From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with ESMTP id 645208D0039 for ; Mon, 17 Jan 2011 09:10:56 -0500 (EST) Content-Type: text/plain; charset=UTF-8 From: Chris Mason Subject: Re: hunting an IO hang In-reply-to: <20110117051135.GI9506@random.random> References: <1295225684-sup-7168@think> <4D339C87.30100@fusionio.com> <1295228148-sup-7379@think> <1295229722-sup-6494@think> <20110116183000.cc632557.akpm@linux-foundation.org> <1295231547-sup-8036@think> <20110117051135.GI9506@random.random> Date: Mon, 17 Jan 2011 09:10:15 -0500 Message-Id: <1295273312-sup-6780@think> Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org To: Andrea Arcangeli Cc: Andrew Morton , Linus Torvalds , Jens Axboe , linux-mm , KAMEZAWA Hiroyuki , Mel Gorman , Minchan Kim List-ID: Excerpts from Andrea Arcangeli's message of 2011-01-17 00:11:35 -0500: [ crashes under load ] > > NOTE: with the last changes compaction is used for all order > 0 and > even from kswapd, so you will now be able to trigger bugs in > compaction or migration even with THP off. However I'm surprised that > you have issues with compaction... I know I mentioned this in another email, but it is kind of buried in other context. I reproduced my crash with CONFIG_COMPACTION and CONFIG_MIGRATION off. -chris -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: email@kvack.org