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Message-Id: <20091214213224.BBC6.A69D9226@jp.fujitsu.com> Date: Mon, 14 Dec 2009 21:32:58 +0900 (JST) From: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> To: Rik van Riel <riel@...hat.com> Cc: kosaki.motohiro@...fujitsu.com, lwoodman@...hat.com, akpm@...ux-foundation.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org, minchan.kim@...il.com Subject: [PATCH 8/8] mm: Give up allocation if the task have fatal signal In OOM case, almost processes may be in vmscan. There isn't any reason the killed process continue allocation. process exiting free lots pages rather than greedy vmscan. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> --- mm/page_alloc.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index ca9cae1..8a9cbaa 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1878,6 +1878,14 @@ rebalance: goto got_pg; /* + * If the allocation is for userland page and we have fatal signal, + * there isn't any reason to continue allocation. instead, the task + * should exit soon. + */ + if (fatal_signal_pending(current) && (gfp_mask & __GFP_HIGHMEM)) + goto nopage; + + /* * If we failed to make any progress reclaiming, then we are * running out of options and have to consider going OOM */ -- 1.6.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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