From: Chas Williams <chas@cmf.nrl.navy.mil>
Date: Thu, 9 Nov 2006 22:56:11 +0000 (+0000)
Subject: DEVEL15-linux26-disable-backing-readahead-20061109
X-Git-Tag: openafs-devel-1_5_11~13
X-Git-Url: https://git.michaelhowe.org/gitweb/?a=commitdiff_plain;h=6b355b4c3e611e28f783d404509e034c28ce1609;p=packages%2Fo%2Fopenafs.git

DEVEL15-linux26-disable-backing-readahead-20061109

FIXES 42797

disable vm readahead, we don't want it


(cherry picked from commit dd508cf7b4553b13872335ec1eb84401bc61435f)
---

diff --git a/src/afs/LINUX/osi_vfsops.c b/src/afs/LINUX/osi_vfsops.c
index 9c216064e..71f01b82a 100644
--- a/src/afs/LINUX/osi_vfsops.c
+++ b/src/afs/LINUX/osi_vfsops.c
@@ -105,8 +105,7 @@ struct file_system_type afs_fs_type = {
 
 #if defined(AFS_LINUX26_ENV)
 struct backing_dev_info afs_backing_dev_info = {
-	.ra_pages	= (VM_MAX_READAHEAD * 1024) / PAGE_CACHE_SIZE,
-	.state		= 0,
+    .ra_pages		= 0, /* disable readahead, afs does prefetch */
 };
 
 int