diff options
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/scrub.c | 34 |
1 files changed, 9 insertions, 25 deletions
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index d05025034b0a..c4e030661fac 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -4096,32 +4096,16 @@ int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, if (btrfs_fs_closing(fs_info)) return -EAGAIN; - if (fs_info->nodesize > BTRFS_STRIPE_LEN) { - /* - * in this case scrub is unable to calculate the checksum - * the way scrub is implemented. Do not handle this - * situation at all because it won't ever happen. - */ - btrfs_err(fs_info, - "scrub: size assumption nodesize <= BTRFS_STRIPE_LEN (%d <= %d) fails", - fs_info->nodesize, - BTRFS_STRIPE_LEN); - return -EINVAL; - } + /* At mount time we have ensured nodesize is in the range of [4K, 64K]. */ + ASSERT(fs_info->nodesize <= BTRFS_STRIPE_LEN); - if (fs_info->nodesize > - SCRUB_MAX_SECTORS_PER_BLOCK << fs_info->sectorsize_bits || - fs_info->sectorsize > PAGE_SIZE * SCRUB_MAX_SECTORS_PER_BLOCK) { - /* - * Would exhaust the array bounds of sectorv member in - * struct scrub_block - */ - btrfs_err(fs_info, -"scrub: nodesize and sectorsize <= SCRUB_MAX_SECTORS_PER_BLOCK (%d <= %d && %d <= %d) fails", - fs_info->nodesize, SCRUB_MAX_SECTORS_PER_BLOCK, - fs_info->sectorsize, SCRUB_MAX_SECTORS_PER_BLOCK); - return -EINVAL; - } + /* + * SCRUB_MAX_SECTORS_PER_BLOCK is calculated using the largest possible + * value (max nodesize / min sectorsize), thus nodesize should always + * be fine. + */ + ASSERT(fs_info->nodesize <= + SCRUB_MAX_SECTORS_PER_BLOCK << fs_info->sectorsize_bits); /* Allocate outside of device_list_mutex */ sctx = scrub_setup_ctx(fs_info, is_dev_replace); |