & XFS_DIFLAG_EXTSZINHERIT) + flags |= XFS_XFLAG_EXTSZINHERIT; } return flags; @@ -1192,11 +1197,19 @@ xfs_ialloc( if ((mode & S_IFMT) == S_IFDIR) { if (pip->i_d.di_flags & XFS_DIFLAG_RTINHERIT) di_flags |= XFS_DIFLAG_RTINHERIT; - } else { + if (pip->i_d.di_flags & XFS_DIFLAG_EXTSZINHERIT) { + di_flags |= XFS_DIFLAG_EXTSZINHERIT; + ip->i_d.di_extsize = pip->i_d.di_extsize; + } + } else if ((mode & S_IFMT) == S_IFREG) { if (pip->i_d.di_flags & XFS_DIFLAG_RTINHERIT) { di_flags |= XFS_DIFLAG_REALTIME; ip->i_iocore.io_flags |= XFS_IOCORE_RT; } + if (pip->i_d.di_flags & XFS_DIFLAG_EXTSZINHERIT) { + di_flags |= XFS_DIFLAG_EXTSIZE; + ip->i_d.di_extsize = pip->i_d.di_extsize; + } } if ((pip->i_d.di_flags & XFS_DIFLAG_NOATIME) && xfs_inherit_noatime) @@ -1262,7 +1275,7 @@ xfs_isize_check( if ((ip->i_d.di_mode & S_IFMT) != S_IFREG) return; - if ( ip->i_d.di_flags & XFS_DIFLAG_REALTIME ) + if (ip->i_d.di_flags & (XFS_DIFLAG_REALTIME | XFS_DIFLAG_EXTSIZE)) return; nimaps = 2; @@ -1765,22 +1778,19 @@ xfs_igrow_start( xfs_fsize_t new_size, cred_t *credp) { - xfs_fsize_t isize; int error; ASSERT(ismrlocked(&(ip->i_lock), MR_UPDATE) != 0); ASSERT(ismrlocked(&(ip->i_iolock), MR_UPDATE) != 0); ASSERT(new_size > ip->i_d.di_size); - error = 0; - isize = ip->i_d.di_size; /* * Zero any pages that may have been created by * xfs_write_file() beyond the end of the file * and any blocks between the old and new file sizes. */ - error = xfs_zero_eof(XFS_ITOV(ip), &ip->i_iocore, new_size, isize, - new_size); + error = xfs_zero_eof(XFS_ITOV(ip), &ip->i_iocore, new_size, + ip->i_d.di_size, new_size); return error; } @@ -3355,6 +3365,11 @@ xfs_iflush_int( ip->i_update_core = 0; SYNCHRONIZE(); + /* + * Make sure to get the latest atime from the Linux inode. + */ + xfs_synchronize_atime(ip); + if (XFS_TEST_ERROR(INT_GET(dip->di_core.di_magic,ARCH_CONVERT) != XFS_DINODE_MAGIC, mp, XFS_ERRTAG_IFLUSH_1, XFS_RANDOM_IFLUSH_1)) { xfs_cmn_err(XFS_PTAG_IFLUSH, CE_ALERT, mp, diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 124d30e..1cfbcf1 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -436,6 +436,10 @@ void xfs_ichgtime(xfs_inode_t *, int); xfs_fsize_t xfs_file_last_byte(xfs_inode_t *); void xfs_lock_inodes(xfs_inode_t **, int, int, uint); +xfs_inode_t *xfs_vtoi(struct vnode *vp); + +void xfs_synchronize_atime(xfs_inode_t *); + #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) #ifdef DEBUG diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c index 7f3363c..36aa1fc 100644 --- a/fs/xfs/xfs_inode_item.c +++ b/fs/xfs/xfs_inode_item.c @@ -271,6 +271,11 @@ xfs_inode_item_format( if (ip->i_update_size) ip->i_update_size = 0; + /* + * Make sure to get the latest atime from the Linux inode. + */ + xfs_synchronize_atime(ip); + vecp->i_addr = (xfs_caddr_t)&ip->i_d; vecp->i_len = sizeof(xfs_dinode_core_t); XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_ICORE); @@ -603,7 +608,7 @@ xfs_inode_item_trylock( if (iip->ili_pushbuf_flag == 0) { iip->ili_pushbuf_flag = 1; #ifdef DEBUG - iip->ili_push_owner = get_thread_id(); + iip->ili_push_owner = current_pid(); #endif /* * Inode is left locked in shared mode. @@ -782,7 +787,7 @@ xfs_inode_item_pushbuf( * trying to duplicate our effort. */ ASSERT(iip->ili_pushbuf_flag != 0); - ASSERT(iip->ili_push_owner == get_thread_id()); + ASSERT(iip->ili_push_owner == current_pid()); /* * If flushlock isn't locked anymore, chances are that the diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index ca7afc8..788917f3 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -262,7 +262,7 @@ phase2: case BMAPI_WRITE: /* If we found an extent, return it */ if (nimaps && - (imap.br_startblock != HOLESTARTBLOCK) && + (imap.br_startblock != HOLESTARTBLOCK) && (imap.br_startblock != DELAYSTARTBLOCK)) { xfs_iomap_map_trace(XFS_IOMAP_WRITE_MAP, io, offset, count, iomapp, &imap, flags); @@ -317,6 +317,58 @@ out: } STATIC int +xfs_iomap_eof_align_last_fsb( + xfs_mount_t *mp, + xfs_iocore_t *io, + xfs_fsize_t isize, + xfs_extlen_t extsize, + xfs_fileoff_t *last_fsb) +{ + xfs_fileoff_t new_last_fsb = 0; + xfs_extlen_t align; + int eof, error; + + if (io->io_flags & XFS_IOCORE_RT) + ; + /* + * If mounted with the "-o swalloc" option, roundup the allocation + * request to a stripe width boundary if the file size is >= + * stripe width and we are allocating past the allocation eof. + */ + else if (mp->m_swidth && (mp->m_flags & XFS_MOUNT_SWALLOC) && + (isize >= XFS_FSB_TO_B(mp, mp->m_swidth))) + new_last_fsb = roundup_64(*last_fsb, mp->m_swidth); + /* + * Roundup the allocation request to a stripe unit (m_dalign) boundary + * if the file size is >= stripe unit size, and we are allocating past + * the allocation eof. + */ + else if (mp->m_dalign && (isize >= XFS_FSB_TO_B(mp, mp->m_dalign))) + new_last_fsb = roundup_64(*last_fsb, mp->m_dalign); + + /* + * Always round up the allocation request to an extent boundary + * (when file on a real-time subvolume or has di_extsize hint). + */ + if (extsize) { + if (new_last_fsb) + align = roundup_64(new_last_fsb, extsize); + else + align = extsize; + new_last_fsb = roundup_64(*last_fsb, align); + } + + if (new_last_fsb) { + error = XFS_BMAP_EOF(mp, io, new_last_fsb, XFS_DATA_FORK, &eof); + if (error) + return error; + if (eof) + *last_fsb = new_last_fsb; + } + return 0; +} + +STATIC int xfs_flush_space( xfs_inode_t *ip, int *fsynced, @@ -362,19 +414,20 @@ xfs_iomap_write_direct( xfs_iocore_t *io = &ip->i_iocore; xfs_fileoff_t offset_fsb; xfs_fileoff_t last_fsb; - xfs_filblks_t count_fsb; + xfs_filblks_t count_fsb, resaligned; xfs_fsblock_t firstfsb; + xfs_extlen_t extsz, temp; + xfs_fsize_t isize; int nimaps; - int error; int bmapi_flag; int quota_flag; int rt; xfs_trans_t *tp; xfs_bmbt_irec_t imap; xfs_bmap_free_t free_list; - xfs_filblks_t qblocks, resblks; + uint qblocks, resblks, resrtextents; int committed; - int resrtextents; + int error; /* * Make sure that the dquots are there. This doesn't hold @@ -384,37 +437,52 @@ xfs_iomap_write_direct( if (error) return XFS_ERROR(error); - offset_fsb = XFS_B_TO_FSBT(mp, offset); - last_fsb = XFS_B_TO_FSB(mp, ((xfs_ufsize_t)(offset + count))); - count_fsb = last_fsb - offset_fsb; - if (found && (ret_imap->br_startblock == HOLESTARTBLOCK)) { - xfs_fileoff_t map_last_fsb; - - map_last_fsb = ret_imap->br_blockcount + ret_imap->br_startoff; - if (map_last_fsb < last_fsb) { - last_fsb = map_last_fsb; - count_fsb = last_fsb - offset_fsb; - } - ASSERT(count_fsb > 0); + rt = XFS_IS_REALTIME_INODE(ip); + if (unlikely(rt)) { + if (!(extsz = ip->i_d.di_extsize)) + extsz = mp->m_sb.sb_rextsize; + } else { + extsz = ip->i_d.di_extsize; } - /* - * Determine if reserving space on the data or realtime partition. - */ - if ((rt = XFS_IS_REALTIME_INODE(ip))) { - xfs_extlen_t extsz; + isize = ip->i_d.di_size; + if (io->io_new_size > isize) + isize = io->io_new_size; - if (!