From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail6.bemta8.messagelabs.com (mail6.bemta8.messagelabs.com [216.82.243.55]) by kanga.kvack.org (Postfix) with ESMTP id 9830F6B002D for ; Wed, 19 Oct 2011 09:40:17 -0400 (EDT) Received: by wyg34 with SMTP id 34so2312010wyg.14 for ; Wed, 19 Oct 2011 06:40:15 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20111019074336.GB3410@suse.de> References: <201110122012.33767.pluto@agmk.net> <20111016235442.GB25266@redhat.com> <20111019074336.GB3410@suse.de> From: Linus Torvalds Date: Wed, 19 Oct 2011 06:39:55 -0700 Message-ID: Subject: Re: kernel 3.0: BUG: soft lockup: find_get_pages+0x51/0x110 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: Hugh Dickins , Andrea Arcangeli , Pawel Sikora , Andrew Morton , linux-mm@kvack.org, jpiszcz@lucidpixels.com, arekm@pld-linux.org, linux-kernel@vger.kernel.org On Wed, Oct 19, 2011 at 12:43 AM, Mel Gorman wrote: > > My vote is with the migration change. While there are occasionally > patches to make migration go faster, I don't consider it a hot path. > mremap may be used intensively by JVMs so I'd loathe to hurt it. Ok, everybody seems to like that more, and it removes code rather than adds it, so I certainly prefer it too. Pawe=C5=82, can you test that other patch (to mm/migrate.c) that Hugh posted? Instead of the mremap vma locking patch that you already verified for your setup? Hugh - that one didn't have a changelog/sign-off, so if you could write that up, and Pawe=C5=82's testing is successful, I can apply it... Looks like we have acks from both Andrea and Mel. Linus -- 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 internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org