Commit fa1bcbe0 authored by David Sterba's avatar David Sterba

btrfs: document mandatory order of bio in btrfs_io_bio

Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 1a63143d
...@@ -281,6 +281,10 @@ struct btrfs_io_bio { ...@@ -281,6 +281,10 @@ struct btrfs_io_bio {
u8 *csum_allocated; u8 *csum_allocated;
btrfs_io_bio_end_io_t *end_io; btrfs_io_bio_end_io_t *end_io;
struct bvec_iter iter; struct bvec_iter iter;
/*
* This member must come last, bio_alloc_bioset will allocate enough
* bytes for entire btrfs_io_bio but relies on bio being last.
*/
struct bio bio; struct bio bio;
}; };
......
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