(extsz = ip->i_d.di_extsize)) - extsz = mp->m_sb.sb_rextsize; - resrtextents = qblocks = (count_fsb + extsz - 1); - do_div(resrtextents, mp->m_sb.sb_rextsize); - resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0); - quota_flag = XFS_QMOPT_RES_RTBLKS; + offset_fsb = XFS_B_TO_FSBT(mp, offset); + last_fsb = XFS_B_TO_FSB(mp, ((xfs_ufsize_t)(offset + count))); + if ((offset + count) > isize) { + error = xfs_iomap_eof_align_last_fsb(mp, io, isize, extsz, + &last_fsb); + if (error) + goto error_out; } else { - resrtextents = 0; - resblks = qblocks = XFS_DIOSTRAT_SPACE_RES(mp, count_fsb); - quota_flag = XFS_QMOPT_RES_REGBLKS; + if (found && (ret_imap->br_startblock == HOLESTARTBLOCK)) + last_fsb = MIN(last_fsb, (xfs_fileoff_t) + ret_imap->br_blockcount + + ret_imap->br_startoff); } + count_fsb = last_fsb - offset_fsb; + ASSERT(count_fsb > 0); + + resaligned = count_fsb; + if (unlikely(extsz)) { + if ((temp = do_mod(offset_fsb, extsz))) + resaligned += temp; + if ((temp = do_mod(resaligned, extsz))) + resaligned += extsz - temp; + } + + if (unlikely(rt)) { + resrtextents = qblocks = resaligned; + resrtextents /= mp->m_sb.sb_rextsize; + resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0); + quota_flag = XFS_QMOPT_RES_RTBLKS; + } else { + resrtextents = 0; + resblks = qblocks = XFS_DIOSTRAT_SPACE_RES(mp, resaligned); + quota_flag = XFS_QMOPT_RES_REGBLKS; + } /* * Allocate and setup the transaction @@ -425,7 +493,6 @@ xfs_iomap_write_direct( XFS_WRITE_LOG_RES(mp), resrtextents, XFS_TRANS_PERM_LOG_RES, XFS_WRITE_LOG_COUNT); - /* * Check for running out of space, note: need lock to return */ @@ -435,20 +502,20 @@ xfs_iomap_write_direct( if (error) goto error_out; - if (XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, tp, ip, qblocks, 0, quota_flag)) { - error = (EDQUOT); + error = XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, tp, ip, + qblocks, 0, quota_flag); + if (error) goto error1; - } - bmapi_flag = XFS_BMAPI_WRITE; xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); xfs_trans_ihold(tp, ip); - if (!(flags & BMAPI_MMAP) && (offset < ip->i_d.di_size || rt)) + bmapi_flag = XFS_BMAPI_WRITE; + if ((flags & BMAPI_DIRECT) && (offset < ip->i_d.di_size || extsz)) bmapi_flag |= XFS_BMAPI_PREALLOC; /* - * Issue the bmapi() call to allocate the blocks + * Issue the xfs_bmapi() call to allocate the blocks */ XFS_BMAP_INIT(&free_list, &firstfsb); nimaps = 1; @@ -483,8 +550,10 @@ xfs_iomap_write_direct( "extent-state : %x \n", (ip->i_mount)->m_fsname, (long long)ip->i_ino, - ret_imap->br_startblock, ret_imap->br_startoff, - ret_imap->br_blockcount,ret_imap->br_state); + (unsigned long long)ret_imap->br_startblock, + (unsigned long long)ret_imap->br_startoff, + (unsigned long long)ret_imap->br_blockcount, + ret_imap->br_state); } return 0; @@ -500,6 +569,63 @@ error_out: return XFS_ERROR(error); } +/* + * If the caller is doing a write at the end of the file, + * then extend the allocation out to the file system's write + * iosize. We clean up any extra space left over when the + * file is closed in xfs_inactive(). + * + * For sync writes, we are flushing delayed allocate space to + * try to make additional space available for allocation near + * the filesystem full boundary - preallocation hurts in that + * situation, of course. + */ +STATIC int +xfs_iomap_eof_want_preallocate( + xfs_mount_t *mp, + xfs_iocore_t *io, + xfs_fsize_t isize, + xfs_off_t offset, + size_t count, + int ioflag, + xfs_bmbt_irec_t *imap, + int nimaps, + int *prealloc) +{ + xfs_fileoff_t start_fsb; + xfs_filblks_t count_fsb; + xfs_fsblock_t firstblock; + int n, error, imaps; + + *prealloc = 0; + if ((ioflag & BMAPI_SYNC) || (offset + count) <= isize) + return 0; + + /* + * If there are any real blocks past eof, then don't + * do any speculative allocation. + */ + start_fsb = XFS_B_TO_FSBT(mp, ((xfs_ufsize_t)(offset + count - 1))); + count_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); + while (count_fsb > 0) { + imaps = nimaps; + firstblock = NULLFSBLOCK; + error = XFS_BMAPI(mp, NULL, io, start_fsb, count_fsb, + 0, &firstblock, 0, imap, &imaps, NULL); + if (error) + return error; + for (n = 0; n < imaps; n++) { + if ((imap[n].br_startblock != HOLESTARTBLOCK) && + (imap[n].br_startblock != DELAYSTARTBLOCK)) + return 0; + start_fsb += imap[n].br_blockcount; + count_fsb -= imap[n].br_blockcount; + } + } + *prealloc = 1; + return 0; +} + int xfs_iomap_write_delay( xfs_inode_t *ip, @@ -513,13 +639,15 @@ xfs_iomap_write_delay( xfs_iocore_t *io = &ip->i_iocore; xfs_fileoff_t offset_fsb; xfs_fileoff_t last_fsb; - xfs_fsize_t isize; + xfs_off_t aligned_offset; + xfs_fileoff_t ioalign; xfs_fsblock_t firstblock; + xfs_extlen_t extsz; + xfs_fsize_t isize; int nimaps; - int error; xfs_bmbt_irec_t imap[XFS_WRITE_IMAPS]; - int aeof; - int fsynced = 0; + int prealloc, fsynced = 0; + int error; ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE) != 0); @@ -527,152 +655,57 @@ xfs_iomap_write_delay( * Make sure that the dquots are there. This doesn't hold * the ilock across a disk read. */ - error = XFS_QM_DQATTACH(mp, ip, XFS_QMOPT_ILOCKED); if (error) return XFS_ERROR(error); + if (XFS_IS_REALTIME_INODE(ip)) { + if (!(extsz = ip->i_d.di_extsize)) + extsz = mp->m_sb.sb_rextsize; + } else { + extsz = ip->i_d.di_extsize; + } + + offset_fsb = XFS_B_TO_FSBT(mp, offset); + retry: isize = ip->i_d.di_size; - if (io->io_new_size > isize) { + if (io->io_new_size > isize) isize = io->io_new_size; - } - aeof = 0; - offset_fsb = XFS_B_TO_FSBT(mp, offset); - last_fsb = XFS_B_TO_FSB(mp, ((xfs_ufsize_t)(offset + count))); - /* - * If the caller is doing a write at the end of the file, - * then extend the allocation (and the buffer used for the write) - * out to the file system's write iosize. We clean up any extra - * space left over when the file is closed in xfs_inactive(). - * - * For sync writes, we are flushing delayed allocate space to - * try to make additional space available for allocation near - * the filesystem full boundary - preallocation hurts in that - * situation, of course. - */ - if (!(ioflag & BMAPI_SYNC) && ((offset + count) > ip->i_d.di_size)) { - xfs_off_t aligned_offset; - xfs_filblks_t count_fsb; - unsigned int iosize; - xfs_fileoff_t ioalign; - int n; - xfs_fileoff_t start_fsb; + error = xfs_iomap_eof_want_preallocate(mp, io, isize, offset, count, + ioflag, imap, XFS_WRITE_IMAPS, &prealloc); + if (error) + return error; - /* - * If there are any real blocks past eof, then don't - * do any speculative allocation. - */ - start_fsb = XFS_B_TO_FSBT(mp, - ((xfs_ufsize_t)(offset + count - 1))); - count_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); - while (count_fsb > 0) { - nimaps = XFS_WRITE_IMAPS; - error = XFS_BMAPI(mp, NULL, io, start_fsb, count_fsb, - 0, &firstblock, 0, imap, &nimaps, NULL); - if (error) { - return error; - } - for (n = 0; n < nimaps; n++) { - if ( !