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| 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/compression.c | |
| parent | 112397acc358883a90bb32b9597724dfbc3ccb41 (diff) | |
| download | lwn-ec63b84d4611b2f07e9242080f3e8de4a011820b.tar.gz lwn-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/compression.c')
| -rw-r--r-- | fs/btrfs/compression.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index aafc846bcd4f..ce4be0f21c5c 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -303,10 +303,10 @@ void btrfs_submit_compressed_write(struct btrfs_ordered_extent *ordered, INIT_WORK(&cb->write_end_work, btrfs_finish_compressed_write_work); cb->nr_pages = nr_pages; cb->bbio.bio.bi_iter.bi_sector = ordered->disk_bytenr >> SECTOR_SHIFT; + cb->bbio.ordered = ordered; btrfs_add_compressed_bio_pages(cb); btrfs_submit_bio(&cb->bbio, 0); - btrfs_put_ordered_extent(ordered); } /* |