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Date: Fri, 4 Jan 2019 09:46:08 +0000
From: Mel Gorman <mgorman@techsingularity.net>
Subject: Re: [PATCH] mm, page_alloc: Do not wake kswapd with zone lock held
Message-ID: <20190104094608.GK31517@techsingularity.net>
References: <20190103225712.GJ31517@techsingularity.net>
 <51d17b9f-5c5b-5964-0943-668b679964cd@suse.cz>
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Sender: owner-linux-mm@kvack.org
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To: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>, Qian Cai <cai@lca.pw>, Dmitry Vyukov <dvyukov@google.com>, syzbot <syzbot+93d94a001cfbce9e60e1@syzkaller.appspotmail.com>, LKML <linux-kernel@vger.kernel.org>, Linux-MM <linux-mm@kvack.org>, linux@dominikbrodowski.net, Michal Hocko <mhocko@suse.com>, syzkaller-bugs <syzkaller-bugs@googlegroups.com>

On Fri, Jan 04, 2019 at 09:18:38AM +0100, Vlastimil Babka wrote:
> On 1/3/19 11:57 PM, Mel Gorman wrote:
> > While zone->flag could have continued to be unused, there is potential
> > for moving some existing fields into the flags field instead. Particularly
> > read-mostly ones like zone->initialized and zone->contiguous.
> > 
> > Reported-by: syzbot+93d94a001cfbce9e60e1@syzkaller.appspotmail.com
> > Tested-by: Qian Cai <cai@lca.pw>
> > Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
> 
> Fixes: 1c30844d2dfe ("mm: reclaim small amounts of memory when an
> external fragmentation event occurs")
> Acked-by: Vlastimil Babka <vbabka@suse.cz>
> 

Thanks

-- 
Mel Gorman
SUSE Labs