(io->io_flags & XFS_IOCORE_RT) && - !imap[n].br_startblock) { - cmn_err(CE_PANIC,"Access to block " - "zero: fs <%s> inode: %lld " - "start_block : %llx start_off " - ": %llx blkcnt : %llx " - "extent-state : %x \n", - (ip->i_mount)->m_fsname, - (long long)ip->i_ino, - imap[n].br_startblock, - imap[n].br_startoff, - imap[n].br_blockcount, - imap[n].br_state); - } - if ((imap[n].br_startblock != HOLESTARTBLOCK) && - (imap[n].br_startblock != DELAYSTARTBLOCK)) { - goto write_map; - } - start_fsb += imap[n].br_blockcount; - count_fsb -= imap[n].br_blockcount; - } - } - iosize = mp->m_writeio_blocks; + if (prealloc) { aligned_offset = XFS_WRITEIO_ALIGN(mp, (offset + count - 1)); ioalign = XFS_B_TO_FSBT(mp, aligned_offset); - last_fsb = ioalign + iosize; - aeof = 1; + last_fsb = ioalign + mp->m_writeio_blocks; + } else { + last_fsb = XFS_B_TO_FSB(mp, ((xfs_ufsize_t)(offset + count))); } -write_map: - nimaps = XFS_WRITE_IMAPS; - firstblock = NULLFSBLOCK; - /* - * If mounted with the "-o swalloc" option, roundup the allocation - * request to a stripe width boundary if the file size is >= - * stripe width and we are allocating past the allocation eof. - */ - if (!(io->io_flags & XFS_IOCORE_RT) && mp->m_swidth - && (mp->m_flags & XFS_MOUNT_SWALLOC) - && (isize >= XFS_FSB_TO_B(mp, mp->m_swidth)) && aeof) { - int eof; - xfs_fileoff_t new_last_fsb; - - new_last_fsb = roundup_64(last_fsb, mp->m_swidth); - error = xfs_bmap_eof(ip, new_last_fsb, XFS_DATA_FORK, &eof); - if (error) { - return error; - } - if (eof) { - last_fsb = new_last_fsb; - } - /* - * Roundup the allocation request to a stripe unit (m_dalign) boundary - * if the file size is >= stripe unit size, and we are allocating past - * the allocation eof. - */ - } else if (!(io->io_flags & XFS_IOCORE_RT) && mp->m_dalign && - (isize >= XFS_FSB_TO_B(mp, mp->m_dalign)) && aeof) { - int eof; - xfs_fileoff_t new_last_fsb; - new_last_fsb = roundup_64(last_fsb, mp->m_dalign); - error = xfs_bmap_eof(ip, new_last_fsb, XFS_DATA_FORK, &eof); - if (error) { - return error; - } - if (eof) { - last_fsb = new_last_fsb; - } - /* - * Round up the allocation request to a real-time extent boundary - * if the file is on the real-time subvolume. - */ - } else if (io->io_flags & XFS_IOCORE_RT && aeof) { - int eof; - xfs_fileoff_t new_last_fsb; - - new_last_fsb = roundup_64(last_fsb, mp->m_sb.sb_rextsize); - error = XFS_BMAP_EOF(mp, io, new_last_fsb, XFS_DATA_FORK, &eof); - if (error) { + if (prealloc || extsz) { + error = xfs_iomap_eof_align_last_fsb(mp, io, isize, extsz, + &last_fsb); + if (error) return error; - } - if (eof) - last_fsb = new_last_fsb; } + + nimaps = XFS_WRITE_IMAPS; + firstblock = NULLFSBLOCK; error = xfs_bmapi(NULL, ip, offset_fsb, (xfs_filblks_t)(last_fsb - offset_fsb), XFS_BMAPI_DELAY | XFS_BMAPI_WRITE | XFS_BMAPI_ENTIRE, &firstblock, 1, imap, &nimaps, NULL); - /* - * This can be EDQUOT, if nimaps == 0 - */ - if (error && (error != ENOSPC)) { + if (error && (error != ENOSPC)) return XFS_ERROR(error); - } + /* * If bmapi returned us nothing, and if we didn't get back EDQUOT, - * then we must have run out of space. + * then we must have run out of space - flush delalloc, and retry.. */ if (nimaps == 0) { xfs_iomap_enter_trace(XFS_IOMAP_WRITE_NOSPACE, @@ -684,17 +717,21 @@ write_map: goto retry; } - *ret_imap = imap[0]; - *nmaps = 1; - if ( !(io->io_flags & XFS_IOCORE_RT) && !ret_imap->br_startblock) { + if (!(io->io_flags & XFS_IOCORE_RT) && !ret_imap->br_startblock) { cmn_err(CE_PANIC,"Access to block zero: fs <%s> inode: %lld " "start_block : %llx start_off : %llx blkcnt : %llx " "extent-state : %x \n", (ip->i_mount)->m_fsname, (long long)ip->i_ino, - ret_imap->br_startblock, ret_imap->br_startoff, - ret_imap->br_blockcount,ret_imap->br_state); + (unsigned long long)ret_imap->br_startblock, + (unsigned long long)ret_imap->br_startoff, + (unsigned long long)ret_imap->br_blockcount, + ret_imap->br_state); } + + *ret_imap = imap[0]; + *nmaps = 1; + return 0; } @@ -820,17 +857,21 @@ xfs_iomap_write_allocate( */ for (i = 0; i < nimaps; i++) { - if ( !(io->io_flags & XFS_IOCORE_RT) && - !imap[i].br_startblock) { + if (!(io->io_flags & XFS_IOCORE_RT) && + !imap[i].br_startblock) { cmn_err(CE_PANIC,"Access to block zero: " "fs <%s> inode: %lld " - "start_block : %llx start_off : %llx " + "start_block : %llx start_off : %llx " "blkcnt : %llx extent-state : %x \n", (ip->i_mount)->m_fsname, (long long)ip->i_ino, - imap[i].br_startblock, - imap[i].br_startoff, - imap[i].br_blockcount,imap[i].br_state); + (unsigned long long) + imap[i].br_startblock, + (unsigned long long) + imap[i].br_startoff, + (unsigned long long) + imap[i].br_blockcount, + imap[i].br_state); } if ((offset_fsb >= imap[i].br_startoff) && (offset_fsb < (imap[i].br_startoff + @@ -867,17 +908,17 @@ xfs_iomap_write_unwritten( { xfs_mount_t *mp = ip->i_mount; xfs_iocore_t *io = &ip->i_iocore; - xfs_trans_t *tp; xfs_fileoff_t offset_fsb; xfs_filblks_t count_fsb; xfs_filblks_t numblks_fsb; - xfs_bmbt_irec_t imap; + xfs_fsblock_t firstfsb; + int nimaps; + xfs_trans_t *tp; + xfs_bmbt_irec_t imap; + xfs_bmap_free_t free_list; + uint resblks; int committed; int error; - int nres; - int nimaps; - xfs_fsblock_t firstfsb; - xfs_bmap_free_t free_list; xfs_iomap_enter_trace(XFS_IOMAP_UNWRITTEN, &ip->i_iocore, offset, count); @@ -886,9 +927,9 @@ xfs_iomap_write_unwritten( count_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + count); count_fsb = (xfs_filblks_t)(count_fsb - offset_fsb); - do { - nres = XFS_DIOSTRAT_SPACE_RES(mp, 0); + resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0) << 1; + do { /* * set up a transaction to convert the range of extents * from unwritten to real. Do allocations in a loop until @@ -896,7 +937,7 @@ xfs_iomap_write_unwritten( */ tp = xfs_trans_alloc(mp, XFS_TRANS_STRAT_WRITE); - error = xfs_trans_reserve(tp, nres, + error = xfs_trans_reserve(tp, resblks, XFS_WRITE_LOG_RES(mp), 0, XFS_TRANS_PERM_LOG_RES, XFS_WRITE_LOG_COUNT); @@ -915,7 +956,7 @@ xfs_iomap_write_unwritten( XFS_BMAP_INIT(&free_list, &firstfsb); nimaps = 1; error = xfs_bmapi(tp, ip, offset_fsb, count_fsb, - XFS_BMAPI_WRITE, &firstfsb, + XFS_BMAPI_WRITE|XFS_BMAPI_CONVERT, &firstfsb, 1, &imap, &nimaps, &free_list); if (error) goto error_on_bmapi_transaction; @@ -929,15 +970,17 @@ xfs_iomap_write_unwritten( xfs_iunlock(ip, XFS_ILOCK_EXCL); if (error) goto error0; - + if ( !(io->io_flags & XFS_IOCORE_RT) && !imap.br_startblock) { cmn_err(CE_PANIC,"Access to block zero: fs <%s> " "inode: %lld start_block : %llx start_off : " "%llx blkcnt : %llx extent-state : %x \n", (ip->i_mount)->m_fsname, (long long)ip->i_ino, - imap.br_startblock,imap.br_startoff, - imap.br_blockcount,imap.br_state); + (unsigned long long)imap.br_startblock, + (unsigned long long)imap.br_startoff, + (unsigned long long)imap.br_blockcount, + imap.br_state); } if ((numblks_fsb = imap.br_blockcount) == 0) { diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index f63646e..c59450e 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -56,6 +56,7 @@ xfs_bulkstat_one_iget( { xfs_dinode_core_t *dic; /* dinode core info pointer */ xfs_inode_t *ip; /* incore inode pointer */ + vnode_t *vp; int error; error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, bno); @@ -72,6 +73,7 @@ xfs_bulkstat_one_iget( goto out_iput; } + vp = XFS_ITOV(ip); dic = &ip->i_d; /* xfs_iget returns the following without needing @@ -84,8 +86,7 @@ xfs_bulkstat_one_iget( buf->bs_uid = dic->di_uid; buf->bs_gid = dic->di_gid; buf->bs_size = dic->di_size; - buf->bs_atime.tv_sec = dic->di_atime.t_sec; - buf->bs_atime.tv_nsec = dic->di_atime.t_nsec; + vn_atime_to_bstime(vp, &buf->bs_atime); buf->bs_mtime.tv_sec = dic->di_mtime.t_sec; buf->bs_mtime.tv_nsec = dic->di_mtime.t_nsec; buf->bs_ctime.tv_sec = dic->di_ctime.t_sec; diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 29af512..3d9a36e 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -178,6 +178,83 @@ xlog_trace_iclog(xlog_in_core_t *iclog, uint state) #define xlog_trace_iclog(iclog,state) #endif /* XFS_LOG_TRACE */ + +static void +xlog_ins_ticketq(struct xlog_ticket **qp, struct xlog_ticket *tic) +{ + if (*qp) { + tic->t_next = (*qp); + tic->t_prev = (*qp)->t_prev; + (*qp)->t_prev->t_next = tic; + (*qp)->t_prev = tic; + } else { + tic->t_prev = tic->t_next = tic; + *qp = tic; + } + + tic->t_flags |= XLOG_TIC_IN_Q; +} + +static void +xlog_del_ticketq(struct xlog_ticket **qp, struct xlog_ticket *tic) +{ + if (tic == tic->t_next) { + *qp = NULL; + } else { + *qp = tic->t_next; + tic->t_next->t_prev = tic->t_prev; + tic->t_prev->t_next = tic->t_next; + } + + tic->t_next = tic->t_prev = NULL; + tic->t_flags &= ~XLOG_TIC_IN_Q; +} + +static void +xlog_grant_sub_space(struct log *log, int bytes) +{ + log->l_grant_write_bytes -= bytes; + if (log->l_grant_write_bytes < 0) { + log->l_grant_write_bytes += log->l_logsize; + log->l_grant_write_cycle--; + } + + log->l_grant_reserve_bytes -= bytes; + if ((log)->l_grant_reserve_bytes < 0) { + log->l_grant_reserve_bytes += log->l_logsize; + log->l_grant_reserve_cycle--; + } + +} + +static void +xlog_grant_add_space_write(struct log *log, int bytes) +{ + log->l_grant_write_bytes += bytes; + if (log->l_grant_write_bytes > log->l_logsize) { + log->l_grant_write_bytes -= log->l_logsize; + log->l_grant_write_cycle++; + } +} + +static void +xlog_grant_add_space_reserve(struct log *log, int bytes) +{ + log->l_grant_reserve_bytes += bytes; + if (log->l_grant_reserve_bytes > log->l_logsize) { + log->l_grant_reserve_bytes -= log->l_logsize; + log->l_grant_reserve_cycle++; + } +} + +static inline void +xlog_grant_add_space(struct log *log, int bytes) +{ + xlog_grant_add_space_write(log, bytes); + xlog_grant_add_space_reserve(log, bytes); +} + + /* * NOTES: * @@ -428,7 +505,7 @@ xfs_log_mount(xfs_mount_t *mp, if (readonly) vfsp->vfs_flag &= ~VFS_RDONLY; - error = xlog_recover(mp->m_log, readonly); + error = xlog_recover(mp->m_log); if (readonly) vfsp->vfs_flag |= VFS_RDONLY; @@ -1320,8 +1397,7 @@ xlog_sync(xlog_t *log, /* move grant heads by roundoff in sync */ s = GRANT_LOCK(log); - XLOG_GRANT_ADD_SPACE(log, roundoff, 'w'); - XLOG_GRANT_ADD_SPACE(log, roundoff, 'r'); + xlog_grant_add_space(log, roundoff); GRANT_UNLOCK(log, s); /* put cycle number in every block */ @@ -1515,7 +1591,6 @@ xlog_state_finish_copy(xlog_t *log, * print out info relating to regions written which consume * the reservation */ -#if defined(XFS_LOG_RES_DEBUG) STATIC void xlog_print_tic_res(xfs_mount_t *mp, xlog_ticket_t *ticket) { @@ -1605,11 +1680,11 @@ xlog_print_tic_res(xfs_mount_t *mp, xlog_ticket_t *ticket) ticket->t_res_arr_sum, ticket->t_res_o_flow, ticket->t_res_num_ophdrs, ophdr_spc, ticket->t_res_arr_sum + - ticket->t_res_o_flow + ophdr_spc, + ticket->t_res_o_flow + ophdr_spc, ticket->t_res_num); for (i = 0; i < ticket->t_res_num; i++) { - uint r_type = ticket->t_res_arr[i].r_type; + uint r_type = ticket->t_res_arr[i].r_type; cmn_err(CE_WARN, "region[%u]: %s - %u bytes\n", i, @@ -1618,9 +1693,6 @@ xlog_print_tic_res(xfs_mount_t *mp, xlog_ticket_t *ticket) ticket->t_res_arr[i].r_len); } } -#else -#define xlog_print_tic_res(mp, ticket) -#endif /* * Write some region out to in-core log @@ -2389,7 +2461,7 @@ xlog_grant_log_space(xlog_t *log, /* something is already sleeping; insert new transaction at end */ if (log->l_reserve_headq) { - XLOG_INS_TICKETQ(log->l_reserve_headq, tic); + xlog_ins_ticketq(&log->l_reserve_headq, tic); xlog_trace_loggrant(log, tic, "xlog_grant_log_space: sleep 1"); /* @@ -2422,7 +2494,7 @@ redo: log->l_grant_reserve_bytes); if (free_bytes < need_bytes) { if ((tic->t_flags & XLOG_TIC_IN_Q) == 0) - XLOG_INS_TICKETQ(log->l_reserve_headq, tic); + xlog_ins_ticketq(&log->l_reserve_headq, tic); xlog_trace_loggrant(log, tic, "xlog_grant_log_space: sleep 2"); XFS_STATS_INC(xs_sleep_logspace); @@ -2439,11 +2511,10 @@ redo: s = GRANT_LOCK(log); goto redo; } else if (tic->t_flags & XLOG_TIC_IN_Q) - XLOG_DEL_TICKETQ(log->l_reserve_headq, tic); + xlog_del_ticketq(&log->l_reserve_headq, tic); /* we've got enough space */ - XLOG_GRANT_ADD_SPACE(log, need_bytes, 'w'); - XLOG_GRANT_ADD_SPACE(log, need_bytes, 'r'); + xlog_grant_add_space(log, need_bytes); #ifdef DEBUG tail_lsn = log->l_tail_lsn; /* @@ -2464,7 +2535,7 @@ redo: error_return: if (tic->t_flags & XLOG_TIC_IN_Q) - XLOG_DEL_TICKETQ(log->l_reserve_headq, tic); + xlog_del_ticketq(&log->l_reserve_headq, tic); xlog_trace_loggrant(log, tic, "xlog_grant_log_space: err_ret"); /* * If we are failing, make sure the ticket doesn't have any @@ -2533,7 +2604,7 @@ xlog_regrant_write_log_space(xlog_t *log, if (ntic != log->l_write_headq) { if ((tic->t_flags & XLOG_TIC_IN_Q) == 0) - XLOG_INS_TICKETQ(log->l_write_headq, tic); + xlog_ins_ticketq(&log->l_write_headq, tic); xlog_trace_loggrant(log, tic, "xlog_regrant_write_log_space: sleep 1"); @@ -2565,7 +2636,7 @@ redo: log->l_grant_write_bytes); if (free_bytes < need_bytes) { if ((tic->t_flags & XLOG_TIC_IN_Q) == 0) - XLOG_INS_TICKETQ(log->l_write_headq, tic); + xlog_ins_ticketq(&log->l_write_headq, tic); XFS_STATS_INC(xs_sleep_logspace); sv_wait(&tic->t_sema, PINOD|PLTWAIT, &log->l_grant_lock, s); @@ -2581,9 +2652,10 @@ redo: s = GRANT_LOCK(log); goto redo; } else if (tic->t_flags & XLOG_TIC_IN_Q) - XLOG_DEL_TICKETQ(log->l_write_headq, tic); + xlog_del_ticketq(&log->l_write_headq, tic); - XLOG_GRANT_ADD_SPACE(log, need_bytes, 'w'); /* we've got enough space */ + /* we've got enough space */ + xlog_grant_add_space_write(log, need_bytes); #ifdef DEBUG tail_lsn = log->l_tail_lsn; if (CYCLE_LSN(tail_lsn) != log->l_grant_write_cycle) { @@ -2600,7 +2672,7 @@ redo: error_return: if (tic->t_flags & XLOG_TIC_IN_Q) - XLOG_DEL_TICKETQ(log->l_reserve_headq, tic); + xlog_del_ticketq(&log->l_reserve_headq, tic); xlog_trace_loggrant(log, tic, "xlog_regrant_write_log_space: err_ret"); /* * If we are failing, make sure the ticket doesn't have any @@ -2633,8 +2705,7 @@ xlog_regrant_reserve_log_space(xlog_t *log, ticket->t_cnt--; s = GRANT_LOCK(log); - XLOG_GRANT_SUB_SPACE(log, ticket->t_curr_res, 'w'); - XLOG_GRANT_SUB_SPACE(log, ticket->t_curr_res, 'r'); + xlog_grant_sub_space(log, ticket->t_curr_res); ticket->t_curr_res = ticket->t_unit_res; XLOG_TIC_RESET_RES(ticket); xlog_trace_loggrant(log, ticket, @@ -2647,7 +2718,7 @@ xlog_regrant_reserve_log_space(xlog_t *log, return; } - XLOG_GRANT_ADD_SPACE(log, ticket->t_unit_res, 'r'); + xlog_grant_add_space_reserve(log, ticket->t_unit_res); xlog_trace_loggrant(log, ticket, "xlog_regrant_reserve_log_space: exit"); xlog_verify_grant_head(log, 0); @@ -2683,8 +2754,7 @@ xlog_ungrant_log_space(xlog_t *log, s = GRANT_LOCK(log); xlog_trace_loggrant(log, ticket, "xlog_ungrant_log_space: enter"); - XLOG_GRANT_SUB_SPACE(log, ticket->t_curr_res, 'w'); - XLOG_GRANT_SUB_SPACE(log, ticket->t_curr_res, 'r'); + xlog_grant_sub_space(log, ticket->t_curr_res); xlog_trace_loggrant(log, ticket, "xlog_ungrant_log_space: