From: Mel Gorman <mel@csn.ul.ie>
To: linux-mm@kvack.org
Cc: Mel Gorman <mel@csn.ul.ie>,
linux-kernel@vger.kernel.org, lhms-devel@lists.sourceforge.net
Subject: [PATCH 8/9] ForTesting - Prevent OOM killer firing for high-order allocations
Date: Thu, 26 Jan 2006 18:45:45 +0000 (GMT) [thread overview]
Message-ID: <20060126184545.8550.7404.sendpatchset@skynet.csn.ul.ie> (raw)
In-Reply-To: <20060126184305.8550.94358.sendpatchset@skynet.csn.ul.ie>
Stop going OOM for high-order allocations. During testing of high order
allocations, we do not want the OOM killing everything in sight.
For comparison between kernels during the high order allocatioon stress
test, this patch is applied to both the stock -mm kernel and the kernel
using ZONE_EASYRCLM.
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
diff -rup -X /usr/src/patchset-0.6/bin//dontdiff linux-2.6.16-rc1-mm3-108_docs/mm/page_alloc.c linux-2.6.16-rc1-mm3-902_highorderoom/mm/page_alloc.c
--- linux-2.6.16-rc1-mm3-108_docs/mm/page_alloc.c 2006-01-26 18:10:29.000000000 +0000
+++ linux-2.6.16-rc1-mm3-902_highorderoom/mm/page_alloc.c 2006-01-26 18:15:07.000000000 +0000
@@ -1095,8 +1095,11 @@ rebalance:
if (page)
goto got_pg;
- out_of_memory(gfp_mask, order);
- goto restart;
+ /* Only go OOM for low-order allocations */
+ if (order <= 3) {
+ out_of_memory(gfp_mask, order);
+ goto restart;
+ }
}
/*
next prev parent reply other threads:[~2006-01-26 18:47 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-26 18:43 [PATCH 0/9] Reducing fragmentation using zones v4 Mel Gorman
2006-01-26 18:43 ` [PATCH 1/9] Add __GFP_EASYRCLM flag and update callers Mel Gorman
2006-01-26 18:43 ` [PATCH 2/9] Create the ZONE_EASYRCLM zone Mel Gorman
2006-01-26 18:44 ` [PATCH 3/9] x86 - Specify amount of kernel memory at boot time Mel Gorman
2006-01-26 18:44 ` [PATCH 4/9] ppc64 " Mel Gorman
2006-02-07 21:06 ` [Lhms-devel] " Joel Schopp
2006-02-08 10:23 ` Mel Gorman
2006-01-26 18:44 ` [PATCH 5/9] At boot, determine what zone memory will hot-add to Mel Gorman
2006-01-26 18:45 ` [PATCH 6/9] Allow HugeTLB allocations to use ZONE_EASYRCLM Mel Gorman
2006-01-26 18:45 ` [PATCH 7/9] Add documentation for extra boot parameters Mel Gorman
2006-01-26 18:45 ` Mel Gorman [this message]
2006-01-26 18:46 ` [PATCH 9/9] ForTesting - Drain the per-cpu caches with high order allocations fail Mel Gorman
2006-01-27 0:29 ` [PATCH 0/9] Reducing fragmentation using zones v4 KAMEZAWA Hiroyuki
2006-01-27 0:41 ` [Lhms-devel] " KAMEZAWA Hiroyuki
2006-01-27 10:29 ` Mel Gorman
2006-01-27 11:19 ` KAMEZAWA Hiroyuki
2006-01-27 11:42 ` Mel Gorman
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