diff options
| -rw-r--r-- | fs/xfs/Makefile | 1 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_aops.c | 221 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_file.c | 854 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_iops.c | 10 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_linux.h | 1 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_lrw.c | 796 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_lrw.h | 29 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_sync.c | 10 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_trace.c | 16 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_trace.h | 22 | ||||
| -rw-r--r-- | fs/xfs/xfs_bmap.c | 220 | ||||
| -rw-r--r-- | fs/xfs/xfs_fs.h | 3 | ||||
| -rw-r--r-- | fs/xfs/xfs_iget.c | 19 | ||||
| -rw-r--r-- | fs/xfs/xfs_inode.c | 68 | ||||
| -rw-r--r-- | fs/xfs/xfs_inode.h | 3 | ||||
| -rw-r--r-- | fs/xfs/xfs_inode_item.c | 18 | ||||
| -rw-r--r-- | fs/xfs/xfs_itable.c | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_log.c | 106 | ||||
| -rw-r--r-- | fs/xfs/xfs_log.h | 16 | ||||
| -rw-r--r-- | fs/xfs/xfs_mount.c | 69 | ||||
| -rw-r--r-- | fs/xfs/xfs_mount.h | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_trans.c | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_trans.h | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_trans_buf.c | 216 | ||||
| -rw-r--r-- | fs/xfs/xfs_vnodeops.c | 107 | ||||
| -rw-r--r-- | fs/xfs/xfs_vnodeops.h | 15 |
26 files changed, 1344 insertions, 1484 deletions
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile index 5c5a366..b4769e4 100644 --- a/fs/xfs/Makefile +++ b/fs/xfs/Makefile @@ -105,7 +105,6 @@ xfs-y += $(addprefix $(XFS_LINUX)/, \ xfs_globals.o \ xfs_ioctl.o \ xfs_iops.o \ - xfs_lrw.o \ xfs_super.o \ xfs_sync.o \ xfs_xattr.o) diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c index 66abe36..9083357 100644 --- a/fs/xfs/linux-2.6/xfs_aops.c +++ b/fs/xfs/linux-2.6/xfs_aops.c @@ -39,6 +39,7 @@ #include "xfs_iomap.h" #include "xfs_vnodeops.h" #include "xfs_trace.h" +#include "xfs_bmap.h" #include <linux/mpage.h> #include <linux/pagevec.h> #include <linux/writeback.h> @@ -163,14 +164,17 @@ xfs_ioend_new_eof( } /* - * Update on-disk file size now that data has been written to disk. - * The current in-memory file size is i_size. If a write is beyond - * eof i_new_size will be the intended file size until i_size is - * updated. If this write does not extend all the way to the valid - * file size then restrict this update to the end of the write. + * Update on-disk file size now that data has been written to disk. The + * current in-memory file size is i_size. If a write is beyond eof i_new_size + * will be the intended file size until i_size is updated. If this write does + * not extend all the way to the valid file size then restrict this update to + * the end of the write. + * + * This function does not block as blocking on the inode lock in IO completion + * can lead to IO completion order dependency deadlocks.. If it can't get the + * inode ilock it will return EAGAIN. Callers must handle this. */ - -STATIC void +STATIC int xfs_setfilesize( xfs_ioend_t *ioend) { @@ -181,16 +185,40 @@ xfs_setfilesize( ASSERT(ioend->io_type != IOMAP_READ); if (unlikely(ioend->io_error)) - return; + return 0; + + if (!xfs_ilock_nowait(ip, XFS_ILOCK_EXCL)) + return EAGAIN; - xfs_ilock(ip, XFS_ILOCK_EXCL); isize = xfs_ioend_new_eof(ioend); if (isize) { ip->i_d.di_size = isize; - xfs_mark_inode_dirty_sync(ip); + xfs_mark_inode_dirty(ip); } xfs_iunlock(ip, XFS_ILOCK_EXCL); + return 0; +} + +/* + * Schedule IO completion handling on a xfsdatad if this was + * the final hold on this ioend. If we are asked to wait, + * flush the workqueue. + */ +STATIC void +xfs_finish_ioend( + xfs_ioend_t *ioend, + int wait) +{ + if (atomic_dec_and_test(&ioend->io_remaining)) { + struct workqueue_struct *wq; + + wq = (ioend->io_type == IOMAP_UNWRITTEN) ? + xfsconvertd_workqueue : xfsdatad_workqueue; + queue_work(wq, &ioend->io_work); + if (wait) + flush_workqueue(wq); + } } /* @@ -198,11 +226,11 @@ xfs_setfilesize( */ STATIC void xfs_end_io( - struct work_struct *work) + struct work_struct *work) { - xfs_ioend_t *ioend = - container_of(work, xfs_ioend_t, io_work); - struct xfs_inode *ip = XFS_I(ioend->io_inode); + xfs_ioend_t *ioend = container_of(work, xfs_ioend_t, io_work); + struct xfs_inode *ip = XFS_I(ioend->io_inode); + int error = 0; /* * For unwritten extents we need to issue transactions to convert a @@ -210,7 +238,6 @@ xfs_end_io( */ if (ioend->io_type == IOMAP_UNWRITTEN && likely(!ioend->io_error && !XFS_FORCED_SHUTDOWN(ip->i_mount))) { - int error; error = xfs_iomap_write_unwritten(ip, ioend->io_offset, ioend->io_size); @@ -222,30 +249,23 @@ xfs_end_io( * We might have to update the on-disk file size after extending * writes. */ - if (ioend->io_type != IOMAP_READ) - xfs_setfilesize(ioend); - xfs_destroy_ioend(ioend); -} - -/* - * Schedule IO completion handling on a xfsdatad if this was - * the final hold on this ioend. If we are asked to wait, - * flush the workqueue. - */ -STATIC void -xfs_finish_ioend( - xfs_ioend_t *ioend, - int wait) -{ - if (atomic_dec_and_test(&ioend->io_remaining)) { - struct workqueue_struct *wq; - - wq = (ioend->io_type == IOMAP_UNWRITTEN) ? - xfsconvertd_workqueue : xfsdatad_workqueue; - queue_work(wq, &ioend->io_work); - if (wait) - flush_workqueue(wq); + if (ioend->io_type != IOMAP_READ) { + error = xfs_setfilesize(ioend); + ASSERT(!error || error == EAGAIN); } + + /* + * If we didn't complete processing of the ioend, requeue it to the + * tail of the workqueue for another attempt later. Otherwise destroy + * it. + */ + if (error == EAGAIN) { + atomic_inc(&ioend->io_remaining); + xfs_finish_ioend(ioend, 0); + /* ensure we don't spin on blocked ioends */ + delay(1); + } else + xfs_destroy_ioend(ioend); } /* @@ -341,7 +361,7 @@ xfs_submit_ioend_bio( * but don't update the inode size until I/O completion. */ if (xfs_ioend_new_eof(ioend)) - xfs_mark_inode_dirty_sync(XFS_I(ioend->io_inode)); + xfs_mark_inode_dirty(XFS_I(ioend->io_inode)); submit_bio(wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC_PLUG : WRITE, bio); @@ -874,6 +894,118 @@ xfs_cluster_write( } } +STATIC void +xfs_vm_invalidatepage( + struct page *page, + unsigned long offset) +{ + trace_xfs_invalidatepage(page->mapping->host, page, offset); + block_invalidatepage(page, offset); +} + +/* + * If the page has delalloc buffers on it, we need to punch them out before we + * invalidate the page. If we don't, we leave a stale delalloc mapping on the + * inode that can trip a BUG() in xfs_get_blocks() later on if a direct IO read + * is done on that same region - the delalloc extent is returned when none is + * supposed to be there. + * + * We prevent this by truncating away the delalloc regions on the page before + * invalidating it. Because they are delalloc, we can do this without needing a + * transaction. Indeed - if we get ENOSPC errors, we have to be able to do this + * truncation without a transaction as there is no space left for block + * reservation (typically why we see a ENOSPC in writeback). + * + * This is not a performance critical path, so for now just do the punching a + * buffer head at a time. + */ +STATIC void +xfs_aops_discard_page( + struct page *page) +{ + struct inode *inode = page->mapping->host; + struct xfs_inode *ip = XFS_I(inode); + struct buffer_head *bh, *head; + loff_t offset = page_offset(page); + ssize_t len = 1 << inode->i_blkbits; + + if (!xfs_is_delayed_page(page, IOMAP_DELAY)) + goto out_invalidate; + + xfs_fs_cmn_err(CE_ALERT, ip->i_mount, + "page discard on page %p, inode 0x%llx, offset %llu.", + page, ip->i_ino, offset); + + xfs_ilock(ip, XFS_ILOCK_EXCL); + bh = head = page_buffers(page); + do { + int done; + xfs_fileoff_t offset_fsb; + xfs_bmbt_irec_t imap; + int nimaps = 1; + int error; + xfs_fsblock_t firstblock; + xfs_bmap_free_t flist; + + if (!buffer_delay(bh)) + goto next_buffer; + + offset_fsb = XFS_B_TO_FSBT(ip->i_mount, offset); + + /* + * Map the range first and check that it is a delalloc extent + * before trying to unmap the range. Otherwise we will be + * trying to remove a real extent (which requires a + * transaction) or a hole, which is probably a bad idea... + */ + error = xfs_bmapi(NULL, ip, offset_fsb, 1, + XFS_BMAPI_ENTIRE, NULL, 0, &imap, + &nimaps, NULL, NULL); + + if (error) { + /* something screwed, just bail */ + xfs_fs_cmn_err(CE_ALERT, ip->i_mount, + "page discard failed delalloc mapping lookup."); + break; + } + if (!nimaps) { + /* nothing there */ + goto next_buffer; + } + if (imap.br_startblock != DELAYSTARTBLOCK) { + /* been converted, ignore */ + goto next_buffer; + } + WARN_ON(imap.br_blockcount == 0); + + /* + * Note: while we initialise the firstblock/flist pair, they + * should never be used because blocks should never be + * allocated or freed for a delalloc extent and hence we need + * don't cancel or finish them after the xfs_bunmapi() call. + */ + xfs_bmap_init(&flist, &firstblock); + error = xfs_bunmapi(NULL, ip, offset_fsb, 1, 0, 1, &firstblock, + &flist, NULL, &done); + + ASSERT(!flist.xbf_count && !flist.xbf_first); + if (error) { + /* something screwed, just bail */ + xfs_fs_cmn_err(CE_ALERT, ip->i_mount, + "page discard unable to remove delalloc mapping."); + break; + } +next_buffer: + offset += len; + + } while ((bh = bh->b_this_page) != head); + + xfs_iunlock(ip, XFS_ILOCK_EXCL); +out_invalidate: + xfs_vm_invalidatepage(page, 0); + return; +} + /* * Calling this without startio set means we are being asked to make a dirty * page ready for freeing it's buffers. When called with startio set then @@ -1125,7 +1257,7 @@ error: */ if (err != -EAGAIN) { if (!unmapped) - block_invalidatepage(page, 0); + xfs_aops_discard_page(page); ClearPageUptodate(page); } return err; @@ -1535,15 +1667,6 @@ xfs_vm_readpages( return mpage_readpages(mapping, pages, nr_pages, xfs_get_blocks); } -STATIC void -xfs_vm_invalidatepage( - struct page *page, - unsigned long offset) -{ - trace_xfs_invalidatepage(page->mapping->host, page, offset); - block_invalidatepage(page, offset); -} - const struct address_space_operations xfs_address_space_operations = { .readpage = xfs_vm_readpage, .readpages = xfs_vm_readpages, diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c index e4caeb2..42dd3bc 100644 --- a/fs/xfs/linux-2.6/xfs_file.c +++ b/fs/xfs/linux-2.6/xfs_file.c @@ -16,6 +16,7 @@ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include "xfs.h" +#include "xfs_fs.h" #include "xfs_bit.h" #include "xfs_log.h" #include "xfs_inum.h" @@ -34,52 +35,279 @@ #include "xfs_dir2_sf.h" #include "xfs_dinode.h" #include "xfs_inode.h" +#include "xfs_inode_item.h" +#include "xfs_bmap.h" #include "xfs_error.h" #include "xfs_rw.h" #include "xfs_vnodeops.h" #include "xfs_da_btree.h" #include "xfs_ioctl.h" +#include "xfs_trace.h" #include <linux/dcache.h> static const struct vm_operations_struct xfs_file_vm_ops; -STATIC ssize_t -xfs_file_aio_read( - struct kiocb *iocb, - const struct iovec *iov, - unsigned long nr_segs, - loff_t pos) +/* + * xfs_iozero + * + * xfs_iozero clears the specified range of buffer supplied, + * and marks all the affected blocks as valid and modified. If + * an affected block is not allocated, it will be allocated. If + * an affected block is not completely overwritten, and is not + * valid before the operation, it will be read from disk before + * being partially zeroed. + */ +STATIC int +xfs_iozero( + struct xfs_inode *ip, /* inode */ + loff_t pos, /* offset in file */ + size_t count) /* size of data to zero */ { - struct file *file = iocb->ki_filp; - int ioflags = 0; + struct page *page; + struct address_space *mapping; + int status; - BUG_ON(iocb->ki_pos != pos); - if (unlikely(file->f_flags & O_DIRECT)) - ioflags |= IO_ISDIRECT; - if (file->f_mode & FMODE_NOCMTIME) - ioflags |= IO_INVIS; - return xfs_read(XFS_I(file->f_path.dentry->d_inode), iocb, iov, - nr_segs, &iocb->ki_pos, ioflags); + mapping = VFS_I(ip)->i_mapping; + do { + unsigned offset, bytes; + void *fsdata; + + offset = (pos & (PAGE_CACHE_SIZE -1)); /* Within page */ + bytes = PAGE_CACHE_SIZE - offset; + if (bytes > count) + bytes = count; + + status = pagecache_write_begin(NULL, mapping, pos, bytes, + AOP_FLAG_UNINTERRUPTIBLE, + &page, &fsdata); + if (status) + break; + + zero_user(page, offset, bytes); + + status = pagecache_write_end(NULL, mapping, pos, bytes, bytes, + page, fsdata); + WARN_ON(status <= 0); /* can't return less than zero! */ + pos += bytes; + count -= bytes; + status = 0; + } while (count); + + return (-status); +} + +STATIC int +xfs_file_fsync( + struct file *file, + struct dentry *dentry, + int datasync) +{ + struct xfs_inode *ip = XFS_I(dentry->d_inode); + struct xfs_trans *tp; + int error = 0; + int log_flushed = 0; + + xfs_itrace_entry(ip); + + if (XFS_FORCED_SHUTDOWN(ip->i_mount)) + return -XFS_ERROR(EIO); + + xfs_iflags_clear(ip, XFS_ITRUNCATED); + + /* + * We always need to make sure that the required inode state is safe on + * disk. The inode might be clean but we still might need to force the + * log because of committed transactions that haven't hit the disk yet. + * Likewise, there could be unflushed non-transactional changes to the + * inode core that have to go to disk and this requires us to issue + * a synchronous transaction to capture these changes correctly. + * + * This code relies on the assumption that if the i_update_core field + * of the inode is clear and the inode is unpinned then it is clean + * and no action is required. + */ + xfs_ilock(ip, XFS_ILOCK_SHARED); + + /* + * First check if the VFS inode is marked dirty. All the dirtying + * of non-transactional updates no goes through mark_inode_dirty*, + * which allows us to distinguish beteeen pure timestamp updates + * and i_size updates which need to be caught for fdatasync. + * After that also theck for the dirty state in the XFS inode, which + * might gets cleared when the inode gets written out via the AIL + * or xfs_iflush_cluster. + */ + if (((dentry->d_inode->i_state & I_DIRTY_DATASYNC) || + ((dentry->d_inode->i_state & I_DIRTY_SYNC) && !datasync)) && + ip->i_update_core) { + /* + * Kick off a transaction to log the inode core to get the + * updates. The sync transaction will also force the log. + */ + xfs_iunlock(ip, XFS_ILOCK_SHARED); + tp = xfs_trans_alloc(ip->i_mount, XFS_TRANS_FSYNC_TS); + error = xfs_trans_reserve(tp, 0, + XFS_FSYNC_TS_LOG_RES(ip->i_mount), 0, 0, 0); + if (error) { + xfs_trans_cancel(tp, 0); + return -error; + } + xfs_ilock(ip, XFS_ILOCK_EXCL); + + /* + * Note - it's possible that we might have pushed ourselves out + * of the way during trans_reserve which would flush the inode. + * But there's no guarantee that the inode buffer has actually + * gone out yet (it's delwri). Plus the buffer could be pinned + * anyway if it's part of an inode in another recent + * transaction. So we play it safe and fire off the + * transaction anyway. + */ + 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); + error = _xfs_trans_commit(tp, 0, &log_flushed); + + xfs_iunlock(ip, XFS_ILOCK_EXCL); + } else { + /* + * Timestamps/size haven't changed since last inode flush or + * inode transaction commit. That means either nothing got + * written or a transaction committed which caught the updates. + * If the latter happened and the transaction hasn't hit the + * disk yet, the inode will be still be pinned. If it is, + * force the log. + */ + if (xfs_ipincount(ip)) { + error = _xfs_log_force_lsn(ip->i_mount, + ip->i_itemp->ili_last_lsn, + XFS_LOG_SYNC, &log_flushed); + } + xfs_iunlock(ip, XFS_ILOCK_SHARED); + } + + if (ip->i_mount->m_flags & XFS_MOUNT_BARRIER) { + /* + * If the log write didn't issue an ordered tag we need + * to flush the disk cache for the data device now. + */ + if (!log_flushed) + xfs_blkdev_issue_flush(ip->i_mount->m_ddev_targp); + + /* + * If this inode is on the RT dev we need to flush that + * cache as well. + */ + if (XFS_IS_REALTIME_INODE(ip)) + xfs_blkdev_issue_flush(ip->i_mount->m_rtdev_targp); + } + + return -error; } STATIC ssize_t -xfs_file_aio_write( +xfs_file_aio_read( struct kiocb *iocb, - const struct iovec *iov, + const struct iovec *iovp, unsigned long nr_segs, loff_t pos) { struct file *file = iocb->ki_filp; + struct inode *inode = file->f_mapping->host; + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + size_t size = 0; + ssize_t ret = 0; int ioflags = 0; + xfs_fsize_t n; + unsigned long seg; + + XFS_STATS_INC(xs_read_calls); BUG_ON(iocb->ki_pos != pos); + if (unlikely(file->f_flags & O_DIRECT)) ioflags |= IO_ISDIRECT; if (file->f_mode & FMODE_NOCMTIME) ioflags |= IO_INVIS; - return xfs_write(XFS_I(file->f_mapping->host), iocb, iov, nr_segs, - &iocb->ki_pos, ioflags); + + /* START copy & waste from filemap.c */ + for (seg = 0; seg < nr_segs; seg++) { + const struct iovec *iv = &iovp[seg]; + + /* + * If any segment has a negative length, or the cumulative + * length ever wraps negative then return -EINVAL. + */ + size += iv->iov_len; + if (unlikely((ssize_t)(size|iv->iov_len) < 0)) + return XFS_ERROR(-EINVAL); + } + /* END copy & waste from filemap.c */ + + if (unlikely(ioflags & IO_ISDIRECT)) { + xfs_buftarg_t *target = + XFS_IS_REALTIME_INODE(ip) ? + mp->m_rtdev_targp : mp->m_ddev_targp; + if ((iocb->ki_pos & target->bt_smask) || + (size & target->bt_smask)) { + if (iocb->ki_pos == ip->i_size) + return 0; + return -XFS_ERROR(EINVAL); + } + } + + n = XFS_MAXIOFFSET(mp) - iocb->ki_pos; + if (n <= 0 || size == 0) + return 0; + + if (n < size) + size = n; + + if (XFS_FORCED_SHUTDOWN(mp)) + return -EIO; + + if (unlikely(ioflags & IO_ISDIRECT)) + mutex_lock(&inode->i_mutex); + xfs_ilock(ip, XFS_IOLOCK_SHARED); + + if (DM_EVENT_ENABLED(ip, DM_EVENT_READ) && !(ioflags & IO_INVIS)) { + int dmflags = FILP_DELAY_FLAG(file) | DM_SEM_FLAG_RD(ioflags); + int iolock = XFS_IOLOCK_SHARED; + + ret = -XFS_SEND_DATA(mp, DM_EVENT_READ, ip, iocb->ki_pos, size, + dmflags, &iolock); + if (ret) { + xfs_iunlock(ip, XFS_IOLOCK_SHARED); + if (unlikely(ioflags & IO_ISDIRECT)) + mutex_unlock(&inode->i_mutex); + return ret; + } + } + + if (unlikely(ioflags & IO_ISDIRECT)) { + if (inode->i_mapping->nrpages) { + ret = -xfs_flushinval_pages(ip, + (iocb->ki_pos & PAGE_CACHE_MASK), + -1, FI_REMAPF_LOCKED); + } + mutex_unlock(&inode->i_mutex); + if (ret) { + xfs_iunlock(ip, XFS_IOLOCK_SHARED); + return ret; + } + } + + trace_xfs_file_read(ip, size, iocb->ki_pos, ioflags); + + ret = generic_file_aio_read(iocb, iovp, nr_segs, iocb->ki_pos); + if (ret > 0) + XFS_STATS_ADD(xs_read_bytes, ret); + + xfs_iunlock(ip, XFS_IOLOCK_SHARED); + return ret; } STATIC ssize_t @@ -87,16 +315,44 @@ xfs_file_splice_read( struct file *infilp, loff_t *ppos, struct pipe_inode_info *pipe, - size_t len, + size_t count, unsigned int flags) { + struct xfs_inode *ip = XFS_I(infilp->f_mapping->host); + struct xfs_mount *mp = ip->i_mount; int ioflags = 0; + ssize_t ret; + + XFS_STATS_INC(xs_read_calls); if (infilp->f_mode & FMODE_NOCMTIME) ioflags |= IO_INVIS; - return xfs_splice_read(XFS_I(infilp->f_path.dentry->d_inode), - infilp, ppos, pipe, len, flags, ioflags); + if (XFS_FORCED_SHUTDOWN(ip->i_mount)) + return -EIO; + + xfs_ilock(ip, XFS_IOLOCK_SHARED); + + if (DM_EVENT_ENABLED(ip, DM_EVENT_READ) && !(ioflags & IO_INVIS)) { + int iolock = XFS_IOLOCK_SHARED; + int error; + + error = XFS_SEND_DATA(mp, DM_EVENT_READ, ip, *ppos, count, + FILP_DELAY_FLAG(infilp), &iolock); + if (error) { + xfs_iunlock(ip, XFS_IOLOCK_SHARED); + return -error; + } + } + + trace_xfs_file_splice_read(ip, count, *ppos, ioflags); + + ret = generic_file_splice_read(infilp, ppos, pipe, count, flags); + if (ret > 0) + XFS_STATS_ADD(xs_read_bytes, ret); + + xfs_iunlock(ip, XFS_IOLOCK_SHARED); + return ret; } STATIC ssize_t @@ -104,16 +360,538 @@ xfs_file_splice_write( struct pipe_inode_info *pipe, struct file *outfilp, loff_t *ppos, - size_t len, + size_t count, unsigned int flags) { + struct inode *inode = outfilp->f_mapping->host; + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + xfs_fsize_t isize, new_size; int ioflags = 0; + ssize_t ret; + + XFS_STATS_INC(xs_write_calls); if (outfilp->f_mode & FMODE_NOCMTIME) ioflags |= IO_INVIS; - return xfs_splice_write(XFS_I(outfilp->f_path.dentry->d_inode), - pipe, outfilp, ppos, len, flags, ioflags); + if (XFS_FORCED_SHUTDOWN(ip->i_mount)) + return -EIO; + + xfs_ilock(ip, XFS_IOLOCK_EXCL); + + if (DM_EVENT_ENABLED(ip, DM_EVENT_WRITE) && !(ioflags & IO_INVIS)) { + int iolock = XFS_IOLOCK_EXCL; + int error; + + error = XFS_SEND_DATA(mp, DM_EVENT_WRITE, ip, *ppos, count, + FILP_DELAY_FLAG(outfilp), &iolock); + if (error) { + xfs_iunlock(ip, XFS_IOLOCK_EXCL); + return -error; + } + } + + new_size = *ppos + count; + + xfs_ilock(ip, XFS_ILOCK_EXCL); + if (new_size > ip->i_size) + ip->i_new_size = new_size; + xfs_iunlock(ip, XFS_ILOCK_EXCL); + + trace_xfs_file_splice_write(ip, count, *ppos, ioflags); + + ret = generic_file_splice_write(pipe, outfilp, ppos, count, flags); + if (ret > 0) + XFS_STATS_ADD(xs_write_bytes, ret); + + isize = i_size_read(inode); + if (unlikely(ret < 0 && ret != -EFAULT && *ppos > isize)) + *ppos = isize; + + if (*ppos > ip->i_size) { + xfs_ilock(ip, XFS_ILOCK_EXCL); + if (*ppos > ip->i_size) + ip->i_size = *ppos; + xfs_iunlock(ip, XFS_ILOCK_EXCL); + } + + if (ip->i_new_size) { + xfs_ilock(ip, XFS_ILOCK_EXCL); + ip->i_new_size = 0; + if (ip->i_d.di_size > ip->i_size) + ip->i_d.di_size = ip->i_size; + xfs_iunlock(ip, XFS_ILOCK_EXCL); + } + xfs_iunlock(ip, XFS_IOLOCK_EXCL); + return ret; +} + +/* + * This routine is called to handle zeroing any space in the last + * block of the file that is beyond the EOF. We do this since the + * size is being increased without writing anything to that block + * and we don't want anyone to read the garbage on the disk. + */ +STATIC int /* error (positive) */ +xfs_zero_last_block( + xfs_inode_t *ip, + xfs_fsize_t offset, + xfs_fsize_t isize) +{ + xfs_fileoff_t last_fsb; + xfs_mount_t *mp = ip->i_mount; + int nimaps; + int zero_offset; + int zero_len; + int error = 0; + xfs_bmbt_irec_t imap; + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + + 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. + */ + return 0; + } + + last_fsb = XFS_B_TO_FSBT(mp, isize); + nimaps = 1; + error = xfs_bmapi(NULL, ip, last_fsb, 1, 0, NULL, 0, &imap, + &nimaps, NULL, NULL); + if (error) { + return error; + } + ASSERT(nimaps > 0); + /* + * If the block underlying isize is just a hole, then there + * is nothing to zero. + */ + if (imap.br_startblock == HOLESTARTBLOCK) { + return 0; + } + /* + * Zero the part of the last block beyond the EOF, and write it + * out sync. We need to drop the ilock while we do this so we + * don't deadlock when the buffer cache calls back to us. + */ + xfs_iunlock(ip, XFS_ILOCK_EXCL); + + zero_len = mp->m_sb.sb_blocksize - zero_offset; + if (isize + zero_len > offset) + zero_len = offset - isize; + error = xfs_iozero(ip, isize, zero_len); + + xfs_ilock(ip, XFS_ILOCK_EXCL); + ASSERT(error >= 0); + return error; +} + +/* + * Zero any on disk space between the current EOF and the new, + * larger EOF. This handles the normal case of zeroing the remainder + * of the last block in the file and the unusual case of zeroing blocks + * out beyond the size of the file. This second case only happens + * with fixed size extents and when the system crashes before the inode + * size was updated but after blocks were allocated. If fill is set, + * then any holes in the range are filled and zeroed. If not, the holes + * are left alone as holes. + */ + +int /* error (positive) */ +xfs_zero_eof( + xfs_inode_t *ip, + xfs_off_t offset, /* starting I/O offset */ + xfs_fsize_t isize) /* current inode size */ +{ + xfs_mount_t *mp = ip->i_mount; + xfs_fileoff_t start_zero_fsb; + xfs_fileoff_t end_zero_fsb; + xfs_fileoff_t zero_count_fsb; + xfs_fileoff_t last_fsb; + xfs_fileoff_t zero_off; + xfs_fsize_t zero_len; + int nimaps; + int error = 0; + xfs_bmbt_irec_t imap; + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL)); + ASSERT(offset > isize); + + /* + * 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, offset, isize); + if (error) { + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL)); + return error; + } + + /* + * Calculate the range between the new size and the old + * where blocks needing to be zeroed may exist. To get the + * block where the last byte in the file currently resides, + * we need to subtract one from the size and truncate back + * to a block boundary. We subtract 1 in case the size is + * exactly on a block boundary. + */ + last_fsb = isize ? XFS_B_TO_FSBT(mp, isize - 1) : (xfs_fileoff_t)-1; + start_zero_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)isize); + end_zero_fsb = XFS_B_TO_FSBT(mp, offset - 1); + ASSERT((xfs_sfiloff_t)last_fsb < (xfs_sfiloff_t)start_zero_fsb); + if (last_fsb == end_zero_fsb) { + /* + * The size was only incremented on its last block. + * We took care of that above, so just return. + */ + return 0; + } + + ASSERT(start_zero_fsb <= end_zero_fsb); + while (start_zero_fsb <= end_zero_fsb) { + nimaps = 1; + zero_count_fsb = end_zero_fsb - start_zero_fsb + 1; + error = xfs_bmapi(NULL, ip, start_zero_fsb, zero_count_fsb, + 0, NULL, 0, &imap, &nimaps, NULL, NULL); + if (error) { + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL)); + return error; + } + ASSERT(nimaps > 0); + + if (imap.br_state == XFS_EXT_UNWRITTEN || + imap.br_startblock == HOLESTARTBLOCK) { + /* + * This loop handles initializing pages that were + * partially initialized by the code below this + * loop. It basically zeroes the part of the page + * that sits on a hole and sets the page as P_HOLE + * and calls remapf if it is a mapped file. + */ + start_zero_fsb = imap.br_startoff + imap.br_blockcount; + ASSERT(start_zero_fsb <= (end_zero_fsb + 1)); + continue; + } + + /* + * There are blocks we need to zero. + * Drop the inode lock while we're doing the I/O. + * We'll still have the iolock to protect us. + */ + xfs_iunlock(ip, XFS_ILOCK_EXCL); + + zero_off = XFS_FSB_TO_B(mp, start_zero_fsb); + zero_len = XFS_FSB_TO_B(mp, imap.br_blockcount); + + if ((zero_off + zero_len) > offset) + zero_len = offset - zero_off; + + error = xfs_iozero(ip, zero_off, zero_len); + if (error) { + goto out_lock; + } + + start_zero_fsb = imap.br_startoff + imap.br_blockcount; + ASSERT(start_zero_fsb <= (end_zero_fsb + 1)); + + xfs_ilock(ip, XFS_ILOCK_EXCL); + } + + return 0; + +out_lock: + xfs_ilock(ip, XFS_ILOCK_EXCL); + ASSERT(error >= 0); + return error; +} + +STATIC ssize_t +xfs_file_aio_write( + struct kiocb *iocb, + const struct iovec *iovp, + unsigned long nr_segs, + loff_t pos) +{ + struct file *file = iocb->ki_filp; + struct address_space *mapping = file->f_mapping; + struct inode *inode = mapping->host; + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + ssize_t ret = 0, error = 0; + int ioflags = 0; + xfs_fsize_t isize, new_size; + int iolock; + int eventsent = 0; + size_t ocount = 0, count; + int need_i_mutex; + + XFS_STATS_INC(xs_write_calls); + + BUG_ON(iocb->ki_pos != pos); + + if (unlikely(file->f_flags & O_DIRECT)) + ioflags |= IO_ISDIRECT; + if (file->f_mode & FMODE_NOCMTIME) + ioflags |= IO_INVIS; + + error = generic_segment_checks(iovp, &nr_segs, &ocount, VERIFY_READ); + if (error) + return error; + + count = ocount; + if (count == 0) + return 0; + + xfs_wait_for_freeze(mp, SB_FREEZE_WRITE); + + if (XFS_FORCED_SHUTDOWN(mp)) + return -EIO; + +relock: + if (ioflags & IO_ISDIRECT) { + iolock = XFS_IOLOCK_SHARED; + need_i_mutex = 0; + } else { + iolock = XFS_IOLOCK_EXCL; + need_i_mutex = 1; + mutex_lock(&inode->i_mutex); + } + + xfs_ilock(ip, XFS_ILOCK_EXCL|iolock); + +start: + error = -generic_write_checks(file, &pos, &count, + S_ISBLK(inode->i_mode)); + if (error) { + xfs_iunlock(ip, XFS_ILOCK_EXCL|iolock); + goto out_unlock_mutex; + } + + if ((DM_EVENT_ENABLED(ip, DM_EVENT_WRITE) && + !(ioflags & IO_INVIS) && !eventsent)) { + int dmflags = FILP_DELAY_FLAG(file); + + if (need_i_mutex) + dmflags |= DM_FLAGS_IMUX; + + xfs_iunlock(ip, XFS_ILOCK_EXCL); + error = XFS_SEND_DATA(ip->i_mount, DM_EVENT_WRITE, ip, + pos, count, dmflags, &iolock); + if (error) { + goto out_unlock_internal; + } + xfs_ilock(ip, XFS_ILOCK_EXCL); + eventsent = 1; + + /* + * The iolock was dropped and reacquired in XFS_SEND_DATA + * so we have to recheck the size when appending. + * We will only "goto start;" once, since having sent the + * event prevents another call to XFS_SEND_DATA, which is + * what allows the size to change in the first place. + */ + if ((file->f_flags & O_APPEND) && pos != ip->i_size) + goto start; + } + + if (ioflags & IO_ISDIRECT) { + xfs_buftarg_t *target = + XFS_IS_REALTIME_INODE(ip) ? + mp->m_rtdev_targp : mp->m_ddev_targp; + + if ((pos & target->bt_smask) || (count & target->bt_smask)) { + xfs_iunlock(ip, XFS_ILOCK_EXCL|iolock); + return XFS_ERROR(-EINVAL); + } + + if (!need_i_mutex && (mapping->nrpages || pos > ip->i_size)) { + xfs_iunlock(ip, XFS_ILOCK_EXCL|iolock); + iolock = XFS_IOLOCK_EXCL; + need_i_mutex = 1; + mutex_lock(&inode->i_mutex); + xfs_ilock(ip, XFS_ILOCK_EXCL|iolock); + goto start; + } + } + + new_size = pos + count; + if (new_size > ip->i_size) + ip->i_new_size = new_size; + + if (likely(!(ioflags & IO_INVIS))) + file_update_time(file); + + /* + * If the offset is beyond the size of the file, we have a couple + * of things to do. First, if there is already space allocated + * we need to either create holes or zero the disk or ... + * + * If there is a page where the previous size lands, we need + * to zero it out up to the new size. + */ + + if (pos > ip->i_size) { + error = xfs_zero_eof(ip, pos, ip->i_size); + if (error) { + xfs_iunlock(ip, XFS_ILOCK_EXCL); + goto out_unlock_internal; + } + } + xfs_iunlock(ip, XFS_ILOCK_EXCL); + + /* + * If we're writing the file then make sure to clear the + * setuid and setgid bits if the process is not being run + * by root. This keeps people from modifying setuid and + * setgid binaries. + */ + error = -file_remove_suid(file); + if (unlikely(error)) + goto out_unlock_internal; + + /* We can write back this queue in page reclaim */ + current->backing_dev_info = mapping->backing_dev_info; + + if ((ioflags & IO_ISDIRECT)) { + if (mapping->nrpages) { + WARN_ON(need_i_mutex == 0); + error = xfs_flushinval_pages(ip, + (pos & PAGE_CACHE_MASK), + -1, FI_REMAPF_LOCKED); + if (error) + goto out_unlock_internal; + } + + if (need_i_mutex) { + /* demote the lock now the cached pages are gone */ + xfs_ilock_demote(ip, XFS_IOLOCK_EXCL); + mutex_unlock(&inode->i_mutex); + + iolock = XFS_IOLOCK_SHARED; + need_i_mutex = 0; + } + + trace_xfs_file_direct_write(ip, count, iocb->ki_pos, ioflags); + ret = generic_file_direct_write(iocb, iovp, + &nr_segs, pos, &iocb->ki_pos, count, ocount); + + /* + * direct-io write to a hole: fall through to buffered I/O + * for completing the rest of the request. + */ + if (ret >= 0 && ret != count) { + XFS_STATS_ADD(xs_write_bytes, ret); + + pos += ret; + count -= ret; + + ioflags &= ~IO_ISDIRECT; + xfs_iunlock(ip, iolock); + goto relock; + } + } else { + int enospc = 0; + ssize_t ret2 = 0; + +write_retry: + trace_xfs_file_buffered_write(ip, count, iocb->ki_pos, ioflags); + ret2 = generic_file_buffered_write(iocb, iovp, nr_segs, + pos, &iocb->ki_pos, count, ret); + /* + * if we just got an ENOSPC, flush the inode now we + * aren't holding any page locks and retry *once* + */ + if (ret2 == -ENOSPC && !enospc) { + error = xfs_flush_pages(ip, 0, -1, 0, FI_NONE); + if (error) + goto out_unlock_internal; + enospc = 1; + goto write_retry; + } + ret = ret2; + } + + current->backing_dev_info = NULL; + + isize = i_size_read(inode); + if (unlikely(ret < 0 && ret != -EFAULT && iocb->ki_pos > isize)) + iocb->ki_pos = isize; + + if (iocb->ki_pos > ip->i_size) { + xfs_ilock(ip, XFS_ILOCK_EXCL); + if (iocb->ki_pos > ip->i_size) + ip->i_size = iocb->ki_pos; + xfs_iunlock(ip, XFS_ILOCK_EXCL); + } + + if (ret == -ENOSPC && + DM_EVENT_ENABLED(ip, DM_EVENT_NOSPACE) && !(ioflags & IO_INVIS)) { + xfs_iunlock(ip, iolock); + if (need_i_mutex) + mutex_unlock(&inode->i_mutex); + error = XFS_SEND_NAMESP(ip->i_mount, DM_EVENT_NOSPACE, ip, + DM_RIGHT_NULL, ip, DM_RIGHT_NULL, NULL, NULL, + 0, 0, 0); /* Delay flag intentionally unused */ + if (need_i_mutex) + mutex_lock(&inode->i_mutex); + xfs_ilock(ip, iolock); + if (error) + goto out_unlock_internal; + goto start; + } + + error = -ret; + if (ret <= 0) + goto out_unlock_internal; + + XFS_STATS_ADD(xs_write_bytes, ret); + + /* Handle various SYNC-type writes */ + if ((file->f_flags & O_DSYNC) || IS_SYNC(inode)) { + loff_t end = pos + ret - 1; + int error2; + + xfs_iunlock(ip, iolock); + if (need_i_mutex) + mutex_unlock(&inode->i_mutex); + + error2 = filemap_write_and_wait_range(mapping, pos, end); + if (!error) + error = error2; + if (need_i_mutex) + mutex_lock(&inode->i_mutex); + xfs_ilock(ip, iolock); + + error2 = -xfs_file_fsync(file, file->f_path.dentry, + (file->f_flags & __O_SYNC) ? 0 : 1); + if (!error) + error = error2; + } + + out_unlock_internal: + if (ip->i_new_size) { + xfs_ilock(ip, XFS_ILOCK_EXCL); + ip->i_new_size = 0; + /* + * If this was a direct or synchronous I/O that failed (such + * as ENOSPC) then part of the I/O may have been written to + * disk before the error occured. In this case the on-disk + * file size may have been adjusted beyond the in-memory file + * size and now needs to be truncated back. + */ + if (ip->i_d.di_size > ip->i_size) + ip->i_d.di_size = ip->i_size; + xfs_iunlock(ip, XFS_ILOCK_EXCL); + } + xfs_iunlock(ip, iolock); + out_unlock_mutex: + if (need_i_mutex) + mutex_unlock(&inode->i_mutex); + return -error; } STATIC int @@ -160,28 +938,6 @@ xfs_file_release( return -xfs_release(XFS_I(inode)); } -/* - * We ignore the datasync flag here because a datasync is effectively - * identical to an fsync. That is, datasync implies that we need to write - * only the metadata needed to be able to access the data that is written - * if we crash after the call completes. Hence if we are writing beyond - * EOF we have to log the inode size change as well, which makes it a - * full fsync. If we don't write beyond EOF, the inode core will be - * clean in memory and so we don't need to log the inode, just like - * fsync. - */ -STATIC int -xfs_file_fsync( - struct file *file, - struct dentry *dentry, - int datasync) -{ - struct xfs_inode *ip = XFS_I(dentry->d_inode); - - xfs_iflags_clear(ip, XFS_ITRUNCATED); - return -xfs_fsync(ip); -} - STATIC int xfs_file_readdir( struct file *filp, @@ -203,9 +959,9 @@ xfs_file_readdir( * * Try to give it an estimate that's good enough, maybe at some * point we can change the ->readdir prototype to include the - * buffer size. + * buffer size. For now we use the current glibc buffer size. */ - bufsize = (size_t)min_t(loff_t, PAGE_SIZE, ip->i_d.di_size); + bufsize = (size_t)min_t(loff_t, 32768, ip->i_d.di_size); error = xfs_readdir(ip, dirent, bufsize, (xfs_off_t *)&filp->f_pos, filldir); diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c index e8566bb..61a9960 100644 --- a/fs/xfs/linux-2.6/xfs_iops.c +++ b/fs/xfs/linux-2.6/xfs_iops.c @@ -91,6 +91,16 @@ xfs_mark_inode_dirty_sync( mark_inode_dirty_sync(inode); } +void +xfs_mark_inode_dirty( + xfs_inode_t *ip) +{ + struct inode *inode = VFS_I(ip); + + if (!(inode->i_state & (I_WILL_FREE|I_FREEING|I_CLEAR))) + mark_inode_dirty(inode); +} + /* * Change the requested timestamp in the given inode. * We don't lock across timestamp updates, and we don't log them but diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h index 5af0c81c..facfb32 100644 --- a/fs/xfs/linux-2.6/xfs_linux.h +++ b/fs/xfs/linux-2.6/xfs_linux.h @@ -88,7 +88,6 @@ #include <xfs_super.h> #include <xfs_globals.h> #include <xfs_fs_subr.h> -#include <xfs_lrw.h> #include <xfs_buf.h> /* diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c deleted file mode 100644 index eac6f80..0000000 --- a/fs/xfs/linux-2.6/xfs_lrw.c +++ /dev/null @@ -1,796 +0,0 @@ -/* - * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. - * 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. - * - * 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. - * - * You should have received a copy of the GNU 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 - */ -#include "xfs.h" -#include "xfs_fs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_trans.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_dir2.h" -#include "xfs_alloc.h" -#include "xfs_dmapi.h" -#include "xfs_quota.