sub current"); @@ -2693,8 +2763,7 @@ xlog_ungrant_log_space(xlog_t *log, */ if (ticket->t_cnt > 0) { ASSERT(ticket->t_flags & XLOG_TIC_PERM_RESERV); - XLOG_GRANT_SUB_SPACE(log, ticket->t_unit_res*ticket->t_cnt,'w'); - XLOG_GRANT_SUB_SPACE(log, ticket->t_unit_res*ticket->t_cnt,'r'); + xlog_grant_sub_space(log, ticket->t_unit_res*ticket->t_cnt); } xlog_trace_loggrant(log, ticket, "xlog_ungrant_log_space: exit"); diff --git a/fs/xfs/xfs_log.h b/fs/xfs/xfs_log.h index f40d439..4b2ac88 100644 --- a/fs/xfs/xfs_log.h +++ b/fs/xfs/xfs_log.h @@ -96,7 +96,6 @@ static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2) /* Region types for iovec's i_type */ -#if defined(XFS_LOG_RES_DEBUG) #define XLOG_REG_TYPE_BFORMAT 1 #define XLOG_REG_TYPE_BCHUNK 2 #define XLOG_REG_TYPE_EFI_FORMAT 3 @@ -117,21 +116,13 @@ static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2) #define XLOG_REG_TYPE_COMMIT 18 #define XLOG_REG_TYPE_TRANSHDR 19 #define XLOG_REG_TYPE_MAX 19 -#endif -#if defined(XFS_LOG_RES_DEBUG) #define XLOG_VEC_SET_TYPE(vecp, t) ((vecp)->i_type = (t)) -#else -#define XLOG_VEC_SET_TYPE(vecp, t) -#endif - typedef struct xfs_log_iovec { xfs_caddr_t i_addr; /* beginning address of region */ int i_len; /* length in bytes of region */ -#if defined(XFS_LOG_RES_DEBUG) - uint i_type; /* type of region */ -#endif + uint i_type; /* type of region */ } xfs_log_iovec_t; typedef void* xfs_log_ticket_t; diff --git a/fs/xfs/xfs_log_priv.h b/fs/xfs/xfs_log_priv.h index 4518b18..34bcbf5 100644 --- a/fs/xfs/xfs_log_priv.h +++ b/fs/xfs/xfs_log_priv.h @@ -253,7 +253,6 @@ typedef __uint32_t xlog_tid_t; /* Ticket reservation region accounting */ -#if defined(XFS_LOG_RES_DEBUG) #define XLOG_TIC_LEN_MAX 15 #define XLOG_TIC_RESET_RES(t) ((t)->t_res_num = \ (t)->t_res_arr_sum = (t)->t_res_num_ophdrs = 0) @@ -278,15 +277,9 @@ typedef __uint32_t xlog_tid_t; * we don't care about. */ typedef struct xlog_res { - uint r_len; - uint r_type; + uint r_len; /* region length :4 */ + uint r_type; /* region's transaction type :4 */ } xlog_res_t; -#else -#define XLOG_TIC_RESET_RES(t) -#define XLOG_TIC_ADD_OPHDR(t) -#define XLOG_TIC_ADD_REGION(t, len, type) -#endif - typedef struct xlog_ticket { sv_t t_sema; /* sleep on this semaphore : 20 */ @@ -301,14 +294,12 @@ typedef struct xlog_ticket { char t_flags; /* properties of reservation : 1 */ uint t_trans_type; /* transaction type : 4 */ -#if defined (XFS_LOG_RES_DEBUG) /* reservation array fields */ uint t_res_num; /* num in array : 4 */ - xlog_res_t t_res_arr[XLOG_TIC_LEN_MAX]; /* array of res : X */ uint t_res_num_ophdrs; /* num op hdrs : 4 */ uint t_res_arr_sum; /* array sum : 4 */ uint t_res_o_flow; /* sum overflow : 4 */ -#endif + xlog_res_t t_res_arr[XLOG_TIC_LEN_MAX]; /* array of res : 8 * 15 */ } xlog_ticket_t; #endif @@ -494,71 +485,13 @@ typedef struct log { #define XLOG_FORCED_SHUTDOWN(log) ((log)->l_flags & XLOG_IO_ERROR) -#define XLOG_GRANT_SUB_SPACE(log,bytes,type) \ - { \ - if (type == 'w') { \ - (log)->l_grant_write_bytes -= (bytes); \ - if ((log)->l_grant_write_bytes < 0) { \ - (log)->l_grant_write_bytes += (log)->l_logsize; \ - (log)->l_grant_write_cycle--; \ - } \ - } else { \ - (log)->l_grant_reserve_bytes -= (bytes); \ - if ((log)->l_grant_reserve_bytes < 0) { \ - (log)->l_grant_reserve_bytes += (log)->l_logsize;\ - (log)->l_grant_reserve_cycle--; \ - } \ - } \ - } -#define XLOG_GRANT_ADD_SPACE(log,bytes,type) \ - { \ - if (type == 'w') { \ - (log)->l_grant_write_bytes += (bytes); \ - if ((log)->l_grant_write_bytes > (log)->l_logsize) { \ - (log)->l_grant_write_bytes -= (log)->l_logsize; \ - (log)->l_grant_write_cycle++; \ - } \ - } else { \ - (log)->l_grant_reserve_bytes += (bytes); \ - if ((log)->l_grant_reserve_bytes > (log)->l_logsize) { \ - (log)->l_grant_reserve_bytes -= (log)->l_logsize;\ - (log)->l_grant_reserve_cycle++; \ - } \ - } \ - } -#define XLOG_INS_TICKETQ(q, tic) \ - { \ - if (q) { \ - (tic)->t_next = (q); \ - (tic)->t_prev = (q)->t_prev; \ - (q)->t_prev->t_next = (tic); \ - (q)->t_prev = (tic); \ - } else { \ - (tic)->t_prev = (tic)->t_next = (tic); \ - (q) = (tic); \ - } \ - (tic)->t_flags |= XLOG_TIC_IN_Q; \ - } -#define XLOG_DEL_TICKETQ(q, tic) \ - { \ - if ((tic) == (tic)->t_next) { \ - (q) = NULL; \ - } else { \ - (q) = (tic)->t_next; \ - (tic)->t_next->t_prev = (tic)->t_prev; \ - (tic)->t_prev->t_next = (tic)->t_next; \ - } \ - (tic)->t_next = (tic)->t_prev = NULL; \ - (tic)->t_flags &= ~XLOG_TIC_IN_Q; \ - } /* common routines */ extern xfs_lsn_t xlog_assign_tail_lsn(struct xfs_mount *mp); extern int xlog_find_tail(xlog_t *log, xfs_daddr_t *head_blk, - xfs_daddr_t *tail_blk, - int readonly); -extern int xlog_recover(xlog_t *log, int readonly); + xfs_daddr_t *tail_blk); +extern int xlog_recover(xlog_t *log); extern int xlog_recover_finish(xlog_t *log, int mfsi_flags); extern void xlog_pack_data(xlog_t *log, xlog_in_core_t *iclog, int); extern void xlog_recover_process_iunlinks(xlog_t *log); diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 8ab7df7..7d46cbd 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -783,8 +783,7 @@ int xlog_find_tail( xlog_t *log, xfs_daddr_t *head_blk, - xfs_daddr_t *tail_blk, - int readonly) + xfs_daddr_t *tail_blk) { xlog_rec_header_t *rhead; xlog_op_header_t *op_head; @@ -2563,10 +2562,12 @@ xlog_recover_do_quotaoff_trans( /* * The logitem format's flag tells us if this was user quotaoff, - * group quotaoff or both. + * group/project quotaoff or both. */ if (qoff_f->qf_flags & XFS_UQUOTA_ACCT) log->l_quotaoffs_flag |= XFS_DQ_USER; + if (qoff_f->qf_flags & XFS_PQUOTA_ACCT) + log->l_quotaoffs_flag |= XFS_DQ_PROJ; if (qoff_f->qf_flags & XFS_GQUOTA_ACCT) log->l_quotaoffs_flag |= XFS_DQ_GROUP; @@ -3890,14 +3891,13 @@ xlog_do_recover( */ int xlog_recover( - xlog_t *log, - int readonly) + xlog_t *log) { xfs_daddr_t head_blk, tail_blk; int error; /* find the tail of the log */ - if ((error = xlog_find_tail(log, &head_blk, &tail_blk, readonly))) + if ((error = xlog_find_tail(log, &head_blk, &tail_blk))) return error; if (tail_blk != head_blk) { diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 303af86..6088e14 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -51,7 +51,7 @@ STATIC int xfs_uuid_mount(xfs_mount_t *); STATIC void xfs_uuid_unmount(xfs_mount_t *mp); STATIC void xfs_unmountfs_wait(xfs_mount_t *); -static struct { +static const struct { short offset; short type; /* 0 = integer * 1 = binary / string (no translation) @@ -1077,8 +1077,7 @@ xfs_unmountfs(xfs_mount_t *mp, struct cred *cr) xfs_iflush_all(mp); - XFS_QM_DQPURGEALL(mp, - XFS_QMOPT_UQUOTA | XFS_QMOPT_GQUOTA | XFS_QMOPT_UMOUNTING); + XFS_QM_DQPURGEALL(mp, XFS_QMOPT_QUOTALL | XFS_QMOPT_UMOUNTING); /* * Flush out the log synchronously so that we know for sure diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 3432fd5..cd3cf96 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -308,7 +308,6 @@ typedef struct xfs_mount { xfs_buftarg_t *m_ddev_targp; /* saves taking the address */ xfs_buftarg_t *m_logdev_targp;/* ptr to log device */ xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */ -#define m_dev