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authorStefan Behrens <sbehrens@giantdisaster.de>2013-09-11 09:59:22 +0200
committerChris Mason <chris.mason@fusionio.com>2013-09-21 11:05:28 -0400
commita724b4369097897db45d61108c0e976912e586c7 (patch)
tree3821e5db97ad5fb4b11364e3f7f3d595b20c5ebd
parentf4ab9ea706f2c6e4aad544145353b81afe7500e1 (diff)
Btrfs: add the missing mutex unlock in write_all_supers()
The BUG() was replaced by btrfs_error() and return -EIO with the patch "get rid of one BUG() in write_all_supers()", but the missing mutex_unlock() was overlooked. The 0-DAY kernel build service from Intel reported the missing unlock which was found by the coccinelle tool: fs/btrfs/disk-io.c:3422:2-8: preceding lock on line 3374 Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
-rw-r--r--fs/btrfs/disk-io.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 72cf08b2be85..4ae17ed13b32 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3416,6 +3416,7 @@ static int write_all_supers(struct btrfs_root *root, int max_mirrors)
if (total_errors > max_errors) {
printk(KERN_ERR "btrfs: %d errors while writing supers\n",
total_errors);
+ mutex_unlock(&root->fs_info->fs_devices->device_list_mutex);
/* FUA is masked off if unsupported and can't be the reason */
btrfs_error(root->fs_info, -EIO,

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