d_hash_and_lookup(): export, switch open-coded instances

* calling conventions change - ERR_PTR() is returned on ->d_hash() errors;
NULL is just for dcache miss now.
* exported, open-coded instances in ncpfs and cifs converted.

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

1 files changed, 3 insertions, 7 deletions

diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index 4117e7b377bb..816326093656 100644
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -593,14 +593,10 @@ ncp_fill_cache(struct file *filp, void *dirent, filldir_t filldir,
                 return 1; /* I'm not sure */
 
         qname.name = __name;
-        qname.hash = full_name_hash(qname.name, qname.len);
-
-        if (dentry->d_op && dentry->d_op->d_hash)
-                if (dentry->d_op->d_hash(dentry, dentry->d_inode, &qname) != 0)
-                        goto end_advance;
-
-        newdent = d_lookup(dentry, &qname);
 
+        newdent = d_hash_and_lookup(dentry, &qname);
+        if (unlikely(IS_ERR(newdent)))
+                goto end_advance;
         if (!newdent) {
                 newdent = d_alloc(dentry, &qname);
                 if (!newdent)