9p: unify paths in v9fs_vfs_lookup()

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

diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 9ee5341..42e102e 100644 (file)
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -823,28 +823,21 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
        if (IS_ERR(dfid))
                return ERR_CAST(dfid);
 
-       name = dentry->d_name.name;
-       fid = p9_client_walk(dfid, 1, &name, 1);
-       if (IS_ERR(fid)) {
-               if (fid == ERR_PTR(-ENOENT)) {
-                       d_add(dentry, NULL);
-                       return NULL;
-               }
-               return ERR_CAST(fid);
-       }
        /*
         * Make sure we don't use a wrong inode due to parallel
         * unlink. For cached mode create calls request for new
         * inode. But with cache disabled, lookup should do this.
         */
-       if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
+       name = dentry->d_name.name;
+       fid = p9_client_walk(dfid, 1, &name, 1);
+       if (fid == ERR_PTR(-ENOENT))
+               inode = NULL;
+       else if (IS_ERR(fid))
+               inode = ERR_CAST(fid);
+       else if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
                inode = v9fs_get_inode_from_fid(v9ses, fid, dir->i_sb);
        else
                inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
-       if (IS_ERR(inode)) {
-               p9_client_clunk(fid);
-               return ERR_CAST(inode);
-       }
        /*
         * If we had a rename on the server and a parallel lookup
         * for the new name, then make sure we instantiate with
@@ -853,12 +846,14 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
         * k/b.
         */
        res = d_splice_alias(inode, dentry);
-       if (!res)
-               v9fs_fid_add(dentry, fid);
-       else if (!IS_ERR(res))
-               v9fs_fid_add(res, fid);
-       else
-               p9_client_clunk(fid);
+       if (!IS_ERR(fid)) {
+               if (!res)
+                       v9fs_fid_add(dentry, fid);
+               else if (!IS_ERR(res))
+                       v9fs_fid_add(res, fid);
+               else
+                       p9_client_clunk(fid);
+       }
        return res;
 }