X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=fs%2Fbtrfs%2Fioctl.c;h=f4173294f60ece43286b966d15fa4e738e8d124f;hb=2675d2ce9a0e891ed8f3d51e96380edb35755ad9;hp=ed9c715d2579625e86982e14944d2afc764e0ba4;hpb=c4351826bef5347cc80cc7206b8a42fbbbb26601;p=platform%2Fkernel%2Flinux-rpi.git

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index ed9c715..f417329 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -4267,7 +4267,9 @@ static long btrfs_ioctl_qgroup_assign(struct file *file, void __user *arg)
 	}
 
 	/* update qgroup status and info */
+	mutex_lock(&fs_info->qgroup_ioctl_lock);
 	err = btrfs_run_qgroups(trans);
+	mutex_unlock(&fs_info->qgroup_ioctl_lock);
 	if (err < 0)
 		btrfs_handle_fs_error(fs_info, err,
 				      "failed to update qgroup status and info");