diff options
| author | Christoph Hellwig <hch@lst.de> | 2023-05-31 09:54:02 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2023-06-19 13:59:36 +0200 |
| commit | ec63b84d4611b2f07e9242080f3e8de4a011820b (patch) | |
| tree | ba976b7b5152286a0cd47381692580a3e214e931 /fs/btrfs/inode.c | |
| parent | btrfs: open code btrfs_bio_end_io in btrfs_dio_submit_io (diff) | |
| download | linux-ec63b84d4611b2f07e9242080f3e8de4a011820b.tar.xz linux-ec63b84d4611b2f07e9242080f3e8de4a011820b.zip | |
btrfs: add an ordered_extent pointer to struct btrfs_bio
Add a pointer to the ordered_extent to the existing union in struct
btrfs_bio, so all code dealing with data write bios can just use a
pointer dereference to retrieve the ordered_extent instead of doing
multiple rbtree lookups per I/O.
The reference to this ordered_extent is dropped at end I/O time,
which implies that an extra one must be acquired when the bio is split.
This also requires moving the btrfs_extract_ordered_extent call into
btrfs_split_bio so that the invariant of always having a valid
ordered_extent reference for the btrfs_bio is kept.
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 020d871bb135..b8ec3d95e659 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -2716,8 +2716,11 @@ static int btrfs_extract_ordered_extent(struct btrfs_bio *bbio, return -EINVAL; /* No need to split if the ordered extent covers the entire bio. */ - if (ordered->disk_num_bytes == len) + if (ordered->disk_num_bytes == len) { + refcount_inc(&ordered->refs); + bbio->ordered = ordered; return 0; + } /* * Don't split the extent_map for NOCOW extents, as we're writing into @@ -2734,8 +2737,7 @@ static int btrfs_extract_ordered_extent(struct btrfs_bio *bbio, new = btrfs_split_ordered_extent(ordered, len); if (IS_ERR(new)) return PTR_ERR(new); - btrfs_put_ordered_extent(new); - + bbio->ordered = new; return 0; } |