From: Al Viro <viro@zeniv.linux.org.uk>
Date: Mon, 9 Mar 2015 03:36:51 +0000 (-0400)
Subject: drop bogus check in file_open_root()
X-Git-Tag: firefly_0821_release~176^2~1853^2~97
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e5b811e38af7540b385c898d83eb0198310343fd;p=firefly-linux-kernel-4.4.55.git

drop bogus check in file_open_root()

For one thing, LOOKUP_DIRECTORY will be dealt with in do_last().
For another, name can be an empty string, but not NULL - no callers
pass that and it would oops immediately if they would.

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

diff --git a/fs/open.c b/fs/open.c
index 33f9cbf2610b..ebcc7df0c9b6 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -988,9 +988,6 @@ struct file *file_open_root(struct dentry *dentry, struct vfsmount *mnt,
 		return ERR_PTR(err);
 	if (flags & O_CREAT)
 		return ERR_PTR(-EINVAL);
-	if (!filename && (flags & O_DIRECTORY))
-		if (!dentry->d_inode->i_op->lookup)
-			return ERR_PTR(-ENOTDIR);
 	return do_file_open_root(dentry, mnt, filename, &op);
 }
 EXPORT_SYMBOL(file_open_root);