[PATCH 11/15] btrfs: drop uuid_mutex in btrfs_open_devices()

[Anand Jain]

btrfs_open_devices() is using uuid_mutex, but as the btrfs_open_devices()
is just limited to open all the devices under a given fsid, so we don't
need uuid_mutex.

Instead it should hold the device_list_mutex as it updated the status
of the btrfs_fs_devices and btrfs_device of a fsid.

Signed-off-by: Anand Jain <anand.j...@oracle.com>
---
 fs/btrfs/volumes.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 85948ef12ecf..dfebf8f29916 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1115,7 +1115,7 @@ int btrfs_open_devices(struct btrfs_fs_devices 
*fs_devices,
 {
        int ret;
 
-       mutex_lock(&uuid_mutex);
+       mutex_lock(&fs_devices->device_list_mutex);
        if (fs_devices->opened) {
                fs_devices->opened++;
                ret = 0;
@@ -1123,7 +1123,7 @@ int btrfs_open_devices(struct btrfs_fs_devices 
*fs_devices,
                list_sort(NULL, &fs_devices->devices, devid_cmp);
                ret = open_fs_devices(fs_devices, flags, holder);
        }
-       mutex_unlock(&uuid_mutex);
+       mutex_unlock(&fs_devices->device_list_mutex);
        return ret;
 }
 
-- 
2.7.0

--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html