diff options
| -rw-r--r-- | drivers/md/bitmap.c | 133 | ||||
| -rw-r--r-- | drivers/md/bitmap.h | 5 | ||||
| -rw-r--r-- | drivers/md/md.h | 5 |
3 files changed, 43 insertions, 100 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c index 39ff0ef..0dc6546 100644 --- a/drivers/md/bitmap.c +++ b/drivers/md/bitmap.c @@ -29,7 +29,6 @@ #include "md.h" #include "bitmap.h" -#include <linux/dm-dirty-log.h> /* debug macros */ #define DEBUG 0 @@ -775,10 +774,8 @@ static inline unsigned long file_page_offset(struct bitmap *bitmap, unsigned lon * 0 or page 1 */ static inline struct page *filemap_get_page(struct bitmap *bitmap, - unsigned long chunk) + unsigned long chunk) { - if (bitmap->filemap == NULL) - return NULL; if (file_page_index(bitmap, chunk) >= bitmap->file_pages) return NULL; return bitmap->filemap[file_page_index(bitmap, chunk) @@ -878,28 +875,19 @@ enum bitmap_page_attr { static inline void set_page_attr(struct bitmap *bitmap, struct page *page, enum bitmap_page_attr attr) { - if (page) - __set_bit((page->index<<2) + attr, bitmap->filemap_attr); - else - __set_bit(attr, &bitmap->logattrs); + __set_bit((page->index<<2) + attr, bitmap->filemap_attr); } static inline void clear_page_attr(struct bitmap *bitmap, struct page *page, enum bitmap_page_attr attr) { - if (page) - __clear_bit((page->index<<2) + attr, bitmap->filemap_attr); - else - __clear_bit(attr, &bitmap->logattrs); + __clear_bit((page->index<<2) + attr, bitmap->filemap_attr); } static inline unsigned long test_page_attr(struct bitmap *bitmap, struct page *page, enum bitmap_page_attr attr) { - if (page) - return test_bit((page->index<<2) + attr, bitmap->filemap_attr); - else - return test_bit(attr, &bitmap->logattrs); + return test_bit((page->index<<2) + attr, bitmap->filemap_attr); } /* @@ -912,30 +900,26 @@ static inline unsigned long test_page_attr(struct bitmap *bitmap, struct page *p static void bitmap_file_set_bit(struct bitmap *bitmap, sector_t block) { unsigned long bit; - struct page *page = NULL; + struct page *page; void *kaddr; unsigned long chunk = block >> CHUNK_BLOCK_SHIFT(bitmap); - if (!bitmap->filemap) { - struct dm_dirty_log *log = bitmap->mddev->bitmap_info.log; - if (log) - log->type->mark_region(log, chunk); - } else { + if (!bitmap->filemap) + return; - page = filemap_get_page(bitmap, chunk); - if (!page) - return; - bit = file_page_offset(bitmap, chunk); + page = filemap_get_page(bitmap, chunk); + if (!page) + return; + bit = file_page_offset(bitmap, chunk); - /* set the bit */ - kaddr = kmap_atomic(page, KM_USER0); - if (bitmap->flags & BITMAP_HOSTENDIAN) - set_bit(bit, kaddr); - else - __set_bit_le(bit, kaddr); - kunmap_atomic(kaddr, KM_USER0); - PRINTK("set file bit %lu page %lu\n", bit, page->index); - } + /* set the bit */ + kaddr = kmap_atomic(page, KM_USER0); + if (bitmap->flags & BITMAP_HOSTENDIAN) + set_bit(bit, kaddr); + else + __set_bit_le(bit, kaddr); + kunmap_atomic(kaddr, KM_USER0); + PRINTK("set file bit %lu page %lu\n", bit, page->index); /* record page number so it gets flushed to disk when unplug occurs */ set_page_attr(bitmap, page, BITMAP_PAGE_DIRTY); } @@ -952,16 +936,6 @@ void bitmap_unplug(struct bitmap *bitmap) if (!bitmap) return; - if (!bitmap->filemap) { - /* Must be using a dirty_log */ - struct dm_dirty_log *log = bitmap->mddev->bitmap_info.log; - dirty = test_and_clear_bit(BITMAP_PAGE_DIRTY, &bitmap->logattrs); - need_write = test_and_clear_bit(BITMAP_PAGE_NEEDWRITE, &bitmap->logattrs); - if (dirty || need_write) - if (log->type->flush(log)) - bitmap->flags |= BITMAP_WRITE_ERROR; - goto out; - } /* look at each page to see if there are any set bits that need to be * flushed out to disk */ @@ -990,7 +964,6 @@ void bitmap_unplug(struct bitmap *bitmap) else md_super_wait(bitmap->mddev); } -out: if (bitmap->flags & BITMAP_WRITE_ERROR) bitmap_file_kick(bitmap); } @@ -1199,7 +1172,6 @@ void bitmap_daemon_work(mddev_t *mddev) struct page *page = NULL, *lastpage = NULL; sector_t blocks; void *paddr; - struct dm_dirty_log *log = mddev->bitmap_info.log; /* Use a mutex to guard daemon_work against * bitmap_destroy. @@ -1224,12 +1196,11 @@ void bitmap_daemon_work(mddev_t *mddev) spin_lock_irqsave(&bitmap->lock, flags); for (j = 0; j < bitmap->chunks; j++) { bitmap_counter_t *bmc; - if (!bitmap->filemap) { - if (!log) - /* error or shutdown */ - break; - } else - page = filemap_get_page(bitmap, j); + if (!bitmap->filemap) + /* error or shutdown */ + break; + + page = filemap_get_page(bitmap, j); if (page != lastpage) { /* skip this page unless it's marked as needing cleaning */ @@ -1298,19 +1269,16 @@ void bitmap_daemon_work(mddev_t *mddev) -1); /* clear the bit */ - if (page) { - paddr = kmap_atomic(page, KM_USER0); - if (bitmap->flags & BITMAP_HOSTENDIAN) - clear_bit(file_page_offset(bitmap, j), - paddr); - else - __clear_bit_le( + paddr = kmap_atomic(page, KM_USER0); + if (bitmap->flags & BITMAP_HOSTENDIAN) + clear_bit(file_page_offset(bitmap, j), + paddr); + else + __clear_bit_le( file_page_offset(bitmap, j), paddr); - kunmap_atomic(paddr, KM_USER0); - } else - log->type->clear_region(log, j); + kunmap_atomic(paddr, KM_USER0); } } else j |= PAGE_COUNTER_MASK; @@ -1318,16 +1286,12 @@ void bitmap_daemon_work(mddev_t *mddev) spin_unlock_irqrestore(&bitmap->lock, flags); /* now sync the final page */ - if (lastpage != NULL || log != NULL) { + if (lastpage != NULL) { spin_lock_irqsave(&bitmap->lock, flags); if (test_page_attr(bitmap, lastpage, BITMAP_PAGE_NEEDWRITE)) { clear_page_attr(bitmap, lastpage, BITMAP_PAGE_NEEDWRITE); spin_unlock_irqrestore(&bitmap->lock, flags); - if (lastpage) - write_page(bitmap, lastpage, 0); - else - if (log->type->flush(log)) - bitmap->flags |= BITMAP_WRITE_ERROR; + write_page(bitmap, lastpage, 0); } else { set_page_attr(bitmap, lastpage, BITMAP_PAGE_NEEDWRITE); spin_unlock_irqrestore(&bitmap->lock, flags); @@ -1769,12 +1733,10 @@ int bitmap_create(mddev_t *mddev) BUILD_BUG_ON(sizeof(bitmap_super_t) != 256); if (!file - && !mddev->bitmap_info.offset - && !mddev->bitmap_info.log) /* bitmap disabled, nothing to do */ + && !mddev->bitmap_info.offset) /* bitmap disabled, nothing to do */ return 0; BUG_ON(file && mddev->bitmap_info.offset); - BUG_ON(mddev->bitmap_info.offset && mddev->bitmap_info.log); bitmap = kzalloc(sizeof(*bitmap), GFP_KERNEL); if (!bitmap) @@ -1865,6 +1827,7 @@ int bitmap_create(mddev_t *mddev) int bitmap_load(mddev_t *mddev) { int err = 0; + sector_t start = 0; sector_t sector = 0; struct bitmap *bitmap = mddev->bitmap; @@ -1883,24 +1846,14 @@ int bitmap_load(mddev_t *mddev) } bitmap_close_sync(bitmap); - if (mddev->bitmap_info.log) { - unsigned long i; - struct dm_dirty_log *log = mddev->bitmap_info.log; - for (i = 0; i < bitmap->chunks; i++) - if (!log->type->in_sync(log, i, 1)) - bitmap_set_memory_bits(bitmap, - (sector_t)i << CHUNK_BLOCK_SHIFT(bitmap), - 1); - } else { - sector_t start = 0; - if (mddev->degraded == 0 - || bitmap->events_cleared == mddev->events) - /* no need to keep dirty bits to optimise a - * re-add of a missing device */ - start = mddev->recovery_cp; - - err = bitmap_init_from_disk(bitmap, start); - } + if (mddev->degraded == 0 + || bitmap->events_cleared == mddev->events) + /* no need to keep dirty bits to optimise a + * re-add of a missing device */ + start = mddev->recovery_cp; + + err = bitmap_init_from_disk(bitmap, start); + if (err) goto out; diff --git a/drivers/md/bitmap.h b/drivers/md/bitmap.h index b2a127e..a28f2e5 100644 --- a/drivers/md/bitmap.h +++ b/drivers/md/bitmap.h @@ -212,10 +212,6 @@ struct bitmap { unsigned long file_pages; /* number of pages in the file */ int last_page_size; /* bytes in the last page */ - unsigned long logattrs; /* used when filemap_attr doesn't exist - * because we are working with a dirty_log - */ - unsigned long flags; int allclean; @@ -237,7 +233,6 @@ struct bitmap { wait_queue_head_t behind_wait; struct sysfs_dirent *sysfs_can_clear; - }; /* the bitmap API */ diff --git a/drivers/md/md.h b/drivers/md/md.h index de5455d..7d906a9 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -307,11 +307,6 @@ struct mddev_s * hot-adding a bitmap. It should * eventually be settable by sysfs. */ - /* When md is serving under dm, it might use a - * dirty_log to store the bits. - */ - struct dm_dirty_log *log; - struct mutex mutex; unsigned long chunksize; unsigned long daemon_sleep; /* how many jiffies between updates? */ |
