Re: [PATCH v2] vmscan: return NODE_RECLAIM_NOSCAN in node_reclaim() when CONFIG_NUMA is n

[Wei Yang]

On Tue, Nov 13, 2018 at 05:04:20AM -0800, Matthew Wilcox wrote:
>On Tue, Nov 13, 2018 at 04:04:36PM +0800, Wei Yang wrote:
>> Commit fa5e084e43eb ("vmscan: do not unconditionally treat zones that
>> fail zone_reclaim() as full") changed the return value of node_reclaim().
>> The original return value 0 means NODE_RECLAIM_SOME after this commit.
>> 
>> While the return value of node_reclaim() when CONFIG_NUMA is n is not
>> changed. This will leads to call zone_watermark_ok() again.
>> 
>> This patch fix the return value by adjusting to NODE_RECLAIM_NOSCAN. Since
>> node_reclaim() is only called in page_alloc.c, move it to mm/internal.h.
>> 
>> Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx>
>
>Reviewed-by: Matthew Wilcox <willy@xxxxxxxxxxxxx>

Thanks

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Wei Yang
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