linux-kernel - Re: [PATCH V2] Test compaction of mlocked memory

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Message-Id: <20150423132323.a3bd1dcdc94a2da3ca06a30d@linux-foundation.org>
Date:	Thu, 23 Apr 2015 13:23:23 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Eric B Munson <emunson@...mai.com>
Cc:	Sri Jayaramappa <sjayaram@...mai.com>,
	Shuah Khan <shuahkh@....samsung.com>,
	linux-kernel@...r.kernel.org, linux-api@...r.kernel.org
Subject: Re: [PATCH V2] Test compaction of mlocked memory

On Thu, 23 Apr 2015 14:41:34 -0400 Eric B Munson <emunson@...mai.com> wrote:

> On Thu, 23 Apr 2015, Sri Jayaramappa wrote:
> 
> > Commit commit 5bbe3547aa3b ("mm: allow compaction of unevictable pages")
> > introduced a sysctl that allows userspace to enable scanning of locked
> > pages for compaction.  This patch introduces a new test which fragments
> > main memory and attempts to allocate a number of huge pages to exercise
> > this compaction logic.
> > 
> > Tested on machines with up to 32 GB RAM. With the patch a much larger
> > number of huge pages can be allocated than on the kernel without the
> > patch.
> > 
> > Example output:
> > On a machine with 16 GB RAM:
> > sudo make run_tests vm
> > ...
> > -----------------------
> > running compaction_test
> > -----------------------
> > No of huge pages allocated = 3834
> > [PASS]
> > ...
> > 
> > Signed-off-by: Sri Jayaramappa <sjayaram@...mai.com>
> > Cc: linux-kernel@...r.kernel.org
> > Cc: linux-api@...r.kernel.org
> > Cc: Andrew Morton <akpm@...ux-foundation.org>
> > Cc: Eric B Munson <emunson@...mai.com>
> 
> Reviewed-by: Eric B Munson <emunson@...mai.com>

Acked-by: Andrew Morton <akpm@...ux-foundation.org>

I'm assuming that Shuah will process this one?
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