diff options
Diffstat (limited to 'fs/btrfs/bio.h')
| -rw-r--r-- | fs/btrfs/bio.h | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/fs/btrfs/bio.h b/fs/btrfs/bio.h index a8eca3a65673..8a29980159b4 100644 --- a/fs/btrfs/bio.h +++ b/fs/btrfs/bio.h @@ -39,8 +39,8 @@ struct btrfs_bio { union { /* - * Data checksumming and original I/O information for internal - * use in the btrfs_submit_bio machinery. + * For data reads: checksumming and original I/O information. + * (for internal use in the btrfs_submit_bio machinery only) */ struct { u8 *csum; @@ -48,7 +48,18 @@ struct btrfs_bio { struct bvec_iter saved_iter; }; - /* For metadata parentness verification. */ + /* + * For data writes: + * - pointer to the checksums for this bio + * - original physical address from the allocator + * (for zone append only) + */ + struct { + struct btrfs_ordered_sum *sums; + u64 orig_physical; + }; + + /* For metadata reads: parentness verification. */ struct btrfs_tree_parent_check parent_check; }; |