From: David Howells <dhowells@redhat.com>
Date: Fri, 14 Jan 2011 18:45:53 +0000 (+0000)
Subject: Remove the automount through follow_link() kludge code from pathwalk
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=db3729153e82ba3ada89681f26c4f1b6d6807a80;p=openwrt%2Fstaging%2Fblogic.git

Remove the automount through follow_link() kludge code from pathwalk

Remove the automount through follow_link() kludge code from pathwalk in favour
of using d_automount().

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Ian Kent <raven@themaw.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/namei.c b/fs/namei.c
index dc50bfb2f5d6..61995fba4e21 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1341,17 +1341,6 @@ fail:
 	return PTR_ERR(dentry);
 }
 
-/*
- * This is a temporary kludge to deal with "automount" symlinks; proper
- * solution is to trigger them on follow_mount(), so that do_lookup()
- * would DTRT.  To be killed before 2.6.34-final.
- */
-static inline int follow_on_final(struct inode *inode, unsigned lookup_flags)
-{
-	return inode && unlikely(inode->i_op->follow_link) &&
-		((lookup_flags & LOOKUP_FOLLOW) || S_ISDIR(inode->i_mode));
-}
-
 /*
  * Name resolution.
  * This is the basic name resolution function, turning a pathname into
@@ -1490,7 +1479,8 @@ last_component:
 		err = do_lookup(nd, &this, &next, &inode);
 		if (err)
 			break;
-		if (follow_on_final(inode, lookup_flags)) {
+		if (inode && unlikely(inode->i_op->follow_link) &&
+		    (lookup_flags & LOOKUP_FOLLOW)) {
 			if (nameidata_dentry_drop_rcu_maybe(nd, next.dentry))
 				return -ECHILD;
 			BUG_ON(inode != next.dentry->d_inode);
@@ -2543,8 +2533,7 @@ reval:
 		struct inode *linki = link.dentry->d_inode;
 		void *cookie;
 		error = -ELOOP;
-		/* S_ISDIR part is a temporary automount kludge */
-		if (!(nd.flags & LOOKUP_FOLLOW) && !S_ISDIR(linki->i_mode))
+		if (!(nd.flags & LOOKUP_FOLLOW))
 			goto exit_dput;
 		if (count++ == 32)
 			goto exit_dput;