From: Josef Bacik <josef@toxicpanda.com>
Date: Fri, 28 Sep 2018 07:17:48 -0400
Subject: btrfs: release metadata before running delayed refs
Git-commit: f45c752b65af46bf42963295c332865d95f97fff
Patch-mainline: v4.20-rc1
References: bsc##1165949

We want to release the unused reservation we have since it refills the
delayed refs reserve, which will make everything go smoother when
running the delayed refs if we're short on our reservation.

CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Liu Bo <bo.liu@linux.alibaba.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Acked-by: Nikolay Borisov <nborisov@suse.com>
---
 fs/btrfs/transaction.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1962,6 +1962,9 @@ int btrfs_commit_transaction(struct btrf
 		return ret;
 	}
 
+	btrfs_trans_release_metadata(trans, fs_info);
+	trans->block_rsv = NULL;
+
 	/* make a pass through all the delayed refs we have so far
 	 * any runnings procs may add more while we are here
 	 */
@@ -1971,9 +1974,6 @@ int btrfs_commit_transaction(struct btrf
 		return ret;
 	}
 
-	btrfs_trans_release_metadata(trans, fs_info);
-	trans->block_rsv = NULL;
-
 	cur_trans = trans->transaction;
 
 	/*