From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx148.postini.com [74.125.245.148]) by kanga.kvack.org (Postfix) with SMTP id 681966B0033 for ; Wed, 19 Jun 2013 14:37:01 -0400 (EDT) Message-ID: <51C1FA48.2000401@mozilla.com> Date: Wed, 19 Jun 2013 14:36:56 -0400 From: Dhaval Giani MIME-Version: 1.0 Subject: Re: [PATCH 0/8] Volatile Ranges (v8?) References: <1371010971-15647-1-git-send-email-john.stultz@linaro.org> <51BF3827.4060606@mozilla.com> <20130618041100.GA3116@bbox> <51C091D6.8010608@mozilla.com> <20130619044147.GC10961@bbox> In-Reply-To: <20130619044147.GC10961@bbox> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Minchan Kim Cc: John Stultz , LKML , Andrew Morton , Android Kernel Team , Robert Love , Mel Gorman , Hugh Dickins , Dave Hansen , Rik van Riel , Dmitry Adamushko , Dave Chinner , Neil Brown , Andrea Righi , Andrea Arcangeli , "Aneesh Kumar K.V" , Mike Hommey , Taras Glek , Jan Kara , KOSAKI Motohiro , Michel Lespinasse , "linux-mm@kvack.org" On 2013-06-19 12:41 AM, Minchan Kim wrote: > Hello Dhaval, > > On Tue, Jun 18, 2013 at 12:59:02PM -0400, Dhaval Giani wrote: >> On 2013-06-18 12:11 AM, Minchan Kim wrote: >>> Hello Dhaval, >>> >>> On Mon, Jun 17, 2013 at 12:24:07PM -0400, Dhaval Giani wrote: >>>> Hi John, >>>> >>>> I have been giving your git tree a whirl, and in order to simulate a >>>> limited memory environment, I was using memory cgroups. >>>> >>>> The program I was using to test is attached here. It is your test >>>> code, with some changes (changing the syscall interface, reducing >>>> the memory pressure to be generated). >>>> >>>> I trapped it in a memory cgroup with 1MB memory.limit_in_bytes and hit this, >>>> >>>> [ 406.207612] ------------[ cut here ]------------ >>>> [ 406.207621] kernel BUG at mm/vrange.c:523! >>>> [ 406.207626] invalid opcode: 0000 [#1] SMP >>>> [ 406.207631] Modules linked in: >>>> [ 406.207637] CPU: 0 PID: 1579 Comm: volatile-test Not tainted >>> Thanks for the testing! >>> Does below patch fix your problem? >> Yes it does! Thank you very much for the patch. > Thaks for the confirming. > While I tested it, I found several problems so I just sent fixes as reply > of each [7/8] and [8/8]. > Could you test it? Great! These patches (seem to) fix another issue I noticed yesterday with signal handling. I have pushed out my code for testing this stuff at https://github.com/volatile-ranges-test/vranges-test . The code and the scripts are still unpolished (as in you don't get a pass or fail) but they seem to work just fine. > > FYI: John, Dhaval > > I am working to clean purging mess up so maybe it would need not a few > change for purging part. Great, I will also take a look at the code. Dhaval -- 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/ . Don't email: email@kvack.org