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 (file)
--- 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;