hfs: SMP race on directory close()

->open_dir_list needs protection...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c
index 17c22a8..e0101b6 100644 (file)
--- a/fs/hfs/dir.c
+++ b/fs/hfs/dir.c
@@ -176,7 +176,9 @@ static int hfs_dir_release(struct inode *inode, struct file *file)
 {
        struct hfs_readdir_data *rd = file->private_data;
        if (rd) {
+               mutex_lock(&inode->i_mutex);
                list_del(&rd->list);
+               mutex_unlock(&inode->i_mutex);
                kfree(rd);
        }
        return 0;