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_alloc_btree.h" -#include "xfs_ialloc_btree.h" -#include "xfs_dir2_sf.h" -#include "xfs_attr_sf.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_bmap.h" -#include "xfs_btree.h" -#include "xfs_ialloc.h" -#include "xfs_rtalloc.h" -#include "xfs_error.h" -#include "xfs_itable.h" -#include "xfs_rw.h" -#include "xfs_attr.h" -#include "xfs_inode_item.h" -#include "xfs_buf_item.h" -#include "xfs_utils.h" -#include "xfs_iomap.h" -#include "xfs_vnodeops.h" -#include "xfs_trace.h" - -#include <linux/capability.h> -#include <linux/writeback.h> - - -/* - * xfs_iozero - * - * xfs_iozero clears the specified range of buffer supplied, - * and marks all the affected blocks as valid and modified. If - * an affected block is not allocated, it will be allocated. If - * an affected block is not completely overwritten, and is not - * valid before the operation, it will be read from disk before - * being partially zeroed. - */ -STATIC int -xfs_iozero( - struct xfs_inode *ip, /* inode */ - loff_t pos, /* offset in file */ - size_t count) /* size of data to zero */ -{ - struct page *page; - struct address_space *mapping; - int status; - - mapping = VFS_I(ip)->i_mapping; - do { - unsigned offset, bytes; - void *fsdata; - - offset = (pos & (PAGE_CACHE_SIZE -1)); /* Within page */ - bytes = PAGE_CACHE_SIZE - offset; - if (bytes > count) - bytes = count; - - status = pagecache_write_begin(NULL, mapping, pos, bytes, - AOP_FLAG_UNINTERRUPTIBLE, - &page, &fsdata); - if (status) - break; - - zero_user(page, offset, bytes); - - status = pagecache_write_end(NULL, mapping, pos, bytes, bytes, - page, fsdata); - WARN_ON(status <= 0); /* can't return less than zero! */ - pos += bytes; - count -= bytes; - status = 0; - } while (count); - - return (-status); -} - -ssize_t /* bytes read, or (-) error */ -xfs_read( - xfs_inode_t *ip, - struct kiocb *iocb, - const struct iovec *iovp, - unsigned int segs, - loff_t *offset, - int ioflags) -{ - struct file *file = iocb->ki_filp; - struct inode *inode = file->f_mapping->host; - xfs_mount_t *mp = ip->i_mount; - size_t size = 0; - ssize_t ret = 0; - xfs_fsize_t n; - unsigned long seg; - - - XFS_STATS_INC(xs_read_calls); - - /* START copy & waste from filemap.c */ - for (seg = 0; seg < segs; seg++) { - const struct iovec *iv = &iovp[seg]; - - /* - * If any segment has a negative length, or the cumulative - * length ever wraps negative then return -EINVAL. - */ - size += iv->iov_len; - if (unlikely((ssize_t)(size|iv->iov_len) < 0)) - return XFS_ERROR(-EINVAL); - } - /* END copy & waste from filemap.c */ - - if (unlikely(ioflags & IO_ISDIRECT)) { - xfs_buftarg_t *target = - XFS_IS_REALTIME_INODE(ip) ? - mp->m_rtdev_targp : mp->m_ddev_targp; - if ((*offset & target->bt_smask) || - (size & target->bt_smask)) { - if (*offset == ip->i_size) { - return (0); - } - return -XFS_ERROR(EINVAL); - } - } - - n = XFS_MAXIOFFSET(mp) - *offset; - if ((n <= 0) || (size == 0)) - return 0; - - if (n < size) - size = n; - - if (XFS_FORCED_SHUTDOWN(mp)) - return -EIO; - - if (unlikely(ioflags & IO_ISDIRECT)) - mutex_lock(&inode->i_mutex); - xfs_ilock(ip, XFS_IOLOCK_SHARED); - - if (DM_EVENT_ENABLED(ip, DM_EVENT_READ) && !(ioflags & IO_INVIS)) { - int dmflags = FILP_DELAY_FLAG(file) | DM_SEM_FLAG_RD(ioflags); - int iolock = XFS_IOLOCK_SHARED; - - ret = -XFS_SEND_DATA(mp, DM_EVENT_READ, ip, *offset, size, - dmflags, &iolock); - if (ret) { - xfs_iunlock(ip, XFS_IOLOCK_SHARED); - if (unlikely(ioflags & IO_ISDIRECT)) - mutex_unlock(&inode->i_mutex); - return ret; - } - } - - if (unlikely(ioflags & IO_ISDIRECT)) { - if (inode->i_mapping->nrpages) - ret = -xfs_flushinval_pages(ip, (*offset & PAGE_CACHE_MASK), - -1, FI_REMAPF_LOCKED); - mutex_unlock(&inode->i_mutex); - if (ret) { - xfs_iunlock(ip, XFS_IOLOCK_SHARED); - return ret; - } - } - - trace_xfs_file_read(ip, size, *offset, ioflags); - - iocb->ki_pos = *offset; - ret = generic_file_aio_read(iocb, iovp, segs, *offset); - if (ret > 0) - XFS_STATS_ADD(xs_read_bytes, ret); - - xfs_iunlock(ip, XFS_IOLOCK_SHARED); - return ret; -} - -ssize_t -xfs_splice_read( - xfs_inode_t *ip, - struct file *infilp, - loff_t *ppos, - struct pipe_inode_info *pipe, - size_t count, - int flags, - int ioflags) -{ - xfs_mount_t *mp = ip->i_mount; - ssize_t ret; - - XFS_STATS_INC(xs_read_calls); - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) - return -EIO; - - xfs_ilock(ip, XFS_IOLOCK_SHARED); - - if (DM_EVENT_ENABLED(ip, DM_EVENT_READ) && !(ioflags & IO_INVIS)) { - int iolock = XFS_IOLOCK_SHARED; - int error; - - error = XFS_SEND_DATA(mp, DM_EVENT_READ, ip, *ppos, count, - FILP_DELAY_FLAG(infilp), &iolock); - if (error) { - xfs_iunlock(ip, XFS_IOLOCK_SHARED); - return -error; - } - } - - trace_xfs_file_splice_read(ip, count, *ppos, ioflags); - - ret = generic_file_splice_read(infilp, ppos, pipe, count, flags); - if (ret > 0) - XFS_STATS_ADD(xs_read_bytes, ret); - - xfs_iunlock(ip, XFS_IOLOCK_SHARED); - return ret; -} - -ssize_t -xfs_splice_write( - xfs_inode_t *ip, - struct pipe_inode_info *pipe, - struct file *outfilp, - loff_t *ppos, - size_t count, - int flags, - int ioflags) -{ - xfs_mount_t *mp = ip->i_mount; - ssize_t ret; - struct inode *inode = outfilp->f_mapping->host; - xfs_fsize_t isize, new_size; - - XFS_STATS_INC(xs_write_calls); - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) - return -EIO; - - xfs_ilock(ip, XFS_IOLOCK_EXCL); - - if (DM_EVENT_ENABLED(ip, DM_EVENT_WRITE) && !(ioflags & IO_INVIS)) { - int iolock = XFS_IOLOCK_EXCL; - int error; - - error = XFS_SEND_DATA(mp, DM_EVENT_WRITE, ip, *ppos, count, - FILP_DELAY_FLAG(outfilp), &iolock); - if (error) { - xfs_iunlock(ip, XFS_IOLOCK_EXCL); - return -error; - } - } - - new_size = *ppos + count; - - xfs_ilock(ip, XFS_ILOCK_EXCL); - if (new_size > ip->i_size) - ip->i_new_size = new_size; - xfs_iunlock(ip, XFS_ILOCK_EXCL); - - trace_xfs_file_splice_write(ip, count, *ppos, ioflags); - - ret = generic_file_splice_write(pipe, outfilp, ppos, count, flags); - if (ret > 0) - XFS_STATS_ADD(xs_write_bytes, ret); - - isize = i_size_read(inode); - if (unlikely(ret < 0 && ret != -EFAULT && *ppos > isize)) - *ppos = isize; - - if (*ppos > ip->i_size) { - xfs_ilock(ip, XFS_ILOCK_EXCL); - if (*ppos > ip->i_size) - ip->i_size = *ppos; - xfs_iunlock(ip, XFS_ILOCK_EXCL); - } - - if (ip->i_new_size) { - xfs_ilock(ip, XFS_ILOCK_EXCL); - ip->i_new_size = 0; - if (ip->i_d.di_size > ip->i_size) - ip->i_d.di_size = ip->i_size; - xfs_iunlock(ip, XFS_ILOCK_EXCL); - } - xfs_iunlock(ip, XFS_IOLOCK_EXCL); - return ret; -} - -/* - * This routine is called to handle zeroing any space in the last - * block of the file that is beyond the EOF. We do this since the - * size is being increased without writing anything to that block - * and we don't want anyone to read the garbage on the disk. - */ -STATIC int /* error (positive) */ -xfs_zero_last_block( - xfs_inode_t *ip, - xfs_fsize_t offset, - xfs_fsize_t isize) -{ - xfs_fileoff_t last_fsb; - xfs_mount_t *mp = ip->i_mount; - int nimaps; - int zero_offset; - int zero_len; - int error = 0; - xfs_bmbt_irec_t imap; - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - - 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. - */ - return 0; - } - - last_fsb = XFS_B_TO_FSBT(mp, isize); - nimaps = 1; - error = xfs_bmapi(NULL, ip, last_fsb, 1, 0, NULL, 0, &imap, - &nimaps, NULL, NULL); - if (error) { - return error; - } - ASSERT(nimaps > 0); - /* - * If the block underlying isize is just a hole, then there - * is nothing to zero. - */ - if (imap.br_startblock == HOLESTARTBLOCK) { - return 0; - } - /* - * Zero the part of the last block beyond the EOF, and write it - * out sync. We need to drop the ilock while we do this so we - * don't deadlock when the buffer cache calls back to us. - */ - xfs_iunlock(ip, XFS_ILOCK_EXCL); - - zero_len = mp->m_sb.sb_blocksize - zero_offset; - if (isize + zero_len > offset) - zero_len = offset - isize; - error = xfs_iozero(ip, isize, zero_len); - - xfs_ilock(ip, XFS_ILOCK_EXCL); - ASSERT(error >= 0); - return error; -} - -/* - * Zero any on disk space between the current EOF and the new, - * larger EOF. This handles the normal case of zeroing the remainder - * of the last block in the file and the unusual case of zeroing blocks - * out beyond the size of the file. This second case only happens - * with fixed size extents and when the system crashes before the inode - * size was updated but after blocks were allocated. If fill is set, - * then any holes in the range are filled and zeroed. If not, the holes - * are left alone as holes. - */ - -int /* error (positive) */ -xfs_zero_eof( - xfs_inode_t *ip, - xfs_off_t offset, /* starting I/O offset */ - xfs_fsize_t isize) /* current inode size */ -{ - xfs_mount_t *mp = ip->i_mount; - xfs_fileoff_t start_zero_fsb; - xfs_fileoff_t end_zero_fsb; - xfs_fileoff_t zero_count_fsb; - xfs_fileoff_t last_fsb; - xfs_fileoff_t zero_off; - xfs_fsize_t zero_len; - int nimaps; - int error = 0; - xfs_bmbt_irec_t imap; - - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL)); - ASSERT(offset > isize); - - /* - * 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, offset, isize); - if (error) { - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL)); - return error; - } - - /* - * Calculate the range between the new size and the old - * where blocks needing to be zeroed may exist. To get the - * block where the last byte in the file currently resides, - * we need to subtract one from the size and truncate back - * to a block boundary. We subtract 1 in case the size is - * exactly on a block boundary. - */ - last_fsb = isize ? XFS_B_TO_FSBT(mp, isize - 1) : (xfs_fileoff_t)-1; - start_zero_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)isize); - end_zero_fsb = XFS_B_TO_FSBT(mp, offset - 1); - ASSERT((xfs_sfiloff_t)last_fsb < (xfs_sfiloff_t)start_zero_fsb); - if (last_fsb == end_zero_fsb) { - /* - * The size was only incremented on its last block. - * We took care of that above, so just return. - */ - return 0; - } - - ASSERT(start_zero_fsb <= end_zero_fsb); - while (start_zero_fsb <= end_zero_fsb) { - nimaps = 1; - zero_count_fsb = end_zero_fsb - start_zero_fsb + 1; - error = xfs_bmapi(NULL, ip, start_zero_fsb, zero_count_fsb, - 0, NULL, 0, &imap, &nimaps, NULL, NULL); - if (error) { - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_IOLOCK_EXCL)); - return error; - } - ASSERT(nimaps > 0); - - if (imap.br_state == XFS_EXT_UNWRITTEN || - imap.br_startblock == HOLESTARTBLOCK) { - /* - * This loop handles initializing pages that were - * partially initialized by the code below this - * loop. It basically zeroes the part of the page - * that sits on a hole and sets the page as P_HOLE - * and calls remapf if it is a mapped file. - */ - start_zero_fsb = imap.br_startoff + imap.br_blockcount; - ASSERT(start_zero_fsb <= (end_zero_fsb + 1)); - continue; - } - - /* - * There are blocks we need to zero. - * Drop the inode lock while we're doing the I/O. - * We'll still have the iolock to protect us. - */ - xfs_iunlock(ip, XFS_ILOCK_EXCL); - - zero_off = XFS_FSB_TO_B(mp, start_zero_fsb); - zero_len = XFS_FSB_TO_B(mp, imap.br_blockcount); - - if ((zero_off + zero_len) > offset) - zero_len = offset - zero_off; - - error = xfs_iozero(ip, zero_off, zero_len); - if (error) { - goto out_lock; - } - - start_zero_fsb = imap.br_startoff + imap.br_blockcount; - ASSERT(start_zero_fsb <= (end_zero_fsb + 1)); - - xfs_ilock(ip, XFS_ILOCK_EXCL); - } - - return 0; - -out_lock: - xfs_ilock(ip, XFS_ILOCK_EXCL); - ASSERT(error >= 0); - return error; -} - -ssize_t /* bytes written, or (-) error */ -xfs_write( - struct xfs_inode *xip, - struct kiocb *iocb, - const struct iovec *iovp, - unsigned int nsegs, - loff_t *offset, - int ioflags) -{ - struct file *file = iocb->ki_filp; - struct address_space *mapping = file->f_mapping; - struct inode *inode = mapping->host; - unsigned long segs = nsegs; - xfs_mount_t *mp; - ssize_t ret = 0, error = 0; - xfs_fsize_t isize, new_size; - int iolock; - int eventsent = 0; - size_t ocount = 0, count; - loff_t pos; - int need_i_mutex; - - XFS_STATS_INC(xs_write_calls); - - error = generic_segment_checks(iovp, &segs, &ocount, VERIFY_READ); - if (error) - return error; - - count = ocount; - pos = *offset; - - if (count == 0) - return 0; - - mp = xip->i_mount; - - xfs_wait_for_freeze(mp, SB_FREEZE_WRITE); - - if (XFS_FORCED_SHUTDOWN(mp)) - return -EIO; - -relock: - if (ioflags & IO_ISDIRECT) { - iolock = XFS_IOLOCK_SHARED; - need_i_mutex = 0; - } else { - iolock = XFS_IOLOCK_EXCL; - need_i_mutex = 1; - mutex_lock(&inode->i_mutex); - } - - xfs_ilock(xip, XFS_ILOCK_EXCL|iolock); - -start: - error = -generic_write_checks(file, &pos, &count, - S_ISBLK(inode->i_mode)); - if (error) { - xfs_iunlock(xip, XFS_ILOCK_EXCL|iolock); - goto out_unlock_mutex; - } - - if ((DM_EVENT_ENABLED(xip, DM_EVENT_WRITE) && - !