m_ddev_targp->pbr_dev __uint8_t m_dircook_elog; /* log d-cookie entry bits */ __uint8_t m_blkbit_log; /* blocklog + NBBY */ __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ @@ -393,7 +392,7 @@ typedef struct xfs_mount { user */ #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment allocations */ -#define XFS_MOUNT_COMPAT_ATTR (1ULL << 8) /* do not use attr2 format */ +#define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */ /* (1ULL << 9) -- currently unused */ #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */ #define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */ diff --git a/fs/xfs/xfs_rename.c b/fs/xfs/xfs_rename.c index 4d4e8f4..81a05cf 100644 --- a/fs/xfs/xfs_rename.c +++ b/fs/xfs/xfs_rename.c @@ -243,7 +243,6 @@ xfs_rename( xfs_inode_t *inodes[4]; int target_ip_dropped = 0; /* dropped target_ip link? */ vnode_t *src_dir_vp; - bhv_desc_t *target_dir_bdp; int spaceres; int target_link_zero = 0; int num_inodes; @@ -260,14 +259,12 @@ xfs_rename( * Find the XFS behavior descriptor for the target directory * vnode since it was not handed to us. */ - target_dir_bdp = vn_bhv_lookup_unlocked(VN_BHV_HEAD(target_dir_vp), - &xfs_vnodeops); - if (target_dir_bdp == NULL) { + target_dp = xfs_vtoi(target_dir_vp); + if (target_dp == NULL) { return XFS_ERROR(EXDEV); } src_dp = XFS_BHVTOI(src_dir_bdp); - target_dp = XFS_BHVTOI(target_dir_bdp); mp = src_dp->i_mount; if (DM_EVENT_ENABLED(src_dir_vp->v_vfsp, src_dp, DM_EVENT_RENAME) || diff --git a/fs/xfs/xfs_rw.c b/fs/xfs/xfs_rw.c index c4b2087..a59c102 100644 --- a/fs/xfs/xfs_rw.c +++ b/fs/xfs/xfs_rw.c @@ -238,6 +238,7 @@ xfs_bioerror_relse( } return (EIO); } + /* * Prints out an ALERT message about I/O error. */ @@ -252,11 +253,9 @@ xfs_ioerror_alert( "I/O error in filesystem (\"%s\") meta-data dev %s block 0x%llx" " (\"%s\") error %d buf count %zd", (!mp || !mp->m_fsname) ? "(fs name not set)" : mp->m_fsname, - XFS_BUFTARG_NAME(bp->pb_target), - (__uint64_t)blkno, - func, - XFS_BUF_GETERROR(bp), - XFS_BUF_COUNT(bp)); + XFS_BUFTARG_NAME(XFS_BUF_TARGET(bp)), + (__uint64_t)blkno, func, + XFS_BUF_GETERROR(bp), XFS_BUF_COUNT(bp)); } /* diff --git a/fs/xfs/xfs_sb.h b/fs/xfs/xfs_sb.h index 4a17d33..bf168a9 100644 --- a/fs/xfs/xfs_sb.h +++ b/fs/xfs/xfs_sb.h @@ -68,18 +68,6 @@ struct xfs_mount; (XFS_SB_VERSION_NUMBITS | \ XFS_SB_VERSION_OKREALFBITS | \ XFS_SB_VERSION_OKSASHFBITS) -#define XFS_SB_VERSION_MKFS(ia,dia,extflag,dirv2,na,sflag,morebits) \ - (((ia) || (dia) || (extflag) || (dirv2) || (na) || (sflag) || \ - (morebits)) ? \ - (XFS_SB_VERSION_4 | \ - ((ia) ? XFS_SB_VERSION_ALIGNBIT : 0) | \ - ((dia) ? XFS_SB_VERSION_DALIGNBIT : 0) | \ - ((extflag) ? XFS_SB_VERSION_EXTFLGBIT : 0) | \ - ((dirv2) ? XFS_SB_VERSION_DIRV2BIT : 0) | \ - ((na) ? XFS_SB_VERSION_LOGV2BIT : 0) | \ - ((sflag) ? XFS_SB_VERSION_SECTORBIT : 0) | \ - ((morebits) ? XFS_SB_VERSION_MOREBITSBIT : 0)) : \ - XFS_SB_VERSION_1) /* * There are two words to hold XFS "feature" bits: the original @@ -105,11 +93,6 @@ struct xfs_mount; (XFS_SB_VERSION2_OKREALFBITS | \ XFS_SB_VERSION2_OKSASHFBITS ) -/* - * mkfs macro to set up sb_features2 word - */ -#define XFS_SB_VERSION2_MKFS(resvd1, sbcntr) 0 - typedef struct xfs_sb { __uint32_t sb_magicnum; /* magic number == XFS_SB_MAGIC */ diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index 279e043..d3d714e 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -1014,6 +1014,7 @@ xfs_trans_cancel( xfs_log_item_t *lip; int i; #endif + xfs_mount_t *mp = tp->t_mountp; /* * See if the caller is being too lazy to figure out if @@ -1026,9 +1027,10 @@ xfs_trans_cancel( * filesystem. This happens in paths where we detect * corruption and decide to give up. */ - if ((tp->t_flags & XFS_TRANS_DIRTY) && - !XFS_FORCED_SHUTDOWN(tp->t_mountp)) - xfs_force_shutdown(tp->t_mountp, XFS_CORRUPT_INCORE); + if ((tp->t_flags & XFS_TRANS_DIRTY) && !XFS_FORCED_SHUTDOWN(mp)) { + XFS_ERROR_REPORT("xfs_trans_cancel", XFS_ERRLEVEL_LOW, mp); + xfs_force_shutdown(mp, XFS_CORRUPT_INCORE); + } #ifdef DEBUG if (!(flags & XFS_TRANS_ABORT)) { licp = &(tp->t_items); @@ -1040,7 +1042,7 @@ xfs_trans_cancel( } lip = lidp->lid_item; - if (!XFS_FORCED_SHUTDOWN(tp->t_mountp)) + if (!XFS_FORCED_SHUTDOWN(mp)) ASSERT(!(lip->li_type == XFS_LI_EFD)); } licp = licp->lic_next; @@ -1048,7 +1050,7 @@ xfs_trans_cancel( } #endif xfs_trans_unreserve_and_mod_sb(tp); - XFS_TRANS_UNRESERVE_AND_MOD_DQUOTS(tp->t_mountp, tp); + XFS_TRANS_UNRESERVE_AND_MOD_DQUOTS(mp, tp); if (tp->t_ticket) { if (flags & XFS_TRANS_RELEASE_LOG_RES) { @@ -1057,7 +1059,7 @@ xfs_trans_cancel( } else { log_flags = 0; } - xfs_log_done(tp->t_mountp, tp->t_ticket, NULL, log_flags); + xfs_log_done(mp, tp->t_ticket, NULL, log_flags); } /* mark this thread as no longer being in a transaction */ diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h index a889963..d77901c 100644 --- a/fs/xfs/xfs_trans.h +++ b/fs/xfs/xfs_trans.h @@ -973,7 +973,6 @@ void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *); void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *); void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *); void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *); -void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *); void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *); void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint); void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *); diff --git a/fs/xfs/xfs_utils.c b/fs/xfs/xfs_utils.c index fefe1d6..34654ec 100644 --- a/fs/xfs/xfs_utils.c +++ b/fs/xfs/xfs_utils.c @@ -55,16 +55,13 @@ xfs_get_dir_entry( xfs_inode_t **ipp) { vnode_t *vp; - bhv_desc_t *bdp; vp = VNAME_TO_VNODE(dentry); - bdp = vn_bhv_lookup_unlocked(VN_BHV_HEAD(vp), &xfs_vnodeops); - if (!bdp) { - *ipp = NULL; + + *ipp = xfs_vtoi(vp); + if (!*ipp) return XFS_ERROR(ENOENT); - } VN_HOLD(vp); - *ipp = XFS_BHVTOI(bdp); return 0; } diff --git a/fs/xfs/xfs_vfsops.c b/fs/xfs/xfs_vfsops.c index 7bdbd99..b6ad370 100644 --- a/fs/xfs/xfs_vfsops.c +++ b/fs/xfs/xfs_vfsops.c @@ -53,6 +53,7 @@ #include "xfs_acl.h" #include "xfs_attr.h" #include "xfs_clnt.h" +#include "xfs_fsops.h" STATIC int xfs_sync(bhv_desc_t *, int, cred_t *); @@ -290,8 +291,8 @@ xfs_start_flags( mp->m_flags |= XFS_MOUNT_IDELETE; if (ap->flags & XFSMNT_DIRSYNC) mp->m_flags |= XFS_MOUNT_DIRSYNC; - if (ap->flags & XFSMNT_COMPAT_ATTR) - mp->m_flags |= XFS_MOUNT_COMPAT_ATTR; + if (ap->flags & XFSMNT_ATTR2) + mp->m_flags |= XFS_MOUNT_ATTR2; if (ap->flags2 & XFSMNT2_COMPAT_IOSIZE) mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; @@ -312,6 +313,8 @@ xfs_start_flags( mp->m_flags |= XFS_MOUNT_NOUUID; if (ap->flags & XFSMNT_BARRIER) mp->m_flags |= XFS_MOUNT_BARRIER; + else + mp->m_flags &= ~XFS_MOUNT_BARRIER; return 0; } @@ -330,10 +333,11 @@ xfs_finish_flags( /* Fail a mount where the logbuf is smaller then the log stripe */ if (XFS_SB_VERSION_HASLOGV2(&mp->m_sb)) { - if ((ap->logbufsize == -1) && + if ((ap->logbufsize <= 0) && (mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE)) { mp->m_logbsize = mp->m_sb.sb_logsunit; - } else if (ap->logbufsize < mp->m_sb.sb_logsunit) { + } else if (ap->logbufsize > 0 && + ap->logbufsize < mp->m_sb.sb_logsunit) { cmn_err(CE_WARN, "XFS: logbuf size must be greater than or equal to log stripe size"); return XFS_ERROR(EINVAL); @@ -347,6 +351,10 @@ xfs_finish_flags( } } + if (XFS_SB_VERSION_HASATTR2(&mp->m_sb)) { + mp->m_flags |= XFS_MOUNT_ATTR2; + } + /* * prohibit r/w mounts of read-only filesystems */ @@ -382,10 +390,6 @@ xfs_finish_flags( return XFS_ERROR(EINVAL); } - if (XFS_SB_VERSION_HASATTR2(&mp->m_sb)) { - mp->m_flags &= ~XFS_MOUNT_COMPAT_ATTR; - } - return 0; } @@ -504,13 +508,13 @@ xfs_mount( if (error) goto error2; + if ((mp->m_flags & XFS_MOUNT_BARRIER) && !