1 files changed, 4 insertions, 0 deletions

diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index 4cf3d269e271..3a9a1361fdc1 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -217,6 +217,8 @@ static void bfs_put_super(struct super_block *s)
         if (!info)
                 return;
 
+        lock_kernel();
+
         if (s->s_dirt)
                 bfs_write_super(s);
 
@@ -225,6 +227,8 @@ static void bfs_put_super(struct super_block *s)
         kfree(info->si_imap);
         kfree(info);
         s->s_fs_info = NULL;
+
+        unlock_kernel();
 }
 
 static int bfs_statfs(struct dentry *dentry, struct kstatfs *buf)