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Btrfs: move finish_wait out of the loop 

If we're still going to wait after schedule(), we don't have to do
finish_wait() to remove our %wait_queue_entry since prepare_to_wait()
won't add the same %wait_queue_entry twice.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Liu Bo 2017-09-01 16:14:28 -06:00 committed by David Sterba
parent 219d33b26a
commit 69cc7151ee
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/ioctl.c
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@ -622,8 +622,8 @@ static void btrfs_wait_for_no_snapshotting_writes(struct btrfs_root *root)
if (writers)
schedule();
finish_wait(&root->subv_writers->wait, &wait);
} while (writers);
finish_wait(&root->subv_writers->wait, &wait);
}
static int create_snapshot(struct btrfs_root *root, struct inode *dir,