diff mbox

[09/15] btrfs: optimize check for stale device

Message ID 1f778216eb80083cc7c105b0fe7aa17e4ba22821.1455556900.git.dsterba@suse.com (mailing list archive)
State Accepted
Headers show

Commit Message

David Sterba Feb. 15, 2016, 5:34 p.m. UTC 
From: Anand Jain <anand.jain@oracle.com>

Optimize check for stale device to only be checked when there is device
added or changed. If there is no update to the device, there is no need
to call btrfs_free_stale_device().

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---
 fs/btrfs/volumes.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 5e49adb34b2e..20af20b0eaee 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -699,7 +699,8 @@  static noinline int device_list_add(const char *path,
 	 * if there is new btrfs on an already registered device,
 	 * then remove the stale device entry.
 	 */
-	btrfs_free_stale_device(device);
+	if (ret > 0)
+		btrfs_free_stale_device(device);
 
 	*fs_devices_ret = fs_devices;