From: Ian Kent <raven@themaw.net>
Date: Wed, 16 Dec 2009 00:45:44 +0000 (-0800)
Subject: autofs4: use helper function for need mount check
X-Git-Tag: upstream/snapshot3+hdmi~16132^2~165
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=36b6413ef301d30f60037e497ecb902897895473;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

autofs4: use helper function for need mount check

Define simple helper function for checking if we need to trigger a mount.

Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Sage Weil <sage@newdream.net>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Andreas Dilger <adilger@sun.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Yehuda Saheh <yehuda@newdream.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 2954ac5..f6e8ca9 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -104,6 +104,14 @@ static void autofs4_del_active(struct dentry *dentry)
 	return;
 }
 
+static unsigned int autofs4_need_mount(unsigned int flags)
+{
+	unsigned int res = 0;
+	if (flags & (TRIGGER_FLAGS | TRIGGER_INTENTS))
+		res = 1;
+	return res;
+}
+
 static int autofs4_dir_open(struct inode *inode, struct file *file)
 {
 	struct dentry *dentry = file->f_path.dentry;
@@ -168,7 +176,7 @@ static int try_to_fill_dentry(struct dentry *dentry, int flags)
 		}
 	/* Trigger mount for path component or follow link */
 	} else if (dentry->d_flags & DCACHE_AUTOFS_PENDING ||
-			flags & (TRIGGER_FLAGS | TRIGGER_INTENTS) ||
+			autofs4_need_mount(flags) ||
 			current->link_count) {
 		DPRINTK("waiting for mount name=%.*s",
 			dentry->d_name.len, dentry->d_name.name);
@@ -234,7 +242,7 @@ static void *autofs4_follow_link(struct dentry *dentry, struct nameidata *nd)
 	autofs4_expire_wait(dentry);
 
 	/* We trigger a mount for almost all flags */
-	lookup_type = nd->flags & (TRIGGER_FLAGS | TRIGGER_INTENTS);
+	lookup_type = autofs4_need_mount(nd->flags);
 	if (!(lookup_type || dentry->d_flags & DCACHE_AUTOFS_PENDING))
 		goto follow;