[PATCH] add a vfs_permission helper

Most permission() calls have a struct nameidata * available.  This helper
takes that as an argument and thus makes sure we pass it down for lookup
intents and prepares for per-mount read-only support where we need a struct
vfsmount for checking whether a file is writeable.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 41feca3bef86..acc73ba8bade 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -676,7 +676,7 @@ static struct sock *unix_find_other(struct sockaddr_un *sunname, int len,
                 err = path_lookup(sunname->sun_path, LOOKUP_FOLLOW, &nd);
                 if (err)
                         goto fail;
-                err = permission(nd.dentry->d_inode,MAY_WRITE, &nd);
+                err = vfs_permission(&nd, MAY_WRITE);
                 if (err)
                         goto put_fail;