cifs: fix dentry hash calculation for case-insensitive mounts

case-insensitive mounts shouldn't use full_name_hash(). Make sure we
use the parent dentry's d_hash routine when one is set.

Reported-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index f5618f8..c343b14 100644 (file)
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -77,6 +77,11 @@ cifs_readdir_lookup(struct dentry *parent, struct qstr *name,
 
        cFYI(1, ("For %s", name->name));
 
+       if (parent->d_op && parent->d_op->d_hash)
+               parent->d_op->d_hash(parent, name);
+       else
+               name->hash = full_name_hash(name->name, name->len);
+
        dentry = d_lookup(parent, name);
        if (dentry) {
                /* FIXME: check for inode number changes? */
@@ -671,8 +676,6 @@ static int cifs_get_name_from_search_buf(struct qstr *pqst,
                pqst->name = filename;
                pqst->len = len;
        }
-       pqst->hash = full_name_hash(pqst->name, pqst->len);
-/*     cFYI(1, ("filldir on %s",pqst->name));  */
        return rc;
 }