Messages in this thread Patch in this message | | | From | Mel Gorman <> | Subject | [PATCH 8/9] ForTesting - Prevent OOM killer firing for high-order allocations | Date | Thu, 26 Jan 2006 18:45:45 +0000 (GMT) |
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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; + } } /* - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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