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btrfs: Remove pair of bio_get/put in btrfs_schedule_bio

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This code was added in 492bb6deee ("Btrfs: Hold a reference on bios
during submit_bio, add some extra bio checks"). However, holding a
reference on a bio is necessary only if it's going to be referenced
after the submit_bio returns and the bio is completed. In this
particular instance this is not the case so there is no need to hold
an extra reference since we directly return.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Nikolay Borisov 2017-12-11 16:38:48 +02:00 committed by David Sterba
parent 9ea2c7c9da
commit 3e798068a8
1 changed files with 0 additions and 2 deletions
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2
fs/btrfs/volumes.c
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@ -6132,9 +6132,7 @@ static noinline void btrfs_schedule_bio(struct btrfs_device *device,
/* don't bother with additional async steps for reads, right now */
if (bio_op(bio) == REQ_OP_READ) {
bio_get(bio);
btrfsic_submit_bio(bio);
bio_put(bio);
return;
}