diff options
Diffstat (limited to 'drivers/md/bitmap.c')
| -rw-r--r-- | drivers/md/bitmap.c | 27 |
1 files changed, 12 insertions, 15 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c index 62fac2b3800..275a2aa79b7 100644 --- a/drivers/md/bitmap.c +++ b/drivers/md/bitmap.c @@ -747,7 +747,7 @@ int bitmap_unplug(struct bitmap *bitmap) } static void bitmap_set_memory_bits(struct bitmap *bitmap, sector_t offset, - unsigned long sectors, int set); + unsigned long sectors, int in_sync); /* * bitmap_init_from_disk -- called at bitmap_create time to initialize * the in-memory bitmap from the on-disk bitmap -- also, sets up the * memory mapping of the bitmap file @@ -756,7 +756,7 @@ static void bitmap_set_memory_bits(struct bitmap *bitmap, sector_t offset, * previously kicked from the array, we mark all the bits as * 1's in order to cause a full resync. */ -static int bitmap_init_from_disk(struct bitmap *bitmap) +static int bitmap_init_from_disk(struct bitmap *bitmap, int in_sync) { unsigned long i, chunks, index, oldindex, bit; struct page *page = NULL, *oldpage = NULL; @@ -782,7 +782,7 @@ static int bitmap_init_from_disk(struct bitmap *bitmap) bytes = (chunks + 7) / 8; - num_pages = (bytes + sizeof(bitmap_super_t) + PAGE_SIZE - 1) / PAGE_SIZE + 1; + num_pages = (bytes + sizeof(bitmap_super_t) + PAGE_SIZE - 1) / PAGE_SIZE; if (i_size_read(file->f_mapping->host) < bytes + sizeof(bitmap_super_t)) { printk(KERN_INFO "%s: bitmap file too short %lu < %lu\n", @@ -854,14 +854,9 @@ static int bitmap_init_from_disk(struct bitmap *bitmap) if (test_bit(bit, page_address(page))) { /* if the disk bit is set, set the memory bit */ bitmap_set_memory_bits(bitmap, - i << CHUNK_BLOCK_SHIFT(bitmap), 1, 1); + i << CHUNK_BLOCK_SHIFT(bitmap), 1, in_sync); bit_cnt++; } -#if 0 - else - bitmap_set_memory_bits(bitmap, - i << CHUNK_BLOCK_SHIFT(bitmap), 1, 0); -#endif } /* everything went OK */ @@ -1331,10 +1326,10 @@ void bitmap_close_sync(struct bitmap *bitmap) } static void bitmap_set_memory_bits(struct bitmap *bitmap, sector_t offset, - unsigned long sectors, int set) + unsigned long sectors, int in_sync) { /* For each chunk covered by any of these sectors, set the - * resync needed bit, and the counter to 1. They should all + * counter to 1 and set resync_needed unless in_sync. They should all * be 0 at this point */ while (sectors) { @@ -1346,10 +1341,12 @@ static void bitmap_set_memory_bits(struct bitmap *bitmap, sector_t offset, spin_unlock_irq(&bitmap->lock); return; } - if (set && !NEEDED(*bmc)) { - BUG_ON(*bmc); - *bmc = NEEDED_MASK | 1; + if (! *bmc) { + struct page *page; + *bmc = 1 | (in_sync? 0 : NEEDED_MASK); bitmap_count_page(bitmap, offset, 1); + page = filemap_get_page(bitmap, offset >> CHUNK_BLOCK_SHIFT(bitmap)); + set_page_attr(bitmap, page, BITMAP_PAGE_CLEAN); } spin_unlock_irq(&bitmap->lock); if (sectors > secs) @@ -1489,7 +1486,7 @@ int bitmap_create(mddev_t *mddev) /* now that we have some pages available, initialize the in-memory * bitmap from the on-disk bitmap */ - err = bitmap_init_from_disk(bitmap); + err = bitmap_init_from_disk(bitmap, mddev->recovery_cp == MaxSector); if (err) return err; |