Re: [PATCH 0/8] Volatile Ranges (v8?)

From: Minchan Kim
Date: Wed Jun 19 2013 - 00:41:47 EST


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?


FYI: John, Dhaval

I am working to clean purging mess up so maybe it would need not a few
change for purging part.

Thanks!

--
Kind regards,
Minchan Kim
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