diff options
Diffstat (limited to 'fs/btrfs/raid56.c')
| -rw-r--r-- | fs/btrfs/raid56.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c index b4511f560e92..02105d68accb 100644 --- a/fs/btrfs/raid56.c +++ b/fs/btrfs/raid56.c @@ -2297,8 +2297,7 @@ void raid56_parity_recover(struct bio *bio, struct btrfs_io_context *bioc, static void fill_data_csums(struct btrfs_raid_bio *rbio) { struct btrfs_fs_info *fs_info = rbio->bioc->fs_info; - struct btrfs_root *csum_root = btrfs_csum_root(fs_info, - rbio->bioc->full_stripe_logical); + struct btrfs_root *csum_root; const u64 start = rbio->bioc->full_stripe_logical; const u32 len = (rbio->nr_data * rbio->stripe_nsectors) << fs_info->sectorsize_bits; @@ -2331,6 +2330,15 @@ static void fill_data_csums(struct btrfs_raid_bio *rbio) goto error; } + csum_root = btrfs_csum_root(fs_info, rbio->bioc->full_stripe_logical); + if (unlikely(!csum_root)) { + btrfs_err(fs_info, + "missing csum root for extent at bytenr %llu", + rbio->bioc->full_stripe_logical); + ret = -EUCLEAN; + goto error; + } + ret = btrfs_lookup_csums_bitmap(csum_root, NULL, start, start + len - 1, rbio->csum_buf, rbio->csum_bitmap); if (ret < 0) |