diff options
| author | Christoph Hellwig <hch@lst.de> | 2022-08-06 11:03:23 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2022-09-26 13:27:58 +0300 |
| commit | 2bbc72f14f19031bdb26ba7854f4fc888c492e64 (patch) | |
| tree | 6fbbe6a606e2e0d2da0ba6bd573f1769d525bef4 /fs | |
| parent | 6b42f5e3439d64a725e022ef1711dd00981e68a9 (diff) | |
| download | linux-2bbc72f14f19031bdb26ba7854f4fc888c492e64.tar.xz | |
btrfs: don't take a bio_counter reference for cloned bios
Stop grabbing an extra bio_counter reference for each clone bio in a
mirrored write and instead just release the one original reference in
btrfs_end_bioc once all the bios for a single btrfs_bio have completed
instead of at the end of btrfs_submit_bio once all bios have been
submitted.
This means the reference is now carried by the "upper" btrfs_bio only
instead of each lower bio.
Also remove the now unused btrfs_bio_counter_inc_noblocked helper.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/ctree.h | 1 | ||||
| -rw-r--r-- | fs/btrfs/dev-replace.c | 5 | ||||
| -rw-r--r-- | fs/btrfs/volumes.c | 6 |
3 files changed, 2 insertions, 10 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index b678d322ec2c..5d03fc267b58 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -4076,7 +4076,6 @@ static inline void btrfs_init_full_stripe_locks_tree( /* dev-replace.c */ void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); -void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount); static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info) diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c index 88b2c256dc83..61e58066b5fd 100644 --- a/fs/btrfs/dev-replace.c +++ b/fs/btrfs/dev-replace.c @@ -1283,11 +1283,6 @@ int __pure btrfs_dev_replace_is_ongoing(struct btrfs_dev_replace *dev_replace) return 1; } -void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info) -{ - percpu_counter_inc(&fs_info->dev_replace.bio_counter); -} - void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount) { percpu_counter_sub(&fs_info->dev_replace.bio_counter, amount); diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index db333d108858..1d01347c844f 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -6676,6 +6676,8 @@ static void btrfs_end_bioc(struct btrfs_io_context *bioc, bool async) struct bio *orig_bio = bioc->orig_bio; struct btrfs_bio *bbio = btrfs_bio(orig_bio); + btrfs_bio_counter_dec(bioc->fs_info); + bbio->mirror_num = bioc->mirror_num; orig_bio->bi_private = bioc->private; orig_bio->bi_end_io = bioc->end_io; @@ -6723,7 +6725,6 @@ static void btrfs_end_bio(struct bio *bio) if (bio != bioc->orig_bio) bio_put(bio); - btrfs_bio_counter_dec(bioc->fs_info); if (atomic_dec_and_test(&bioc->stripes_pending)) btrfs_end_bioc(bioc, true); } @@ -6778,8 +6779,6 @@ static void submit_stripe_bio(struct btrfs_io_context *bioc, (unsigned long)dev->bdev->bd_dev, rcu_str_deref(dev->name), dev->devid, bio->bi_iter.bi_size); - btrfs_bio_counter_inc_noblocked(fs_info); - btrfsic_check_bio(bio); submit_bio(bio); } @@ -6831,7 +6830,6 @@ void btrfs_submit_bio(struct btrfs_fs_info *fs_info, struct bio *bio, int mirror submit_stripe_bio(bioc, bio, dev_nr, should_clone); } - btrfs_bio_counter_dec(fs_info); } static bool dev_args_match_fs_devices(const struct btrfs_dev_lookup_args *args, |