(vfsp->vfs_flag & VFS_RDONLY)) + xfs_mountfs_check_barriers(mp); + error = XFS_IOINIT(vfsp, args, flags); if (error) goto error2; - if ((args->flags & XFSMNT_BARRIER) && - !(XFS_MTOVFS(mp)->vfs_flag & VFS_RDONLY)) - xfs_mountfs_check_barriers(mp); return 0; error2: @@ -655,6 +659,11 @@ xfs_mntupdate( else mp->m_flags &= ~XFS_MOUNT_NOATIME; + if (args->flags & XFSMNT_BARRIER) + mp->m_flags |= XFS_MOUNT_BARRIER; + else + mp->m_flags &= ~XFS_MOUNT_BARRIER; + if ((vfsp->vfs_flag & VFS_RDONLY) && !(*flags & MS_RDONLY)) { vfsp->vfs_flag &= ~VFS_RDONLY; @@ -1634,6 +1643,7 @@ xfs_vget( #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and * unwritten extent conversion */ +#define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ #define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */ #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ @@ -1680,7 +1690,6 @@ xfs_parseargs( int iosize; args->flags2 |= XFSMNT2_COMPAT_IOSIZE; - args->flags |= XFSMNT_COMPAT_ATTR; #if 0 /* XXX: off by default, until some remaining issues ironed out */ args->flags |= XFSMNT_IDELETE; /* default to on */ @@ -1806,6 +1815,8 @@ xfs_parseargs( args->flags |= XFSMNT_NOUUID; } else if (!strcmp(this_char, MNTOPT_BARRIER)) { args->flags |= XFSMNT_BARRIER; + } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { + args->flags &= ~XFSMNT_BARRIER; } else if (!strcmp(this_char, MNTOPT_IKEEP)) { args->flags &= ~XFSMNT_IDELETE; } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { @@ -1815,9 +1826,9 @@ xfs_parseargs( } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { args->flags2 |= XFSMNT2_COMPAT_IOSIZE; } else if (!strcmp(this_char, MNTOPT_ATTR2)) { - args->flags &= ~XFSMNT_COMPAT_ATTR; + args->flags |= XFSMNT_ATTR2; } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { - args->flags |= XFSMNT_COMPAT_ATTR; + args->flags &= ~XFSMNT_ATTR2; } else if (!strcmp(this_char, "osyncisdsync")) { /* no-op, this is now the default */ printk("XFS: osyncisdsync is now the default, option is deprecated.\n"); @@ -1892,7 +1903,6 @@ xfs_showargs( { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, { XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC }, - { XFS_MOUNT_BARRIER, "," MNTOPT_BARRIER }, { XFS_MOUNT_IDELETE, "," MNTOPT_NOIKEEP }, { 0, NULL } }; @@ -1914,33 +1924,28 @@ xfs_showargs( if (mp->m_logbufs > 0) seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); - if (mp->m_logbsize > 0) seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); if (mp->m_logname) seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); - if (mp->m_rtname) seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); if (mp->m_dalign > 0) seq_printf(m, "," MNTOPT_SUNIT "=%d", (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); - if (mp->m_swidth > 0) seq_printf(m, "," MNTOPT_SWIDTH "=%d", (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); - if (!(mp->m_flags & XFS_MOUNT_COMPAT_ATTR)) - seq_printf(m, "," MNTOPT_ATTR2); - if (!(mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)) seq_printf(m, "," MNTOPT_LARGEIO); + if (mp->m_flags & XFS_MOUNT_BARRIER) + seq_printf(m, "," MNTOPT_BARRIER); if (!(vfsp->vfs_flag & VFS_32BITINODES)) seq_printf(m, "," MNTOPT_64BITINODE); - if (vfsp->vfs_flag & VFS_GRPID) seq_printf(m, "," MNTOPT_GRPID); @@ -1959,6 +1964,7 @@ xfs_freeze( /* Push the superblock and write an unmount record */ xfs_log_unmount_write(mp); xfs_unmountfs_writesb(mp); + xfs_fs_log_dummy(mp); } diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index e03fa2a..f891634 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -182,8 +182,7 @@ xfs_getattr( break; } - vap->va_atime.tv_sec = ip->i_d.di_atime.t_sec; - vap->va_atime.tv_nsec = ip->i_d.di_atime.t_nsec; + vn_atime_to_timespec(vp, &vap->va_atime); vap->va_mtime.tv_sec = ip->i_d.di_mtime.t_sec; vap->va_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; vap->va_ctime.tv_sec = ip->i_d.di_ctime.t_sec; @@ -541,24 +540,6 @@ xfs_setattr( } /* - * Can't set extent size unless the file is marked, or - * about to be marked as a realtime file. - * - * This check will be removed when fixed size extents - * with buffered data writes is implemented. - * - */ - if ((mask & XFS_AT_EXTSIZE) && - ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != - vap->va_extsize) && - (!((ip->i_d.di_flags & XFS_DIFLAG_REALTIME) || - ((mask & XFS_AT_XFLAGS) && - (vap->va_xflags & XFS_XFLAG_REALTIME))))) { - code = XFS_ERROR(EINVAL); - goto error_return; - } - - /* * Can't change realtime flag if any extents are allocated. */ if ((ip->i_d.di_nextents || ip->i_delayed_blks) && @@ -820,13 +801,17 @@ xfs_setattr( di_flags |= XFS_DIFLAG_RTINHERIT; if (vap->va_xflags & XFS_XFLAG_NOSYMLINKS) di_flags |= XFS_DIFLAG_NOSYMLINKS; - } else { + if (vap->va_xflags & XFS_XFLAG_EXTSZINHERIT) + di_flags |= XFS_DIFLAG_EXTSZINHERIT; + } else if ((ip->i_d.di_mode & S_IFMT) == S_IFREG) { if (vap->va_xflags & XFS_XFLAG_REALTIME) { di_flags |= XFS_DIFLAG_REALTIME; ip->i_iocore.io_flags |= XFS_IOCORE_RT; } else { ip->i_iocore.io_flags &= ~XFS_IOCORE_RT; } + if (vap->va_xflags & XFS_XFLAG_EXTSIZE) + di_flags |= XFS_DIFLAG_EXTSIZE; } ip->i_d.di_flags = di_flags; } @@ -996,10 +981,6 @@ xfs_readlink( goto error_return; } - if (!(ioflags & IO_INVIS)) { - xfs_ichgtime(ip, XFS_ICHGTIME_ACC); - } - /* * See if the symlink is stored inline. */ @@ -1231,7 +1212,8 @@ xfs_inactive_free_eofblocks( xfs_iunlock(ip, XFS_ILOCK_SHARED); if (!error && (nimaps != 0) && - (imap.br_startblock != HOLESTARTBLOCK)) { + (imap.br_startblock != HOLESTARTBLOCK || + ip->i_delayed_blks)) { /* * Attach the dquots to the inode up front. */ @@ -1566,9 +1548,11 @@ xfs_release( if (ip->i_d.di_nlink != 0) { if ((((ip->i_d.di_mode & S_IFMT) == S_IFREG) && - ((ip->i_d.di_size > 0) || (VN_CACHED(vp) > 0)) && + ((ip->i_d.di_size > 0) || (VN_CACHED(vp) > 0 || + ip->i_delayed_blks > 0)) && (ip->i_df.if_flags & XFS_IFEXTENTS)) && - (!(ip->i_d.di_flags & (XFS_DIFLAG_PREALLOC|XFS_DIFLAG_APPEND)))) { + (!(ip->i_d.di_flags & + (XFS_DIFLAG_PREALLOC | XFS_DIFLAG_APPEND)))) { if ((error = xfs_inactive_free_eofblocks(mp, ip))) return (error); /* Update linux inode block count after free above */ @@ -1625,7 +1609,8 @@ xfs_inactive( * only one with a reference to the inode. */ truncate = ((ip->i_d.di_nlink == 0) && - ((ip->i_d.di_size != 0) || (ip->i_d.di_nextents > 0)) && + ((ip->i_d.di_size != 0) || (ip->i_d.di_nextents > 0) || + (ip->i_delayed_blks > 0)) && ((ip->i_d.di_mode & S_IFMT) == S_IFREG)); mp = ip->i_mount; @@ -1643,10 +1628,12 @@ xfs_inactive( if (ip->i_d.di_nlink != 0) { if ((((ip->i_d.di_mode & S_IFMT) == S_IFREG) && - ((ip->i_d.di_size > 0) || (VN_CACHED(vp) > 0)) && - (ip->i_df.if_flags & XFS_IFEXTENTS)) && - (!