linux-kernel - [PATCH 05/17] Remove the automount through follow

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Message-ID: <20100930181521.30939.31415.stgit@warthog.procyon.org.uk>
Date:	Thu, 30 Sep 2010 19:15:21 +0100
From:	David Howells <dhowells@...hat.com>
To:	viro@....linux.org.uk, jmoyer@...hat.com
Cc:	linux-fs@...r.kernel.org, autofs@...ux.kernel.org,
	linux-kernel@...r.kernel.org, linux-afs@...ts.infradead.org,
	linux-nfs@...r.kernel.org, linux-cifs@...r.kernel.org,
	David Howells <dhowells@...hat.com>,
	Ian Kent <raven@...maw.net>
Subject: [PATCH 05/17] 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@...hat.com>
Acked-by: Ian Kent <raven@...maw.net>
---

 fs/namei.c |   17 +++--------------
 1 files changed, 3 insertions(+), 14 deletions(-)

diff --git a/fs/namei.c b/fs/namei.c
index c50b9d7..86421f9 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -861,17 +861,6 @@ fail:
 }
 
 /*
- * 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
  * the final dentry. We expect 'base' to be positive and a directory.
@@ -991,7 +980,8 @@ last_component:
 		if (err)
 			break;
 		inode = next.dentry->d_inode;
-		if (follow_on_final(inode, lookup_flags)) {
+		if (inode && unlikely(inode->i_op->follow_link) &&
+		    (lookup_flags & LOOKUP_FOLLOW)) {
 			err = do_follow_link(&next, nd);
 			if (err)
 				goto return_err;
@@ -1882,8 +1872,7 @@ reval:
 		struct inode *inode = path.dentry->d_inode;
 		void *cookie;
 		error = -ELOOP;
-		/* S_ISDIR part is a temporary automount kludge */
-		if (!(nd.flags & LOOKUP_FOLLOW) && !S_ISDIR(inode->i_mode))
+		if (!(nd.flags & LOOKUP_FOLLOW))
 			goto exit_dput;
 		if (count++ == 32)
 			goto exit_dput;

--
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