From 597b99b09a007dfa8ddfce31c480765b0c7baa6a Mon Sep 17 00:00:00 2001

From: Michal Schmidt <mschmidt@redhat.com>

Date: Fri, 10 Jun 2011 14:37:21 +0200

Subject: [PATCH 6/6] readahead-common: fix total memory size detection

sysinfo returns the total memory size in multiples of mem_unit bytes.

As long as the size in bytes fits into unsigned long, the kernel uses

mem_unit = 1, but this is not true on i386 with more than 4 GB RAM.

https://bugzilla.redhat.com/show_bug.cgi?id=712341

---

 src/readahead-common.c |    5 ++---

 1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/readahead-common.c b/src/readahead-common.c

index 8a75b2e..f0d57b4 100644

--- a/src/readahead-common.c

+++ b/src/readahead-common.c

@@ -154,9 +154,8 @@ bool enough_ram(void) {

         assert_se(sysinfo(&si) >= 0);

-        return si.totalram > 127 * 1024*1024; /* Enable readahead only

-                                               * with at least 128MB

-                                               * memory */

+        /* Enable readahead only with at least 128MB memory */

+        return si.totalram > 127 * 1024*1024 / si.mem_unit;

 }

 int open_inotify(void) {

-- 

1.7.4.4