From: Phillip Lougher <phillip@squashfs.org.uk>
Date: Fri, 9 Mar 2012 02:27:49 +0000 (+0000)
Subject: Squashfs: fix f_pos check in get_dir_index_using_offset
X-Git-Tag: v3.4-rc1~52^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2158d3fd2769546cd9004eaeb776fee946155238;p=profile%2Fivi%2Fkernel-adaptation-intel-automotive.git

Squashfs: fix f_pos check in get_dir_index_using_offset

One off error in the f_pos check.  If f_pos is 3 or less don't
bother reading the index because we're at the start of the
directory, and we obviously already know where that is on disk.

This eliminates an unnecessary read.

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
---

diff --git a/fs/squashfs/dir.c b/fs/squashfs/dir.c
index 7142a6f..b381305 100644
--- a/fs/squashfs/dir.c
+++ b/fs/squashfs/dir.c
@@ -64,7 +64,7 @@ static int get_dir_index_using_offset(struct super_block *sb,
 	 * is offset by 3 because we invent "." and ".." entries which are
 	 * not actually stored in the directory.
 	 */
-	if (f_pos < 3)
+	if (f_pos <= 3)
 		return f_pos;
 	f_pos -= 3;