kill lookup_create()

folded into the only caller (kern_path_create())

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

diff --git a/fs/namei.c b/fs/namei.c
index b292eb0..b45a039 100644 (file)
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2258,35 +2258,29 @@ struct file *do_file_open_root(struct dentry *dentry, struct vfsmount *mnt,
        return file;
 }
 
-/**
- * lookup_create - lookup a dentry, creating it if it doesn't exist
- * @nd: nameidata info
- * @is_dir: directory flag
- *
- * Simple function to lookup and return a dentry and create it
- * if it doesn't exist.  Is SMP-safe.
- *
- * Returns with nd->path.dentry->d_inode->i_mutex locked.
- */
-struct dentry *lookup_create(struct nameidata *nd, int is_dir)
+struct dentry *kern_path_create(int dfd, const char *pathname, struct path *path, int is_dir)
 {
        struct dentry *dentry = ERR_PTR(-EEXIST);
+       struct nameidata nd;
+       int error = do_path_lookup(dfd, pathname, LOOKUP_PARENT, &nd);
+       if (error)
+               return ERR_PTR(error);
 
-       mutex_lock_nested(&nd->path.dentry->d_inode->i_mutex, I_MUTEX_PARENT);
        /*
         * Yucky last component or no last component at all?
         * (foo/., foo/.., /////)
         */
-       if (nd->last_type != LAST_NORM)
-               goto fail;
-       nd->flags &= ~LOOKUP_PARENT;
-       nd->flags |= LOOKUP_CREATE | LOOKUP_EXCL;
-       nd->intent.open.flags = O_EXCL;
+       if (nd.last_type != LAST_NORM)
+               goto out;
+       nd.flags &= ~LOOKUP_PARENT;
+       nd.flags |= LOOKUP_CREATE | LOOKUP_EXCL;
+       nd.intent.open.flags = O_EXCL;
 
        /*
         * Do the final lookup.
         */
-       dentry = lookup_hash(nd);
+       mutex_lock_nested(&nd.path.dentry->d_inode->i_mutex, I_MUTEX_PARENT);
+       dentry = lookup_hash(&nd);
        if (IS_ERR(dentry))
                goto fail;
 
@@ -2298,34 +2292,22 @@ struct dentry *lookup_create(struct nameidata *nd, int is_dir)
         * all is fine. Let's be bastards - you had / on the end, you've
         * been asking for (non-existent) directory. -ENOENT for you.
         */
-       if (unlikely(!is_dir && nd->last.name[nd->last.len])) {
+       if (unlikely(!is_dir && nd.last.name[nd.last.len])) {
                dput(dentry);
                dentry = ERR_PTR(-ENOENT);
+               goto fail;
        }
+       *path = nd.path;
        return dentry;
 eexist:
        dput(dentry);
        dentry = ERR_PTR(-EEXIST);
 fail:
+       mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
+out:
+       path_put(&nd.path);
        return dentry;
 }
-EXPORT_SYMBOL_GPL(lookup_create);
-
-struct dentry *kern_path_create(int dfd, const char *pathname, struct path *path, int is_dir)
-{
-       struct nameidata nd;
-       struct dentry *res;
-       int error = do_path_lookup(dfd, pathname, LOOKUP_PARENT, &nd);
-       if (error)
-               return ERR_PTR(error);
-       res = lookup_create(&nd, is_dir);
-       if (IS_ERR(res)) {
-               mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
-               path_put(&nd.path);
-       }
-       *path = nd.path;
-       return res;
-}
 EXPORT_SYMBOL(kern_path_create);
 
 struct dentry *user_path_create(int dfd, const char __user *pathname, struct path *path, int is_dir)

diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 5fa5bd3..3f22d8d 100644 (file)
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -423,7 +423,6 @@ static inline bool d_need_lookup(struct dentry *dentry)
 }
 
 extern void d_clear_need_lookup(struct dentry *dentry);
-extern struct dentry *lookup_create(struct nameidata *nd, int is_dir);
 
 extern int sysctl_vfs_cache_pressure;