1 files changed, 10 insertions, 2 deletions

diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index 79742d824a0a..60e44e6dd7a6 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -932,8 +932,16 @@ static struct buffer_head * ext3_dx_find_entry(struct dentry *dentry,
         struct inode *dir = dentry->d_parent->d_inode;
 
         sb = dir->i_sb;
-        if (!(frame = dx_probe(dentry, NULL, &hinfo, frames, err)))
-                return NULL;
+        /* NFS may look up ".." - look at dx_root directory block */
+        if (namelen > 2 || name[0] != '.'||(name[1] != '.' && name[1] != '\0')){
+                if (!(frame = dx_probe(dentry, NULL, &hinfo, frames, err)))
+                        return NULL;
+        } else {
+                frame = frames;
+                frame->bh = NULL;                       /* for dx_release() */
+                frame->at = (struct dx_entry *)frames;  /* hack for zero entry*/
+                dx_set_block(frame->at, 0);             /* dx_root block is 0 */
+        }
         hash = hinfo.hash;
         do {
                 block = dx_get_block(frame->at);