Btrfs: introduce a mutex lock for btrfs quota operations

[cascardo/linux.git] / fs / btrfs / disk-io.c

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 70e6b0c..9f83e5b 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2213,6 +2213,7 @@ int open_ctree(struct super_block *sb,
        mutex_init(&fs_info->dev_replace.lock);
 
        spin_lock_init(&fs_info->qgroup_lock);
+       mutex_init(&fs_info->qgroup_ioctl_lock);
        fs_info->qgroup_tree = RB_ROOT;
        INIT_LIST_HEAD(&fs_info->dirty_qgroups);
        fs_info->qgroup_seq = 1;