(ioflags & IO_INVIS) && !eventsent)) { - int dmflags = FILP_DELAY_FLAG(file); - - if (need_i_mutex) - dmflags |= DM_FLAGS_IMUX; - - xfs_iunlock(xip, XFS_ILOCK_EXCL); - error = XFS_SEND_DATA(xip->i_mount, DM_EVENT_WRITE, xip, - pos, count, dmflags, &iolock); - if (error) { - goto out_unlock_internal; - } - xfs_ilock(xip, XFS_ILOCK_EXCL); - eventsent = 1; - - /* - * The iolock was dropped and reacquired in XFS_SEND_DATA - * so we have to recheck the size when appending. - * We will only "goto start;" once, since having sent the - * event prevents another call to XFS_SEND_DATA, which is - * what allows the size to change in the first place. - */ - if ((file->f_flags & O_APPEND) && pos != xip->i_size) - goto start; - } - - if (ioflags & IO_ISDIRECT) { - xfs_buftarg_t *target = - XFS_IS_REALTIME_INODE(xip) ? - mp->m_rtdev_targp : mp->m_ddev_targp; - - if ((pos & target->bt_smask) || (count & target->bt_smask)) { - xfs_iunlock(xip, XFS_ILOCK_EXCL|iolock); - return XFS_ERROR(-EINVAL); - } - - if (!need_i_mutex && (mapping->nrpages || pos > xip->i_size)) { - xfs_iunlock(xip, XFS_ILOCK_EXCL|iolock); - iolock = XFS_IOLOCK_EXCL; - need_i_mutex = 1; - mutex_lock(&inode->i_mutex); - xfs_ilock(xip, XFS_ILOCK_EXCL|iolock); - goto start; - } - } - - new_size = pos + count; - if (new_size > xip->i_size) - xip->i_new_size = new_size; - - if (likely(!(ioflags & IO_INVIS))) - file_update_time(file); - - /* - * If the offset is beyond the size of the file, we have a couple - * of things to do. First, if there is already space allocated - * we need to either create holes or zero the disk or ... - * - * If there is a page where the previous size lands, we need - * to zero it out up to the new size. - */ - - if (pos > xip->i_size) { - error = xfs_zero_eof(xip, pos, xip->i_size); - if (error) { - xfs_iunlock(xip, XFS_ILOCK_EXCL); - goto out_unlock_internal; - } - } - xfs_iunlock(xip, XFS_ILOCK_EXCL); - - /* - * If we're writing the file then make sure to clear the - * setuid and setgid bits if the process is not being run - * by root. This keeps people from modifying setuid and - * setgid binaries. - */ - error = -file_remove_suid(file); - if (unlikely(error)) - goto out_unlock_internal; - - /* We can write back this queue in page reclaim */ - current->backing_dev_info = mapping->backing_dev_info; - - if ((ioflags & IO_ISDIRECT)) { - if (mapping->nrpages) { - WARN_ON(need_i_mutex == 0); - error = xfs_flushinval_pages(xip, - (pos & PAGE_CACHE_MASK), - -1, FI_REMAPF_LOCKED); - if (error) - goto out_unlock_internal; - } - - if (need_i_mutex) { - /* demote the lock now the cached pages are gone */ - xfs_ilock_demote(xip, XFS_IOLOCK_EXCL); - mutex_unlock(&inode->i_mutex); - - iolock = XFS_IOLOCK_SHARED; - need_i_mutex = 0; - } - - trace_xfs_file_direct_write(xip, count, *offset, ioflags); - ret = generic_file_direct_write(iocb, iovp, - &segs, pos, offset, count, ocount); - - /* - * direct-io write to a hole: fall through to buffered I/O - * for completing the rest of the request. - */ - if (ret >= 0 && ret != count) { - XFS_STATS_ADD(xs_write_bytes, ret); - - pos += ret; - count -= ret; - - ioflags &= ~IO_ISDIRECT; - xfs_iunlock(xip, iolock); - goto relock; - } - } else { - int enospc = 0; - ssize_t ret2 = 0; - -write_retry: - trace_xfs_file_buffered_write(xip, count, *offset, ioflags); - ret2 = generic_file_buffered_write(iocb, iovp, segs, - pos, offset, count, ret); - /* - * if we just got an ENOSPC, flush the inode now we - * aren't holding any page locks and retry *once* - */ - if (ret2 == -ENOSPC && !enospc) { - error = xfs_flush_pages(xip, 0, -1, 0, FI_NONE); - if (error) - goto out_unlock_internal; - enospc = 1; - goto write_retry; - } - ret = ret2; - } - - current->backing_dev_info = NULL; - - isize = i_size_read(inode); - if (unlikely(ret < 0 && ret != -EFAULT && *offset > isize)) - *offset = isize; - - if (*offset > xip->i_size) { - xfs_ilock(xip, XFS_ILOCK_EXCL); - if (*offset > xip->i_size) - xip->i_size = *offset; - xfs_iunlock(xip, XFS_ILOCK_EXCL); - } - - if (ret == -ENOSPC && - DM_EVENT_ENABLED(xip, DM_EVENT_NOSPACE) && !(ioflags & IO_INVIS)) { - xfs_iunlock(xip, iolock); - if (need_i_mutex) - mutex_unlock(&inode->i_mutex); - error = XFS_SEND_NAMESP(xip->i_mount, DM_EVENT_NOSPACE, xip, - DM_RIGHT_NULL, xip, DM_RIGHT_NULL, NULL, NULL, - 0, 0, 0); /* Delay flag intentionally unused */ - if (need_i_mutex) - mutex_lock(&inode->i_mutex); - xfs_ilock(xip, iolock); - if (error) - goto out_unlock_internal; - goto start; - } - - error = -ret; - if (ret <= 0) - goto out_unlock_internal; - - XFS_STATS_ADD(xs_write_bytes, ret); - - /* Handle various SYNC-type writes */ - if ((file->f_flags & O_DSYNC) || IS_SYNC(inode)) { - loff_t end = pos + ret - 1; - int error2; - - xfs_iunlock(xip, iolock); - if (need_i_mutex) - mutex_unlock(&inode->i_mutex); - - error2 = filemap_write_and_wait_range(mapping, pos, end); - if (!error) - error = error2; - if (need_i_mutex) - mutex_lock(&inode->i_mutex); - xfs_ilock(xip, iolock); - - error2 = xfs_fsync(xip); - if (!error) - error = error2; - } - - out_unlock_internal: - if (xip->i_new_size) { - xfs_ilock(xip, XFS_ILOCK_EXCL); - xip->i_new_size = 0; - /* - * If this was a direct or synchronous I/O that failed (such - * as ENOSPC) then part of the I/O may have been written to - * disk before the error occured. In this case the on-disk - * file size may have been adjusted beyond the in-memory file - * size and now needs to be truncated back. - */ - if (xip->i_d.di_size > xip->i_size) - xip->i_d.di_size = xip->i_size; - xfs_iunlock(xip, XFS_ILOCK_EXCL); - } - xfs_iunlock(xip, iolock); - out_unlock_mutex: - if (need_i_mutex) - mutex_unlock(&inode->i_mutex); - return -error; -} - -/* - * If the underlying (data/log/rt) device is readonly, there are some - * operations that cannot proceed. - */ -int -xfs_dev_is_read_only( - xfs_mount_t *mp, - char *message) -{ - if (xfs_readonly_buftarg(mp->m_ddev_targp) || - xfs_readonly_buftarg(mp->m_logdev_targp) || - (mp->m_rtdev_targp && xfs_readonly_buftarg(mp->m_rtdev_targp))) { - cmn_err(CE_NOTE, - "XFS: %s required on read-only device.", message); - cmn_err(CE_NOTE, - "XFS: write access unavailable, cannot proceed."); - return EROFS; - } - return 0; -} diff --git a/fs/xfs/linux-2.6/xfs_lrw.h b/fs/xfs/linux-2.6/xfs_lrw.h deleted file mode 100644 index 342ae8c..0000000 --- a/fs/xfs/linux-2.6/xfs_lrw.h +++ /dev/null @@ -1,29 +0,0 @@ -/* - * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. - * 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. - * - * 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. - * - * You should have received a copy of the GNU 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 - */ -#ifndef __XFS_LRW_H__ -#define __XFS_LRW_H__ - -struct xfs_mount; -struct xfs_inode; -struct xfs_buf; - -extern int xfs_dev_is_read_only(struct xfs_mount *, char *); - -extern int xfs_zero_eof(struct xfs_inode *, xfs_off_t, xfs_fsize_t); - -#endif /* __XFS_LRW_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c index a9f6d20..05cd853 100644 --- a/fs/xfs/linux-2.6/xfs_sync.c +++ b/fs/xfs/linux-2.6/xfs_sync.c @@ -607,7 +607,8 @@ xfssyncd( set_freezable(); timeleft = xfs_syncd_centisecs * msecs_to_jiffies(10); for (;;) { - timeleft = schedule_timeout_interruptible(timeleft); + if (list_empty(&mp->m_sync_list)) + timeleft = schedule_timeout_interruptible(timeleft); /* swsusp */ try_to_freeze(); if (kthread_should_stop() && list_empty(&mp->m_sync_list)) @@ -627,8 +628,7 @@ xfssyncd( list_add_tail(&mp->m_sync_work.w_list, &mp->m_sync_list); } - list_for_each_entry_safe(work, n, &mp->m_sync_list, w_list) - list_move(&work->w_list, &tmp); + list_splice_init(&mp->m_sync_list, &tmp); spin_unlock(&mp->m_sync_lock); list_for_each_entry_safe(work, n, &tmp, w_list) { @@ -688,12 +688,12 @@ xfs_inode_set_reclaim_tag( struct xfs_perag *pag; pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino)); - read_lock(&pag->pag_ici_lock); + write_lock(&pag->pag_ici_lock); spin_lock(&ip->i_flags_lock); __xfs_inode_set_reclaim_tag(pag, ip); __xfs_iflags_set(ip, XFS_IRECLAIMABLE); spin_unlock(&ip->i_flags_lock); - read_unlock(&pag->pag_ici_lock); + write_unlock(&pag->pag_ici_lock); xfs_perag_put(pag); } diff --git a/fs/xfs/linux-2.6/xfs_trace.c b/fs/xfs/linux-2.6/xfs_trace.c index 856eb3c..5a10760 100644 --- a/fs/xfs/linux-2.6/xfs_trace.c +++ b/fs/xfs/linux-2.6/xfs_trace.c @@ -52,22 +52,6 @@ #include "quota/xfs_dquot.h" /* - * Format fsblock number into a static buffer & return it. - */ -STATIC char *xfs_fmtfsblock(xfs_fsblock_t bno) -{ - static char rval[50]; - - if (bno == NULLFSBLOCK) - sprintf(rval, "NULLFSBLOCK"); - else if (isnullstartblock(bno)) - sprintf(rval, "NULLSTARTBLOCK(%lld)", startblockval(bno)); - else - sprintf(rval, "%lld", (xfs_dfsbno_t)bno); - return rval; -} - -/* * We include this last to have the helpers above available for the trace * event implementations. */ diff --git a/fs/xfs/linux-2.6/xfs_trace.h b/fs/xfs/linux-2.6/xfs_trace.h index a4574dc..fcaa62f 100644 --- a/fs/xfs/linux-2.6/xfs_trace.h +++ b/fs/xfs/linux-2.6/xfs_trace.h @@ -197,13 +197,13 @@ TRACE_EVENT(xfs_iext_insert, __entry->caller_ip = caller_ip; ), TP_printk("dev %d:%d ino 0x%llx state %s idx %ld " - "offset %lld block %s count %lld flag %d caller %pf", + "offset %lld block %lld count %lld flag %d caller %pf", MAJOR(__entry->dev), MINOR(__entry->dev), __entry->ino, __print_flags(__entry->bmap_state, "|", XFS_BMAP_EXT_FLAGS), (long)__entry->idx, __entry->startoff, - xfs_fmtfsblock(__entry->startblock), + (__int64_t)__entry->startblock, __entry->blockcount, __entry->state, (char *)__entry->caller_ip) @@ -241,13 +241,13 @@ DECLARE_EVENT_CLASS(xfs_bmap_class, __entry->caller_ip = caller_ip; ), TP_printk("dev %d:%d ino 0x%llx state %s idx %ld " - "offset %lld block %s count %lld flag %d caller %pf", + "offset %lld block %lld count %lld flag %d caller %pf", MAJOR(__entry->dev), MINOR(__entry->dev), __entry->ino, __print_flags(__entry->bmap_state, "|", XFS_BMAP_EXT_FLAGS), (long)__entry->idx, __entry->startoff, - xfs_fmtfsblock(__entry->startblock), + (__int64_t)__entry->startblock, __entry->blockcount, __entry->state, (char *)__entry->caller_ip) @@ -593,7 +593,7 @@ DECLARE_EVENT_CLASS(xfs_dquot_class, TP_ARGS(dqp), TP_STRUCT__entry( __field(dev_t, dev) - __field(__be32, id) + __field(u32, id) __field(unsigned, flags) __field(unsigned, nrefs) __field(unsigned long long, res_bcount) @@ -606,7 +606,7 @@ DECLARE_EVENT_CLASS(xfs_dquot_class, ), \ TP_fast_assign( __entry->dev = dqp->q_mount->m_super->s_dev; - __entry->id = dqp->q_core.d_id; + __entry->id = be32_to_cpu(dqp->q_core.d_id); __entry->flags = dqp->dq_flags; __entry->nrefs = dqp->q_nrefs; __entry->res_bcount = dqp->q_res_bcount; @@ -622,10 +622,10 @@ DECLARE_EVENT_CLASS(xfs_dquot_class, be64_to_cpu(dqp->q_core.d_ino_softlimit); ), TP_printk("dev %d:%d id 0x%x flags %s nrefs %u res_bc 0x%llx " - "bcnt 0x%llx [hard 0x%llx | soft 0x%llx] " - "icnt 0x%llx [hard 0x%llx | soft 0x%llx]", + "bcnt 0x%llx bhardlimit 0x%llx bsoftlimit 0x%llx " + "icnt 0x%llx ihardlimit 0x%llx isoftlimit 0x%llx]", MAJOR(__entry->dev), MINOR(__entry->dev), - be32_to_cpu(__entry->id), + __entry->id, __print_flags(__entry->flags, "|", XFS_DQ_FLAGS), __entry->nrefs, __entry->res_bcount, @@ -881,7 +881,7 @@ TRACE_EVENT(name, \ ), \ TP_printk("dev %d:%d ino 0x%llx size 0x%llx new_size 0x%llx " \ "offset 0x%llx count %zd flags %s " \ - "startoff 0x%llx startblock %s blockcount 0x%llx", \ + "startoff 0x%llx startblock %lld blockcount 0x%llx", \ MAJOR(__entry->dev), MINOR(__entry->dev), \ __entry->ino, \ __entry->size, \ @@ -890,7 +890,7 @@ TRACE_EVENT(name, \ __entry->count, \ __print_flags(__entry->flags, "|", BMAPI_FLAGS), \ __entry->startoff, \ - xfs_fmtfsblock(__entry->startblock), \ + (__int64_t)__entry->startblock, \ __entry->blockcount) \ ) DEFINE_IOMAP_EVENT(xfs_iomap_enter); diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index 1869fb9..5c11e4d 100644 --- a/fs/xfs/xfs_bmap.c +++ b/fs/xfs/xfs_bmap.c @@ -2550,22 +2550,134 @@ xfs_bmap_rtalloc( } STATIC int +xfs_bmap_btalloc_nullfb( + struct xfs_bmalloca *ap, + struct xfs_alloc_arg *args, + xfs_extlen_t *blen) +{ + struct xfs_mount *mp = ap->ip->i_mount; + struct xfs_perag *pag; + xfs_agnumber_t ag, startag; + int notinit = 0; + int error; + + if (ap->userdata && xfs_inode_is_filestream(ap->ip)) + args->type = XFS_ALLOCTYPE_NEAR_BNO; + else + args->type = XFS_ALLOCTYPE_START_BNO; + args->total = ap->total; + + /* + * Search for an allocation group with a single extent large enough + * for the request. If one isn't found, then adjust the minimum + * allocation size to the largest space found. + */ + startag = ag = XFS_FSB_TO_AGNO(mp, args->fsbno); + if (startag == NULLAGNUMBER) + startag = ag = 0; + + pag = xfs_perag_get(mp, ag); + while (*blen < ap->alen) { + if (!pag->pagf_init) { + error = xfs_alloc_pagf_init(mp, args->tp, ag, + XFS_ALLOC_FLAG_TRYLOCK); + if (error) { + xfs_perag_put(pag); + return error; + } + } + + /* + * See xfs_alloc_fix_freelist... + */ + if (pag->pagf_init) { + xfs_extlen_t longest; + longest = xfs_alloc_longest_free_extent(mp, pag); + if (*blen < longest) + *blen = longest; + } else + notinit = 1; + + if (xfs_inode_is_filestream(ap->ip)) { + if (*blen >= ap->alen) + break; + + if (ap->userdata) { + /* + * If startag is an invalid AG, we've + * come here once before and + * xfs_filestream_new_ag picked the + * best currently available. + * + * Don't continue looping, since we + * could loop forever. + */ + if (startag == NULLAGNUMBER) + break; + + error = xfs_filestream_new_ag(ap, &ag); + xfs_perag_put(pag); + if (error) + return error; + + /* loop again to set 'blen'*/ + startag = NULLAGNUMBER; + pag = xfs_perag_get(mp, ag); + continue; + } + } + if (++ag == mp->m_sb.sb_agcount) + ag = 0; + if (ag == startag) + break; + xfs_perag_put(pag); + pag = xfs_perag_get(mp, ag); + } + xfs_perag_put(pag); + + /* + * Since the above loop did a BUF_TRYLOCK, it is + * possible that there is space for this request. + */ + if (notinit || *blen < ap->minlen) + args->minlen = ap->minlen; + /* + * If the best seen length is less than the request + * length, use the best as the minimum. + */ + else if (*blen < ap->alen) + args->minlen = *blen; + /* + * Otherwise we've seen an extent as big as alen, + * use that as the minimum. + */ + else + args->minlen = ap->alen; + + /* + * set the failure fallback case to look in the selected + * AG as the stream may have moved. + */ + if (xfs_inode_is_filestream(ap->ip)) + ap->rval = args->fsbno = XFS_AGB_TO_FSB(mp, ag, 0); + + return 0; +} + +STATIC int xfs_bmap_btalloc( xfs_bmalloca_t *ap) /* bmap alloc argument struct */ { xfs_mount_t *mp; /* mount point structure */ xfs_alloctype_t atype = 0; /* type for allocation routines */ xfs_extlen_t align; /* minimum allocation alignment */ - xfs_agnumber_t ag; xfs_agnumber_t fb_agno; /* ag number of ap->firstblock */ - xfs_agnumber_t startag; + xfs_agnumber_t ag; xfs_alloc_arg_t args; xfs_extlen_t blen; xfs_extlen_t nextminlen = 0; - xfs_perag_t *pag; int nullfb; /* true if ap->firstblock isn't set */ int isaligned; - int notinit; int tryagain; int error; @@ -2612,103 +2724,9 @@ xfs_bmap_btalloc( args.firstblock = ap->firstblock; blen = 0; if (nullfb) { - if (ap->userdata && xfs_inode_is_filestream(ap->ip)) - args.type = XFS_ALLOCTYPE_NEAR_BNO; - else - args.type = XFS_ALLOCTYPE_START_BNO; - args.total = ap->total; - - /* - * Search for an allocation group with a single extent - * large enough for the request. - * - * If one isn't found, then adjust the minimum allocation - * size to the largest space found. - */ - startag = ag = XFS_FSB_TO_AGNO(mp, args.fsbno); - if (startag == NULLAGNUMBER) - startag = ag = 0; - notinit = 0; - pag = xfs_perag_get(mp, ag); - while (blen < ap->alen) { - if (!pag->pagf_init && - (error = xfs_alloc_pagf_init(mp, args.tp, - ag, XFS_ALLOC_FLAG_TRYLOCK))) { - xfs_perag_put(pag); - return error; - } - /* - * See xfs_alloc_fix_freelist... - */ - if (pag->pagf_init) { - xfs_extlen_t longest; - longest = xfs_alloc_longest_free_extent(mp, pag); - if (blen < longest) - blen = longest; - } else - notinit = 1; - - if (xfs_inode_is_filestream(ap->ip)) { - if (blen >= ap->alen) - break; - - if (ap->userdata) { - /* - * If startag is an invalid AG, we've - * come here once before and - * xfs_filestream_new_ag picked the - * best currently available. - * - * Don't continue looping, since we - * could loop forever. - */ - if (startag == NULLAGNUMBER) - break; - - error = xfs_filestream_new_ag(ap, &ag); - xfs_perag_put(pag); - if (error) - return error; - - /* loop again to set 'blen'*/ - startag = NULLAGNUMBER; - pag = xfs_perag_get(mp, ag); - continue; - } - } - if (++ag == mp->m_sb.sb_agcount) - ag = 0; - if (ag == startag) - break; - xfs_perag_put(pag); - pag = xfs_perag_get(mp, ag); - } - xfs_perag_put(pag); - /* - * Since the above loop did a BUF_TRYLOCK, it is - * possible that there is space for this request. - */ - if (notinit || blen < ap->minlen) - args.minlen = ap->minlen; - /* - * If the best seen length is less than the request - * length, use the best as the minimum. - */ - else if (blen < ap->alen) - args.minlen = blen; - /* - * Otherwise we've seen an extent as big as alen, - * use that as the minimum. - */ - else - args.minlen = ap->alen; - - /* - * set the failure fallback case to look in the selected - * AG as the stream may have moved. - */ - if (xfs_inode_is_filestream(ap->ip)) - ap->rval = args.fsbno = XFS_AGB_TO_FSB(mp, ag, 0); + error = xfs_bmap_btalloc_nullfb(ap, &args, &blen); + if (error) + return error; } else if (ap->low) { if (xfs_inode_is_filestream(ap->ip)) args.type = XFS_ALLOCTYPE_FIRST_AG; diff --git a/fs/xfs/xfs_fs.h b/fs/xfs/xfs_fs.h index f52ac27..7cf7220 100644 --- a/fs/xfs/xfs_fs.h +++ b/fs/xfs/xfs_fs.h @@ -292,7 +292,8 @@ typedef struct xfs_bstat { __s32 bs_extents; /* number of extents */ __u32 bs_gen; /* generation count */ __u16 bs_projid; /* project id */ - unsigned char bs_pad[14]; /* pad space, unused */ + __u16 bs_forkoff; /* inode fork offset in bytes */ + unsigned char bs_pad[12]; /* pad space, unused */ __u32 bs_dmevmask; /* DMIG event mask */ __u16 bs_dmstate; /* DMIG state info */ __u16 bs_aextents; /* attribute number of extents */ diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c index e281eb4..6845db9 100644 --- a/fs/xfs/xfs_iget.c +++ b/fs/xfs/xfs_iget.c @@ -190,13 +190,12 @@ xfs_iget_cache_hit( trace_xfs_iget_reclaim(ip); /* - * We need to set XFS_INEW atomically with clearing the - * reclaimable tag so that we do have an indicator of the - * inode still being initialized. + * We need to set XFS_IRECLAIM to prevent xfs_reclaim_inode + * from stomping over us while we recycle the inode. We can't + * clear the radix tree reclaimable tag yet as it requires + * pag_ici_lock to be held exclusive. */ - ip->i_flags |= XFS_INEW; - ip->i_flags &= ~XFS_IRECLAIMABLE; - __xfs_inode_clear_reclaim_tag(mp, pag, ip); + ip->i_flags |= XFS_IRECLAIM; spin_unlock(&ip->i_flags_lock); read_unlock(&pag->pag_ici_lock); @@ -216,7 +215,15 @@ xfs_iget_cache_hit( trace_xfs_iget_reclaim(ip); goto out_error; } + + write_lock(&pag->pag_ici_lock); + spin_lock(&ip->i_flags_lock); + ip->i_flags &= ~(XFS_IRECLAIMABLE | XFS_IRECLAIM); + ip->i_flags |= XFS_INEW; + __xfs_inode_clear_reclaim_tag(mp, pag, ip); inode->i_state = I_NEW; + spin_unlock(&ip->i_flags_lock); + write_unlock(&pag->pag_ici_lock); } else { /* If the VFS inode is being torn down, pause and try again. */ if (!igrab(inode)) { diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index fa31360..0ffd564 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -2439,75 +2439,31 @@ xfs_idestroy_fork( } /* - * Increment the pin count of the given buffer. - * This value is protected by ipinlock spinlock in the mount structure. + * This is called to unpin an inode. The caller must have the inode locked + * in at least shared mode so that the buffer cannot be subsequently pinned + * once someone is waiting for it to be unpinned. */ -void -xfs_ipin( - xfs_inode_t *ip) -{ - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - - atomic_inc(&ip->i_pincount); -} - -/* - * Decrement the pin count of the given inode, and wake up - * anyone in xfs_iwait_unpin() if the count goes to 0. The - * inode must have been previously pinned with a call to xfs_ipin(). - */ -void -xfs_iunpin( - xfs_inode_t *ip) -{ - ASSERT(atomic_read(&ip->i_pincount) > 0); - - if (atomic_dec_and_test(&ip->i_pincount)) - wake_up(&ip->i_ipin_wait); -} - -/* - * This is called to unpin an inode. It can be directed to wait or to return - * immediately without waiting for the inode to be unpinned. The caller must - * have the inode locked in at least shared mode so that the buffer cannot be - * subsequently pinned once someone is waiting for it to be unpinned. - */ -STATIC void -__xfs_iunpin_wait( - xfs_inode_t *ip, - int wait) +static void +xfs_iunpin_nowait( + struct xfs_inode *ip) { - xfs_inode_log_item_t *iip = ip->i_itemp; - ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); - if (atomic_read(&ip->i_pincount) == 0) - return; /* Give the log a push to start the unpinning I/O */ - if (iip && iip->ili_last_lsn) - xfs_log_force_lsn(ip->i_mount, iip->ili_last_lsn, 0); - else - xfs_log_force(ip->i_mount, 0); + xfs_log_force_lsn(ip->i_mount, ip->i_itemp->ili_last_lsn, 0); - if (wait) - wait_event(ip->i_ipin_wait, (atomic_read(&ip->i_pincount) == 0)); } void xfs_iunpin_wait( - xfs_inode_t *ip) + struct xfs_inode *ip) { - __xfs_iunpin_wait(ip, 1); -} - -static inline void -xfs_iunpin_nowait( - xfs_inode_t *ip) -{ - __xfs_iunpin_wait(ip, 0); + if (xfs_ipincount(ip)) { + xfs_iunpin_nowait(ip); + wait_event(ip->i_ipin_wait, (xfs_ipincount(ip) == 0)); + } } - /* * xfs_iextents_copy() * diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 6c912b0..9965e40 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -471,8 +471,6 @@ int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *, int xfs_iunlink(struct xfs_trans *, xfs_inode_t *); void xfs_iext_realloc(xfs_inode_t *, int, int); -void xfs_ipin(xfs_inode_t *); -void xfs_iunpin(xfs_inode_t *); void xfs_iunpin_wait(xfs_inode_t *); int xfs_iflush(xfs_inode_t *, uint); void xfs_ichgtime(xfs_inode_t *, int); @@ -480,6 +478,7 @@ void xfs_lock_inodes(xfs_inode_t **, int, uint); void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint); void xfs_synchronize_times(xfs_inode_t *); +void xfs_mark_inode_dirty(xfs_inode_t *); void xfs_mark_inode_dirty_sync(xfs_inode_t *); #define IHOLD(ip) \ diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c index d4dc063..7bfea85 100644 --- a/fs/xfs/xfs_inode_item.c +++ b/fs/xfs/xfs_inode_item.c @@ -535,23 +535,23 @@ xfs_inode_item_format( /* * This is called to pin the inode associated with the inode log - * item in memory so it cannot be written out. Do this by calling - * xfs_ipin() to bump the pin count in the inode while holding the - * inode pin lock. + * item in memory so it cannot be written out. */ STATIC void xfs_inode_item_pin( xfs_inode_log_item_t *iip) { ASSERT(xfs_isilocked(iip->ili_inode, XFS_ILOCK_EXCL)); - xfs_ipin(iip->ili_inode); + + atomic_inc(&iip->ili_inode->i_pincount); } /* * This is called to unpin the inode associated with the inode log * item which was previously pinned with a call to xfs_inode_item_pin(). - * Just call xfs_iunpin() on the inode to do this. + * + * Also wake up anyone in xfs_iunpin_wait() if the count goes to 0. */ /* ARGSUSED */ STATIC void @@ -559,7 +559,11 @@ xfs_inode_item_unpin( xfs_inode_log_item_t *iip, int stale) { - xfs_iunpin(iip->ili_inode); + struct xfs_inode *ip = iip->ili_inode; + + ASSERT(atomic_read(&ip->i_pincount) > 0); + if (atomic_dec_and_test(&ip->i_pincount)) + wake_up(&ip->i_ipin_wait); } /* ARGSUSED */ @@ -568,7 +572,7 @@ xfs_inode_item_unpin_remove( xfs_inode_log_item_t *iip, xfs_trans_t *tp) { - xfs_iunpin(iip->ili_inode); + xfs_inode_item_unpin(iip, 0); } /* diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index 3af0231..b1b801e 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -106,6 +106,7 @@ xfs_bulkstat_one_iget( buf->bs_dmevmask = dic->di_dmevmask; buf->bs_dmstate = dic->di_dmstate; buf->bs_aextents = dic->di_anextents; + buf->bs_forkoff = XFS_IFORK_BOFF(ip); switch (dic->di_format) { case XFS_DINODE_FMT_DEV: @@ -176,6 +177,7 @@ xfs_bulkstat_one_dinode( buf->bs_dmevmask = be32_to_cpu(dic->di_dmevmask); buf->bs_dmstate = be16_to_cpu(dic->di_dmstate); buf->bs_aextents = be16_to_cpu(dic->di_anextents); + buf->bs_forkoff = XFS_DFORK_BOFF(dic); switch (dic->di_format) { case XFS_DINODE_FMT_DEV: diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 4f16be4..e8fba92 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -60,7 +60,7 @@ STATIC int xlog_space_left(xlog_t *log, int cycle, int bytes); STATIC int xlog_sync(xlog_t *log, xlog_in_core_t *iclog); STATIC void xlog_dealloc_log(xlog_t *log); STATIC int xlog_write(xfs_mount_t *mp, xfs_log_iovec_t region[], - int nentries, xfs_log_ticket_t tic, + int nentries, struct xlog_ticket *tic, xfs_lsn_t *start_lsn, xlog_in_core_t **commit_iclog, uint flags); @@ -243,14 +243,14 @@ xlog_tic_add_region(xlog_ticket_t *tic, uint len, uint type) * out when the next write occurs. */ xfs_lsn_t -xfs_log_done(xfs_mount_t *mp, - xfs_log_ticket_t xtic, - void **iclog, - uint flags) +xfs_log_done( + struct xfs_mount *mp, + struct xlog_ticket *ticket, + struct xlog_in_core **iclog, + uint flags) { - xlog_t *log = mp->m_log; - xlog_ticket_t *ticket = (xfs_log_ticket_t) xtic; - xfs_lsn_t lsn = 0; + struct log *log = mp->m_log; + xfs_lsn_t lsn = 0; if (XLOG_FORCED_SHUTDOWN(log) || /* @@ -258,8 +258,7 @@ xfs_log_done(xfs_mount_t *mp, * If we get an error, just continue and give back the log ticket. */ (((ticket->t_flags & XLOG_TIC_INITED) == 0) && - (xlog_commit_record(mp, ticket, - (xlog_in_core_t **)iclog, &lsn)))) { + (xlog_commit_record(mp, ticket, iclog, &lsn)))) { lsn = (xfs_lsn_t) -1; if (ticket->t_flags & XLOG_TIC_PERM_RESERV) { flags |= XFS_LOG_REL_PERM_RESERV; @@ -289,7 +288,7 @@ xfs_log_done(xfs_mount_t *mp, } return lsn; -} /* xfs_log_done */ +} /* * Attaches a new iclog I/O completion callback routine during @@ -298,11 +297,11 @@ xfs_log_done(xfs_mount_t *mp, * executing the callback at an appropriate time. */ int -xfs_log_notify(xfs_mount_t *mp, /* mount of partition */ - void *iclog_hndl, /* iclog to hang callback off */ - xfs_log_callback_t *cb) +xfs_log_notify( + struct xfs_mount *mp, + struct xlog_in_core *iclog, + xfs_log_callback_t *cb) { - xlog_in_core_t *iclog = (xlog_in_core_t *)iclog_hndl; int abortflg; spin_lock(&iclog->ic_callback_lock); @@ -316,16 +315,14 @@ xfs_log_notify(xfs_mount_t *mp, /* mount of partition */ } spin_unlock(&iclog->ic_callback_lock); return abortflg; -} /* xfs_log_notify */ +} int -xfs_log_release_iclog(xfs_mount_t *mp, - void *iclog_hndl) +xfs_log_release_iclog( + struct xfs_mount *mp, + struct xlog_in_core *iclog) { - xlog_t *log = mp->m_log; - xlog_in_core_t *iclog = (xlog_in_core_t *)iclog_hndl; - - if (xlog_state_release_iclog(log, iclog)) { + if (xlog_state_release_iclog(mp->m_log, iclog)) { xfs_force_shutdown(mp, SHUTDOWN_LOG_IO_ERROR); return EIO; } @@ -344,17 +341,18 @@ xfs_log_release_iclog(xfs_mount_t *mp, * reservation, we prevent over allocation problems. */ int -xfs_log_reserve(xfs_mount_t *mp, - int unit_bytes, - int cnt, - xfs_log_ticket_t *ticket, - __uint8_t client, - uint flags, - uint t_type) +xfs_log_reserve( + struct xfs_mount *mp, + int unit_bytes, + int cnt, + struct xlog_ticket **ticket, + __uint8_t client, + uint flags, + uint t_type) { - xlog_t *log = mp->m_log; - xlog_ticket_t *internal_ticket; - int retval = 0; + struct log *log = mp->m_log; + struct xlog_ticket *internal_ticket; + int retval = 0; ASSERT(client == XFS_TRANSACTION || client == XFS_LOG); ASSERT((flags & XFS_LOG_NOSLEEP) == 0); @@ -367,7 +365,7 @@ xfs_log_reserve(xfs_mount_t *mp, if (*ticket != NULL) { ASSERT(flags & XFS_LOG_PERM_RESERV); - internal_ticket = (xlog_ticket_t *)*ticket; + internal_ticket = *ticket; trace_xfs_log_reserve(log, internal_ticket); @@ -519,7 +517,7 @@ xfs_log_unmount_write(xfs_mount_t *mp) xlog_in_core_t *first_iclog; #endif xfs_log_iovec_t reg[1]; - xfs_log_ticket_t tic = NULL; + xlog_ticket_t *tic = NULL; xfs_lsn_t lsn; int error; @@ -656,24 +654,24 @@ xfs_log_unmount(xfs_mount_t *mp) * transaction occur with one call to xfs_log_write(). */ int -xfs_log_write(xfs_mount_t * mp, - xfs_log_iovec_t reg[], - int nentries, - xfs_log_ticket_t tic, - xfs_lsn_t *start_lsn) +xfs_log_write( + struct xfs_mount *mp, + struct xfs_log_iovec reg[], + int nentries, + struct xlog_ticket *tic, + xfs_lsn_t *start_lsn) { - int error; - xlog_t *log = mp->m_log; + struct log *log = mp->m_log; + int error; if (XLOG_FORCED_SHUTDOWN(log)) return XFS_ERROR(EIO); - if ((error = xlog_write(mp, reg, nentries, tic, start_lsn, NULL, 0))) { + error = xlog_write(mp, reg, nentries, tic, start_lsn, NULL, 0); + if (error) xfs_force_shutdown(mp, SHUTDOWN_LOG_IO_ERROR); - } return error; -} /* xfs_log_write */ - +} void xfs_log_move_tail(xfs_mount_t *mp, @@ -1642,16 +1640,16 @@ xlog_print_tic_res(xfs_mount_t *mp, xlog_ticket_t *ticket) * bytes have been written out. */ STATIC int -xlog_write(xfs_mount_t * mp, - xfs_log_iovec_t reg[], - int nentries, - xfs_log_ticket_t tic, - xfs_lsn_t *start_lsn, - xlog_in_core_t **commit_iclog, - uint flags) +xlog_write( + struct xfs_mount *mp, + struct xfs_log_iovec reg[], + int nentries, + struct xlog_ticket *ticket, + xfs_lsn_t *start_lsn, + struct xlog_in_core **commit_iclog, + uint flags) { xlog_t *log = mp->m_log; - xlog_ticket_t *ticket = (xlog_ticket_t *)tic; xlog_in_core_t *iclog = NULL; /* ptr to current in-core log */ xlog_op_header_t *logop_head; /* ptr to log operation header */ __psint_t ptr; /* copy address into data region */ @@ -1765,7 +1763,7 @@ xlog_write(xfs_mount_t * mp, default: xfs_fs_cmn_err(CE_WARN, mp, "Bad XFS transaction clientid 0x%x in ticket 0x%p", - logop_head->oh_clientid, tic); + logop_head->oh_clientid, ticket); return XFS_ERROR(EIO); } diff --git a/fs/xfs/xfs_log.h b/fs/xfs/xfs_log.h index 7074be9..97a24c7 100644 --- a/fs/xfs/xfs_log.h +++ b/fs/xfs/xfs_log.h @@ -110,8 +110,6 @@ typedef struct xfs_log_iovec { uint i_type; /* type of region */ } xfs_log_iovec_t; -typedef void* xfs_log_ticket_t; - /* * Structure used to pass callback function and the function's argument * to the log manager. @@ -126,10 +124,12 @@ typedef struct xfs_log_callback { #ifdef __KERNEL__ /* Log manager interfaces */ struct xfs_mount; +struct xlog_in_core; struct xlog_ticket; + xfs_lsn_t xfs_log_done(struct xfs_mount *mp, - xfs_log_ticket_t ticket, - void **iclog, + struct xlog_ticket *ticket, + struct xlog_in_core **iclog, uint flags); int _xfs_log_force(struct xfs_mount *mp, uint flags, @@ -151,21 +151,21 @@ int xfs_log_mount_finish(struct xfs_mount *mp); void xfs_log_move_tail(struct xfs_mount *mp, xfs_lsn_t tail_lsn); int xfs_log_notify(struct xfs_mount *mp, - void *iclog, + struct xlog_in_core *iclog, xfs_log_callback_t *callback_entry); int xfs_log_release_iclog(struct xfs_mount *mp, - void *iclog_hndl); + struct xlog_in_core *iclog); int xfs_log_reserve(struct xfs_mount *mp, int length, int count, - xfs_log_ticket_t *ticket, + struct xlog_ticket **ticket, __uint8_t clientid, uint flags, uint t_type); int xfs_log_write(struct xfs_mount *mp, xfs_log_iovec_t region[], int nentries, - xfs_log_ticket_t ticket, + struct xlog_ticket *ticket, xfs_lsn_t *start_lsn); int xfs_log_unmount_write(struct xfs_mount *mp); void xfs_log_unmount(struct xfs_mount *mp); diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 6afaaeb..e79b56b 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -1097,13 +1097,15 @@ xfs_default_resblks(xfs_mount_t *mp) __uint64_t resblks; /* - * We default to 5% or 1024 fsbs of space reserved, whichever is smaller. - * This may drive us straight to ENOSPC on mount, but that implies - * we were already there on the last unmount. Warn if this occurs. + * We default to 5% or 8192 fsbs of space reserved, whichever is + * smaller. This is intended to cover concurrent allocation + * transactions when we initially hit enospc. These each require a 4 + * block reservation. Hence by default we cover roughly 2000 concurrent + * allocation reservations. */ resblks = mp->m_sb.sb_dblocks; do_div(resblks, 20); - resblks = min_t(__uint64_t, resblks, 1024); + resblks = min_t(__uint64_t, resblks, 8192); return resblks; } @@ -1417,6 +1419,9 @@ xfs_mountfs( * when at ENOSPC. This is needed for operations like create with * attr, unwritten extent conversion at ENOSPC, etc. Data allocations * are not allowed to use this reserved space. + * + * This may drive us straight to ENOSPC on mount, but that implies + * we were already there on the last unmount. Warn if this occurs. */ if (!(mp->m_flags & XFS_MOUNT_RDONLY)) { resblks = xfs_default_resblks(mp); @@ -1725,26 +1730,30 @@ xfs_mod_incore_sb_unlocked( lcounter += rem; } } else { /* Taking blocks away */ - lcounter += delta; + if (lcounter >= 0) { + mp->m_sb.sb_fdblocks = lcounter + + XFS_ALLOC_SET_ASIDE(mp); + return 0; + } - /* - * If were out of blocks, use any available reserved blocks if - * were allowed to. - */ + /* + * We are out of blocks, use any available reserved + * blocks if were allowed to. + */ + if (!rsvd) + return XFS_ERROR(ENOSPC); - if (lcounter < 0) { - if (rsvd) { - lcounter = (long long)mp->m_resblks_avail + delta; - if (lcounter < 0) { - return XFS_ERROR(ENOSPC); - } - mp->m_resblks_avail = lcounter; - return 0; - } else { /* not reserved */ - return XFS_ERROR(ENOSPC); - } + lcounter = (long long)mp->m_resblks_avail + delta; + if (lcounter >= 0) { + mp->m_resblks_avail = lcounter; + return 0; } + printk_once(KERN_WARNING + "Filesystem \"%s\": reserve blocks depleted! " + "Consider increasing reserve pool size.", + mp->m_fsname); + return XFS_ERROR(ENOSPC); } mp->m_sb.sb_fdblocks = lcounter + XFS_ALLOC_SET_ASIDE(mp); @@ -2052,6 +2061,26 @@ xfs_mount_log_sb( return error; } +/* + * If the underlying (data/log/rt) device is readonly, there are some + * operations that cannot proceed. + */ +int +xfs_dev_is_read_only( + struct xfs_mount *mp, + char *message) +{ + if (xfs_readonly_buftarg(mp->m_ddev_targp) || + xfs_readonly_buftarg(mp->m_logdev_targp) || + (mp->m_rtdev_targp && xfs_readonly_buftarg(mp->m_rtdev_targp))) { + cmn_err(CE_NOTE, + "XFS: %s required on read-only device.", message); + cmn_err(CE_NOTE, + "XFS: write access unavailable, cannot proceed."); + return EROFS; + } + return 0; +} #ifdef HAVE_PERCPU_SB /* diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 14dafd6..4fa0bc7 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -436,6 +436,8 @@ extern void xfs_freesb(xfs_mount_t *); extern int xfs_fs_writable(xfs_mount_t *); extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t); +extern int xfs_dev_is_read_only(struct xfs_mount *, char *); + extern int xfs_dmops_get(struct xfs_mount *); extern void xfs_dmops_put(struct xfs_mount *); diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index be942d4..f73e358 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -796,7 +796,7 @@ _xfs_trans_commit( int sync; #define XFS_TRANS_LOGVEC_COUNT 16 xfs_log_iovec_t log_vector_fast[XFS_TRANS_LOGVEC_COUNT]; - void *commit_iclog; + struct xlog_in_core *commit_iclog; int shutdown; commit_lsn = -1; diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h index c93e3a1..79c8bab 100644 --- a/fs/xfs/xfs_trans.h +++ b/fs/xfs/xfs_trans.h @@ -910,7 +910,7 @@ typedef struct xfs_trans { unsigned int t_blk_res_used; /* # of resvd blocks used */ unsigned int t_rtx_res; /* # of rt extents resvd */ unsigned int t_rtx_res_used; /* # of resvd rt extents used */ - xfs_log_ticket_t t_ticket; /* log mgr ticket */ + struct xlog_ticket *t_ticket; /* log mgr ticket */ xfs_lsn_t t_lsn; /* log seq num of start of * transaction. */ xfs_lsn_t t_commit_lsn; /* log seq num of end of diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c index 5ffd544..fb586360 100644 --- a/fs/xfs/xfs_trans_buf.c +++ b/fs/xfs/xfs_trans_buf.c @@ -46,6 +46,65 @@ STATIC xfs_buf_t *xfs_trans_buf_item_match(xfs_trans_t *, xfs_buftarg_t *, STATIC xfs_buf_t *xfs_trans_buf_item_match_all(xfs_trans_t *, xfs_buftarg_t *, xfs_daddr_t, int); +/* + * Add the locked buffer to the transaction. + * + * The buffer must be locked, and it cannot be associated with any + * transaction. + * + * If the buffer does not yet have a buf log item associated with it, + * then allocate one for it. Then add the buf item to the transaction. + */ +STATIC void +_xfs_trans_bjoin( + struct xfs_trans *tp, + struct xfs_buf *bp, + int reset_recur) +{ + struct xfs_buf_log_item *bip; + + ASSERT(XFS_BUF_ISBUSY(bp)); + ASSERT(XFS_BUF_FSPRIVATE2(bp, void *) == NULL); + + /* + * The xfs_buf_log_item pointer is stored in b_fsprivate. If + * it doesn't have one yet, then allocate one and initialize it. + * The checks to see if one is there are in xfs_buf_item_init(). + */ + xfs_buf_item_init(bp, tp->t_mountp); + bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t *); + ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); + ASSERT(!