hfsplus: protect readdir against removals from open_dir_list

We already have i_mutex for readdir and the namespace operations that add
entries to open_dir_list, the only thing that was missing was the removal
in hfsplus_dir_release.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
index 1c81eedcab01..93fa45cc4810 100644
--- a/fs/hfsplus/dir.c
+++ b/fs/hfsplus/dir.c
@@ -231,7 +231,9 @@ static int hfsplus_dir_release(struct inode *inode, struct file *file)
 {
         struct hfsplus_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;