(ip->i_d.di_flags & (XFS_DIFLAG_PREALLOC|XFS_DIFLAG_APPEND)) || - (ip->i_delayed_blks != 0))) { + ((ip->i_d.di_size > 0) || (VN_CACHED(vp) > 0 || + ip->i_delayed_blks > 0)) && + (ip->i_df.if_flags & XFS_IFEXTENTS) && + (!(ip->i_d.di_flags & + (XFS_DIFLAG_PREALLOC | XFS_DIFLAG_APPEND)) || + (ip->i_delayed_blks != 0)))) { if ((error = xfs_inactive_free_eofblocks(mp, ip))) return (VN_INACTIVE_CACHE); /* Update linux inode block count after free above */ @@ -2590,7 +2577,6 @@ xfs_link( int cancel_flags; int committed; vnode_t *target_dir_vp; - bhv_desc_t *src_bdp; int resblks; char *target_name = VNAME(dentry); int target_namelen; @@ -2603,8 +2589,7 @@ xfs_link( if (VN_ISDIR(src_vp)) return XFS_ERROR(EPERM); - src_bdp = vn_bhv_lookup_unlocked(VN_BHV_HEAD(src_vp), &xfs_vnodeops); - sip = XFS_BHVTOI(src_bdp); + sip = xfs_vtoi(src_vp); tdp = XFS_BHVTOI(target_dir_bdp); mp = tdp->i_mount; if (XFS_FORCED_SHUTDOWN(mp)) @@ -3237,7 +3222,6 @@ xfs_readdir( xfs_trans_t *tp = NULL; int error = 0; uint lock_mode; - xfs_off_t start_offset; vn_trace_entry(BHV_TO_VNODE(dir_bdp), __FUNCTION__, (inst_t *)__return_address); @@ -3248,11 +3232,7 @@ xfs_readdir( } lock_mode = xfs_ilock_map_shared(dp); - start_offset = uiop->uio_offset; error = XFS_DIR_GETDENTS(dp->i_mount, tp, dp, uiop, eofp); - if (start_offset != uiop->uio_offset) { - xfs_ichgtime(dp, XFS_ICHGTIME_ACC); - } xfs_iunlock_map_shared(dp, lock_mode); return error; } @@ -3829,7 +3809,12 @@ xfs_reclaim( vn_iowait(vp); ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); - ASSERT(VN_CACHED(vp) == 0); + + /* + * Make sure the atime in the XFS inode is correct before freeing the + * Linux inode. + */ + xfs_synchronize_atime(ip); /* If we have nothing to flush with this inode then complete the * teardown now, otherwise break the link between the xfs inode @@ -3999,42 +3984,36 @@ xfs_alloc_file_space( int alloc_type, int attr_flags) { + xfs_mount_t *mp = ip->i_mount; + xfs_off_t count; xfs_filblks_t allocated_fsb; xfs_filblks_t allocatesize_fsb; - int committed; - xfs_off_t count; - xfs_filblks_t datablocks; - int error; + xfs_extlen_t extsz, temp; + xfs_fileoff_t startoffset_fsb; xfs_fsblock_t firstfsb; - xfs_bmap_free_t free_list; - xfs_bmbt_irec_t *imapp; - xfs_bmbt_irec_t imaps[1]; - xfs_mount_t *mp; - int numrtextents; - int reccount; - uint resblks; + int nimaps; + int bmapi_flag; + int quota_flag; int rt; - int rtextsize; - xfs_fileoff_t startoffset_fsb; xfs_trans_t *tp; - int xfs_bmapi_flags; + xfs_bmbt_irec_t imaps[1], *imapp; + xfs_bmap_free_t free_list; + uint qblocks, resblks, resrtextents; + int committed; + int error; vn_trace_entry(XFS_ITOV(ip), __FUNCTION__, (inst_t *)__return_address); - mp = ip->i_mount; if (XFS_FORCED_SHUTDOWN(mp)) return XFS_ERROR(EIO); - /* - * determine if this is a realtime file - */ - if ((rt = XFS_IS_REALTIME_INODE(ip)) != 0) { - if (ip->i_d.di_extsize) - rtextsize = ip->i_d.di_extsize; - else - rtextsize = mp->m_sb.sb_rextsize; - } else - rtextsize = 0; + rt = XFS_IS_REALTIME_INODE(ip); + if (unlikely(rt)) { + if (!(extsz = ip->i_d.di_extsize)) + extsz = mp->m_sb.sb_rextsize; + } else { + extsz = ip->i_d.di_extsize; + } if ((error = XFS_QM_DQATTACH(mp, ip, 0))) return error; @@ -4045,8 +4024,8 @@ xfs_alloc_file_space( count = len; error = 0; imapp = &imaps[0]; - reccount = 1; - xfs_bmapi_flags = XFS_BMAPI_WRITE | (alloc_type ? XFS_BMAPI_PREALLOC : 0); + nimaps = 1; + bmapi_flag = XFS_BMAPI_WRITE | (alloc_type ? XFS_BMAPI_PREALLOC : 0); startoffset_fsb = XFS_B_TO_FSBT(mp, offset); allocatesize_fsb = XFS_B_TO_FSB(mp, count); @@ -4067,43 +4046,51 @@ xfs_alloc_file_space( } /* - * allocate file space until done or until there is an error + * Allocate file space until done or until there is an error */ retry: while (allocatesize_fsb && !error) { + xfs_fileoff_t s, e; + /* - * determine if reserving space on - * the data or realtime partition. + * Determine space reservations for data/realtime. */ - if (rt) { - xfs_fileoff_t s, e; - + if (unlikely(extsz)) { s = startoffset_fsb; - do_div(s, rtextsize); - s *= rtextsize; - e = roundup_64(startoffset_fsb + allocatesize_fsb, - rtextsize); - numrtextents = (int)(e - s) / mp->m_sb.sb_rextsize; - datablocks = 0; + do_div(s, extsz); + s *= extsz; + e = startoffset_fsb + allocatesize_fsb; + if ((temp = do_mod(startoffset_fsb, extsz))) + e += temp; + if ((temp = do_mod(e, extsz))) + e += extsz - temp; + } else { + s = 0; + e = allocatesize_fsb; + } + + if (unlikely(rt)) { + resrtextents = qblocks = (uint)(e - s); + resrtextents /= mp->m_sb.sb_rextsize; + resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0); + quota_flag = XFS_QMOPT_RES_RTBLKS; } else { - datablocks = allocatesize_fsb; - numrtextents = 0; + resrtextents = 0; + resblks = qblocks = \ + XFS_DIOSTRAT_SPACE_RES(mp, (uint)(e - s)); + quota_flag = XFS_QMOPT_RES_REGBLKS; } /* - * allocate and setup the transaction + * Allocate and setup the transaction. */ tp = xfs_trans_alloc(mp, XFS_TRANS_DIOSTRAT); - resblks = XFS_DIOSTRAT_SPACE_RES(mp, datablocks); - error = xfs_trans_reserve(tp, - resblks, - XFS_WRITE_LOG_RES(mp), - numrtextents, + error = xfs_trans_reserve(tp, resblks, + XFS_WRITE_LOG_RES(mp), resrtextents, XFS_TRANS_PERM_LOG_RES, XFS_WRITE_LOG_COUNT); - /* - * check for running out of space + * Check for running out of space */ if (error) { /* @@ -4114,8 +4101,8 @@ retry: break; } xfs_ilock(ip, XFS_ILOCK_EXCL); - error = XFS_TRANS_RESERVE_QUOTA(mp, tp, - ip->i_udquot, ip->i_gdquot, resblks, 0, 0); + error = XFS_TRANS_RESERVE_QUOTA_NBLKS(mp, tp, ip, + qblocks, 0, quota_flag); if (error) goto error1; @@ -4123,19 +4110,19 @@ retry: xfs_trans_ihold(tp, ip); /* - * issue the bmapi() call to allocate the blocks + * Issue the xfs_bmapi() call to allocate the blocks */ XFS_BMAP_INIT(&free_list, &firstfsb); error = xfs_bmapi(tp, ip, startoffset_fsb, - allocatesize_fsb, xfs_bmapi_flags, - &firstfsb, 0, imapp, &reccount, + allocatesize_fsb, bmapi_flag, + &firstfsb, 0, imapp, &nimaps, &free_list); if (error) { goto error0; } /* - * complete the transaction + * Complete the transaction */ error = xfs_bmap_finish(&tp, &free_list, firstfsb, &committed); if (error) { @@ -4150,7 +4137,7 @@ retry: allocated_fsb = imapp->br_blockcount; - if (reccount == 0) { + if (nimaps == 0) { error = XFS_ERROR(ENOSPC); break; } @@ -4173,9 +4160,11 @@ dmapi_enospc_check: return error; - error0: +error0: /* Cancel bmap, unlock inode, unreserve quota blocks, cancel trans */ xfs_bmap_cancel(&free_list); - error1: + XFS_TRANS_UNRESERVE_QUOTA_NBLKS(mp, tp, ip, qblocks, 0, quota_flag); + +error1: /* Just cancel transaction */ xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT); xfs_iunlock(ip, XFS_ILOCK_EXCL); goto dmapi_enospc_check; @@ -4420,8 +4409,8 @@ xfs_free_file_space( } xfs_ilock(ip, XFS_ILOCK_EXCL); error = XFS_TRANS_RESERVE_QUOTA(mp, tp, - ip->i_udquot, ip->i_gdquot, resblks, 0, rt ? - XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS); + ip->i_udquot, ip->i_gdquot, resblks, 0, + XFS_QMOPT_RES_REGBLKS); if (error) goto error1; |
