From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Mon, 30 Jul 2012 08:15:15 +0000 (-0600)
Subject: Btrfs: unlock on error in btrfs_delalloc_reserve_metadata()
X-Git-Tag: v3.6-rc4~6^2~21
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=55e591ffde38e0088b022129e035e18a8d04c7e6;p=~emulex%2Finfiniband.git

Btrfs: unlock on error in btrfs_delalloc_reserve_metadata()

We should release this mutex before returning the error code.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 4e1b153b7c4..45c69c4184c 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4571,8 +4571,10 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
 	if (root->fs_info->quota_enabled) {
 		ret = btrfs_qgroup_reserve(root, num_bytes +
 					   nr_extents * root->leafsize);
-		if (ret)
+		if (ret) {
+			mutex_unlock(&BTRFS_I(inode)->delalloc_mutex);
 			return ret;
+		}
 	}
 
 	ret = reserve_metadata_bytes(root, block_rsv, to_reserve, flush);