(bip->bli_format.blf_flags & XFS_BLI_CANCEL)); + ASSERT(!(bip->bli_flags & XFS_BLI_LOGGED)); + if (reset_recur) + bip->bli_recur = 0; + + /* + * Take a reference for this transaction on the buf item. + */ + atomic_inc(&bip->bli_refcount); + + /* + * Get a log_item_desc to point at the new item. + */ + (void) xfs_trans_add_item(tp, (xfs_log_item_t *)bip); + + /* + * Initialize b_fsprivate2 so we can find it with incore_match() + * in xfs_trans_get_buf() and friends above. + */ + XFS_BUF_SET_FSPRIVATE2(bp, tp); + +} + +void +xfs_trans_bjoin( + struct xfs_trans *tp, + struct xfs_buf *bp) +{ + _xfs_trans_bjoin(tp, bp, 0); + trace_xfs_trans_bjoin(bp->b_fspriv); +} /* * Get and lock the buffer for the caller if it is not already @@ -132,40 +191,8 @@ xfs_trans_get_buf(xfs_trans_t *tp, ASSERT(!XFS_BUF_GETERROR(bp)); - /* - * The xfs_buf_log_item pointer is stored in b_fsprivate. If - * it doesn't have one yet, then allocate one and initialize it. - * The checks to see if one is there are in xfs_buf_item_init(). - */ - xfs_buf_item_init(bp, tp->t_mountp); - - /* - * Set the recursion count for the buffer within this transaction - * to 0. - */ - bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t*); - ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); - ASSERT(!(bip->bli_format.blf_flags & XFS_BLI_CANCEL)); - ASSERT(!(bip->bli_flags & XFS_BLI_LOGGED)); - bip->bli_recur = 0; - - /* - * Take a reference for this transaction on the buf item. - */ - atomic_inc(&bip->bli_refcount); - - /* - * Get a log_item_desc to point at the new item. - */ - (void) xfs_trans_add_item(tp, (xfs_log_item_t*)bip); - - /* - * Initialize b_fsprivate2 so we can find it with incore_match() - * above. - */ - XFS_BUF_SET_FSPRIVATE2(bp, tp); - - trace_xfs_trans_get_buf(bip); + _xfs_trans_bjoin(tp, bp, 1); + trace_xfs_trans_get_buf(bp->b_fspriv); return (bp); } @@ -210,44 +237,11 @@ xfs_trans_getsb(xfs_trans_t *tp, } bp = xfs_getsb(mp, flags); - if (bp == NULL) { + if (bp == NULL) return NULL; - } - - /* - * The xfs_buf_log_item pointer is stored in b_fsprivate. If - * it doesn't have one yet, then allocate one and initialize it. - * The checks to see if one is there are in xfs_buf_item_init(). - */ - xfs_buf_item_init(bp, mp); - - /* - * Set the recursion count for the buffer within this transaction - * to 0. - */ - bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t*); - ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); - ASSERT(!(bip->bli_format.blf_flags & XFS_BLI_CANCEL)); - ASSERT(!(bip->bli_flags & XFS_BLI_LOGGED)); - bip->bli_recur = 0; - - /* - * Take a reference for this transaction on the buf item. - */ - atomic_inc(&bip->bli_refcount); - - /* - * Get a log_item_desc to point at the new item. - */ - (void) xfs_trans_add_item(tp, (xfs_log_item_t*)bip); - - /* - * Initialize b_fsprivate2 so we can find it with incore_match() - * above. - */ - XFS_BUF_SET_FSPRIVATE2(bp, tp); - trace_xfs_trans_getsb(bip); + _xfs_trans_bjoin(tp, bp, 1); + trace_xfs_trans_getsb(bp->b_fspriv); return (bp); } @@ -425,40 +419,9 @@ xfs_trans_read_buf( if (XFS_FORCED_SHUTDOWN(mp)) goto shutdown_abort; - /* - * The xfs_buf_log_item pointer is stored in b_fsprivate. If - * it doesn't have one yet, then allocate one and initialize it. - * The checks to see if one is there are in xfs_buf_item_init(). - */ - xfs_buf_item_init(bp, tp->t_mountp); + _xfs_trans_bjoin(tp, bp, 1); + trace_xfs_trans_read_buf(bp->b_fspriv); - /* - * Set the recursion count for the buffer within this transaction - * to 0. - */ - bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t*); - ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); - ASSERT(!(bip->bli_format.blf_flags & XFS_BLI_CANCEL)); - ASSERT(!(bip->bli_flags & XFS_BLI_LOGGED)); - bip->bli_recur = 0; - - /* - * Take a reference for this transaction on the buf item. - */ - atomic_inc(&bip->bli_refcount); - - /* - * Get a log_item_desc to point at the new item. - */ - (void) xfs_trans_add_item(tp, (xfs_log_item_t*)bip); - - /* - * Initialize b_fsprivate2 so we can find it with incore_match() - * above. - */ - XFS_BUF_SET_FSPRIVATE2(bp, tp); - - trace_xfs_trans_read_buf(bip); *bpp = bp; return 0; @@ -623,53 +586,6 @@ xfs_trans_brelse(xfs_trans_t *tp, } /* - * Add the locked buffer to the transaction. - * The buffer must be locked, and it cannot be associated with any - * transaction. - * - * If the buffer does not yet have a buf log item associated with it, - * then allocate one for it. Then add the buf item to the transaction. - */ -void -xfs_trans_bjoin(xfs_trans_t *tp, - xfs_buf_t *bp) -{ - xfs_buf_log_item_t *bip; - - ASSERT(XFS_BUF_ISBUSY(bp)); - ASSERT(XFS_BUF_FSPRIVATE2(bp, void *) == NULL); - - /* - * The xfs_buf_log_item pointer is stored in b_fsprivate. If - * it doesn't have one yet, then allocate one and initialize it. - * The checks to see if one is there are in xfs_buf_item_init(). - */ - xfs_buf_item_init(bp, tp->t_mountp); - bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t *); - ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); - ASSERT(!(bip->bli_format.blf_flags & XFS_BLI_CANCEL)); - ASSERT(!(bip->bli_flags & XFS_BLI_LOGGED)); - - /* - * Take a reference for this transaction on the buf item. - */ - atomic_inc(&bip->bli_refcount); - - /* - * Get a log_item_desc to point at the new item. - */ - (void) xfs_trans_add_item(tp, (xfs_log_item_t *)bip); - - /* - * Initialize b_fsprivate2 so we can find it with incore_match() - * in xfs_trans_get_buf() and friends above. - */ - XFS_BUF_SET_FSPRIVATE2(bp, tp); - - trace_xfs_trans_bjoin(bip); -} - -/* * Mark the buffer as not needing to be unlocked when the buf item's * IOP_UNLOCK() routine is called. The buffer must already be locked * and associated with the given transaction. diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index ddd2c5d..9d376be 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -584,113 +584,6 @@ xfs_readlink( } /* - * xfs_fsync - * - * This is called to sync the inode and its data out to disk. We need to hold - * the I/O lock while flushing the data, and the inode lock while flushing the - * inode. The inode lock CANNOT be held while flushing the data, so acquire - * after we're done with that. - */ -int -xfs_fsync( - xfs_inode_t *ip) -{ - xfs_trans_t *tp; - int error = 0; - int log_flushed = 0; - - xfs_itrace_entry(ip); - - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) - return XFS_ERROR(EIO); - - /* - * We always need to make sure that the required inode state is safe on - * disk. The inode might be clean but we still might need to force the - * log because of committed transactions that haven't hit the disk yet. - * Likewise, there could be unflushed non-transactional changes to the - * inode core that have to go to disk and this requires us to issue - * a synchronous transaction to capture these changes correctly. - * - * This code relies on the assumption that if the update_* fields - * of the inode are clear and the inode is unpinned then it is clean - * and no action is required. - */ - xfs_ilock(ip, XFS_ILOCK_SHARED); - - if (!ip->i_update_core) { - /* - * Timestamps/size haven't changed since last inode flush or - * inode transaction commit. That means either nothing got - * written or a transaction committed which caught the updates. - * If the latter happened and the transaction hasn't hit the - * disk yet, the inode will be still be pinned. If it is, - * force the log. - */ - xfs_iunlock(ip, XFS_ILOCK_SHARED); - if (xfs_ipincount(ip)) { - if (ip->i_itemp->ili_last_lsn) { - error = _xfs_log_force_lsn(ip->i_mount, - ip->i_itemp->ili_last_lsn, - XFS_LOG_SYNC, &log_flushed); - } else { - error = _xfs_log_force(ip->i_mount, - XFS_LOG_SYNC, &log_flushed); - } - } - } else { - /* - * Kick off a transaction to log the inode core to get the - * updates. The sync transaction will also force the log. - */ - xfs_iunlock(ip, XFS_ILOCK_SHARED); - tp = xfs_trans_alloc(ip->i_mount, XFS_TRANS_FSYNC_TS); - error = xfs_trans_reserve(tp, 0, - XFS_FSYNC_TS_LOG_RES(ip->i_mount), 0, 0, 0); - if (error) { - xfs_trans_cancel(tp, 0); - return error; - } - xfs_ilock(ip, XFS_ILOCK_EXCL); - - /* - * Note - it's possible that we might have pushed ourselves out - * of the way during trans_reserve which would flush the inode. - * But there's no guarantee that the inode buffer has actually - * gone out yet (it's delwri). Plus the buffer could be pinned - * anyway if it's part of an inode in another recent - * transaction. So we play it safe and fire off the - * transaction anyway. - */ - 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); - error = _xfs_trans_commit(tp, 0, &log_flushed); - - xfs_iunlock(ip, XFS_ILOCK_EXCL); - } - - if (ip->i_mount->m_flags & XFS_MOUNT_BARRIER) { - /* - * If the log write didn't issue an ordered tag we need - * to flush the disk cache for the data device now. - */ - if (!log_flushed) - xfs_blkdev_issue_flush(ip->i_mount->m_ddev_targp); - - /* - * If this inode is on the RT dev we need to flush that - * cache as well. - */ - if (XFS_IS_REALTIME_INODE(ip)) - xfs_blkdev_issue_flush(ip->i_mount->m_rtdev_targp); - } - - return error; -} - -/* * Flags for xfs_free_eofblocks */ #define XFS_FREE_EOF_TRYLOCK (1<<0) diff --git a/fs/xfs/xfs_vnodeops.h b/fs/xfs/xfs_vnodeops.h index 774f407..d8dfa8d 100644 --- a/fs/xfs/xfs_vnodeops.h +++ b/fs/xfs/xfs_vnodeops.h @@ -21,7 +21,6 @@ int xfs_setattr(struct xfs_inode *ip, struct iattr *vap, int flags); #define XFS_ATTR_NOACL 0x08 /* Don't call xfs_acl_chmod */ int xfs_readlink(struct xfs_inode *ip, char *link); -int xfs_fsync(struct xfs_inode *ip); int xfs_release(struct xfs_inode *ip); int xfs_inactive(struct xfs_inode *ip); int xfs_lookup(struct xfs_inode *dp, struct xfs_name *name, @@ -50,18 +49,6 @@ int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name, int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags); int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize, int flags, struct attrlist_cursor_kern *cursor); -ssize_t xfs_read(struct xfs_inode *ip, struct kiocb *iocb, - const struct iovec *iovp, unsigned int segs, - loff_t *offset, int ioflags); -ssize_t xfs_splice_read(struct xfs_inode *ip, struct file *infilp, - loff_t *ppos, struct pipe_inode_info *pipe, size_t count, - int flags, int ioflags); -ssize_t xfs_splice_write(struct xfs_inode *ip, - struct pipe_inode_info *pipe, struct file *outfilp, - loff_t *ppos, size_t count, int flags, int ioflags); -ssize_t xfs_write(struct xfs_inode *xip, struct kiocb *iocb, - const struct iovec *iovp, unsigned int nsegs, - loff_t *offset, int ioflags); int xfs_bmap(struct xfs_inode *ip, xfs_off_t offset, ssize_t count, int flags, struct xfs_iomap *iomapp, int *niomaps); void xfs_tosspages(struct xfs_inode *inode, xfs_off_t first, @@ -72,4 +59,6 @@ int xfs_flush_pages(struct xfs_inode *ip, xfs_off_t first, xfs_off_t last, uint64_t flags, int fiopt); int xfs_wait_on_pages(struct xfs_inode *ip, xfs_off_t first, xfs_off_t last); +int xfs_zero_eof(struct xfs_inode *, xfs_off_t, xfs_fsize_t); + #endif /* _XFS_VNODEOPS_H */ |
