On Fri, Mar 4, 2016 at 4:48 PM, Vlastimil Babka <vbabka@xxxxxxx> wrote:
> On 03/03/2016 08:01 AM, Li Zhang wrote:
>> --- a/mm/page_alloc.c
>> +++ b/mm/page_alloc.c
>> @@ -293,13 +293,20 @@ static inline bool update_defer_init(pg_data_t *pgdat,
>> unsigned long pfn, unsigned long zone_end,
>> unsigned long *nr_initialised)
>> {
>> + unsigned long max_initialise;
>> +
>> /* Always populate low zones for address-contrained allocations */
>> if (zone_end < pgdat_end_pfn(pgdat))
>> return true;
>> + /*
>> + * Initialise at least 2G of a node but also take into account that
>> + * two large system hashes that can take up 1GB for 0.25TB/node.
>> + */
>
> The indentation is wrong here.
Thanks for reviewing, I will fix it in next version.
>
>> + max_initialise = max(2UL << (30 - PAGE_SHIFT),
>> + (pgdat->node_spanned_pages >> 8));
>>
>> - /* Initialise at least 2G of the highest zone */
>> (*nr_initialised)++;
>> - if (*nr_initialised > (2UL << (30 - PAGE_SHIFT)) &&
>> + if ((*nr_initialised > max_initialise) &&
>> (pfn & (PAGES_PER_SECTION - 1)) == 0) {
>> pgdat->first_deferred_pfn = pfn;
>> return false;
>>
>
--
Best Regards
-Li
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