diff options
| -rw-r--r-- | fs/btrfs/scrub.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index a1bf87958f8e..5ff6ee70ed2b 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -1811,12 +1811,22 @@ static int scrub_checksum_tree_block(struct scrub_block *sblock) SHASH_DESC_ON_STACK(shash, fs_info->csum_shash); u8 calculated_csum[BTRFS_CSUM_SIZE]; u8 on_disk_csum[BTRFS_CSUM_SIZE]; - const int num_pages = sctx->fs_info->nodesize >> PAGE_SHIFT; + /* + * This is done in sectorsize steps even for metadata as there's a + * constraint for nodesize to be aligned to sectorsize. This will need + * to change so we don't misuse data and metadata units like that. + */ + const u32 sectorsize = sctx->fs_info->sectorsize; + const int num_sectors = fs_info->nodesize >> fs_info->sectorsize_bits; int i; struct scrub_page *spage; char *kaddr; BUG_ON(sblock->page_count < 1); + + /* Each member in pagev is just one block, not a full page */ + ASSERT(sblock->page_count == num_sectors); + spage = sblock->pagev[0]; kaddr = page_address(spage->page); h = (struct btrfs_header *)kaddr; @@ -1845,11 +1855,11 @@ static int scrub_checksum_tree_block(struct scrub_block *sblock) shash->tfm = fs_info->csum_shash; crypto_shash_init(shash); crypto_shash_update(shash, kaddr + BTRFS_CSUM_SIZE, - PAGE_SIZE - BTRFS_CSUM_SIZE); + sectorsize - BTRFS_CSUM_SIZE); - for (i = 1; i < num_pages; i++) { + for (i = 1; i < num_sectors; i++) { kaddr = page_address(sblock->pagev[i]->page); - crypto_shash_update(shash, kaddr, PAGE_SIZE); + crypto_shash_update(shash, kaddr, sectorsize); } crypto_shash_final(shash, calculated_csum); |