[Ocfs2-devel] [PATCH 1/1] OCFS2: unhash all dentries on a inode.

[wangang wang]

In ocfs2_process_delete_request(), we should unhash all dentries on the inode.
--not only the ones with 0 referrence count. so that it's possible for dput()
to drop the stale inode.

the patch is against 1.2 svn.

Signed-off-by: Wengang wang <wen.gang.wang at oracle.com>
--

Index: fs/ocfs2/vote.c
===================================================================
--- fs/ocfs2/vote.c	(revision 3101)
+++ fs/ocfs2/vote.c	(working copy)
@@ -176,6 +176,7 @@
 					int deleting_node)
 {
 	int response = OCFS2_RESPONSE_BUSY;
+	struct list_head *tmp, *head;
 
 	mlog(0, "DELETE vote on inode %lu, read lnk_cnt = %u, slot = %d\n",
 	     inode->i_ino, inode->i_nlink, *orphaned_slot);
@@ -253,9 +254,19 @@
 	ocfs2_mark_inode_remotely_deleted(inode, deleting_node);
 	spin_unlock(&OCFS2_I(inode)->ip_lock);
 
-	/* Not sure this is necessary anymore. */
-	d_prune_aliases(inode);
+	/* unhash all dentries on this inode */
+	spin_lock(&dcache_lock);
+	head = &inode->i_dentry;
+	tmp = head;
 
+	while ((tmp = tmp->next) != head) {
+		struct dentry *dentry = list_entry(tmp, struct dentry, d_alias);
+		spin_lock(&dentry->d_lock);
+		__d_drop(dentry);
+		spin_unlock(&dentry->d_lock);
+	}
+	spin_unlock(&dcache_lock);
+
 	/* If we get here, then we're voting 'yes', so commit the
 	 * delete on our side. */
 	response = OCFS2_RESPONSE_OK;