Re: [PATCH] mm, page_alloc: Do not wake kswapd with zone lock held

From: Mel Gorman
Date: Fri Jan 04 2019 - 04:46:13 EST


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@xxxxxxxxxxxxxxxxxxxxxxxxx
> > Tested-by: Qian Cai <cai@xxxxxx>
> > Signed-off-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
>
> Fixes: 1c30844d2dfe ("mm: reclaim small amounts of memory when an
> external fragmentation event occurs")
> Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
>

Thanks

--
Mel Gorman
SUSE Labs