From 996af4066deafecf3fa35f2eddfeeb3f35654d64 Mon Sep 17 00:00:00 2001
From: anserper <anserper>
Date: Thu, 10 Jul 2008 22:06:48 +0000
Subject: [PATCH] Branch HEAD
b=16037
i=Alexey Lyashkov(shadow)
i=Johann Lombardi(johann)
Limit amount of ll pages with a part of lowmem pages instead of total number of pages (affects 32-bit platforms).
---
lustre/llite/llite_lib.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/lustre/llite/llite_lib.c b/lustre/llite/llite_lib.c
index 941a42a1dd..63a52b5e57 100644
--- a/lustre/llite/llite_lib.c
+++ b/lustre/llite/llite_lib.c
@@ -27,6 +27,7 @@
#include <linux/types.h>
#include <linux/random.h>
#include <linux/version.h>
+#include <linux/mm.h>
#include <lustre_lite.h>
#include <lustre_ha.h>
@@ -55,6 +56,8 @@ extern struct address_space_operations ll_dir_aops;
static struct ll_sb_info *ll_init_sbi(void)
{
struct ll_sb_info *sbi = NULL;
+ unsigned long pages;
+ struct sysinfo si;
class_uuid_t uuid;
int i;
ENTRY;
@@ -69,10 +72,13 @@ static struct ll_sb_info *ll_init_sbi(void)
spin_lock_init(&sbi->ll_process_lock);
sbi->ll_rw_stats_on = 0;
INIT_LIST_HEAD(&sbi->ll_pglist);
- if (num_physpages >> (20 - CFS_PAGE_SHIFT) < 512)
- sbi->ll_async_page_max = num_physpages / 2;
+
+ si_meminfo(&si);
+ pages = si.totalram - si.totalhigh;
+ if (pages >> (20 - CFS_PAGE_SHIFT) < 512)
+ sbi->ll_async_page_max = pages / 2;
else
- sbi->ll_async_page_max = (num_physpages / 4) * 3;
+ sbi->ll_async_page_max = (pages / 4) * 3;
sbi->ll_ra_info.ra_max_pages = min(num_physpages / 8,
SBI_DEFAULT_READAHEAD_MAX);
sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
--
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