linux-kernel - [ 084/117] cifs: fix revalidation test in cifs

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Message-Id: <20120528031214.469676457@decadent.org.uk>
Date:	Mon, 28 May 2012 04:13:26 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Dan Carpenter <dan.carpenter@...cle.com>,
	Jeff Layton <jlayton@...hat.com>,
	Steve French <sfrench@...ibm.com>
Subject: [ 084/117] cifs: fix revalidation test in cifs_llseek()

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@...cle.com>

commit 48a5730e5b71201e226ff06e245bf308feba5f10 upstream.

This test is always true so it means we revalidate the length every
time, which generates more network traffic.  When it is SEEK_SET or
SEEK_CUR, then we don't need to revalidate.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Reviewed-by: Jeff Layton <jlayton@...hat.com>
Signed-off-by: Steve French <sfrench@...ibm.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 fs/cifs/cifsfs.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index ca6a379..541ef81 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -699,7 +699,7 @@ static loff_t cifs_llseek(struct file *file, loff_t offset, int origin)
 	 * origin == SEEK_END || SEEK_DATA || SEEK_HOLE => we must revalidate
 	 * the cached file length
 	 */
-	if (origin != SEEK_SET || origin != SEEK_CUR) {
+	if (origin != SEEK_SET && origin != SEEK_CUR) {
 		int rc;
 		struct inode *inode = file->f_path.dentry->d_inode;
 


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