linux-kernel - Re: [PATCH v2] mm/mempolicy: fix NUMA_INTERLEAVE

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Message-ID: <20171003192233.6drmrp5huoxpctah@techsingularity.net>
Date:   Tue, 3 Oct 2017 20:22:33 +0100
From:   Mel Gorman <mgorman@...hsingularity.net>
To:     Andrey Ryabinin <aryabinin@...tuozzo.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Kemi Wang <kemi.wang@...el.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] mm/mempolicy: fix NUMA_INTERLEAVE_HIT counter

On Tue, Oct 03, 2017 at 10:10:03PM +0300, Andrey Ryabinin wrote:
> Commit 3a321d2a3dde separated NUMA counters from zone counters, but
> the NUMA_INTERLEAVE_HIT call site wasn't updated to use the new interface.
> So alloc_page_interleave() actually increments NR_ZONE_INACTIVE_FILE
> instead of NUMA_INTERLEAVE_HIT.
> 
> Fix this by using __inc_numa_state() interface to increment
> NUMA_INTERLEAVE_HIT.
> 
> Fixes: 3a321d2a3dde ("mm: change the call sites of numa statistics items")
> Signed-off-by: Andrey Ryabinin <aryabinin@...tuozzo.com>

Acked-by: Mel Gorman <mgorman@...hsingularity.net>

-- 
Mel Gorman
SUSE Labs