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Subject: Re: [PATCH v2 14/20] mm: Provide speculative fault infrastructure
To: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: paulmck@linux.vnet.ibm.com, peterz@infradead.org,
 akpm@linux-foundation.org, kirill@shutemov.name, ak@linux.intel.com,
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 linux-kernel@vger.kernel.org, linux-mm@kvack.org,
 haren@linux.vnet.ibm.com, khandual@linux.vnet.ibm.com,
 npiggin@gmail.com, bsingharora@gmail.com,
 Tim Chen <tim.c.chen@linux.intel.com>, linuxppc-dev@lists.ozlabs.org,
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From: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Date: Fri, 25 Aug 2017 10:52:45 +0200
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On 20/08/2017 14:11, Sergey Senozhatsky wrote:
> On (08/18/17 00:05), Laurent Dufour wrote:
> [..]
>> +	/*
>> +	 * MPOL_INTERLEAVE implies additional check in mpol_misplaced() which
>> +	 * are not compatible with the speculative page fault processing.
>> +	 */
>> +	pol = __get_vma_policy(vma, address);
>> +	if (!pol)
>> +		pol = get_task_policy(current);
>> +	if (pol && pol->mode == MPOL_INTERLEAVE)
>> +		goto unlock;
> 
> include/linux/mempolicy.h defines
> 
> struct mempolicy *get_task_policy(struct task_struct *p);
> struct mempolicy *__get_vma_policy(struct vm_area_struct *vma,
> 		unsigned long addr);
> 
> only for CONFIG_NUMA configs.

Thanks Sergey, I'll add #ifdef around this block.