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From: Qing Huang <qing.huang@oracle.com>
To: Eric Dumazet <eric.dumazet@gmail.com>,
	David Miller <davem@davemloft.net>
Cc: tariqt@mellanox.com, haakon.bugge@oracle.com,
	yanjun.zhu@oracle.com, netdev@vger.kernel.org,
	linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org,
	gi-oh.kim@profitbricks.com
Subject: Re: [PATCH V4] mlx4_core: allocate ICM memory in page size chunks
Date: Wed, 30 May 2018 10:39:14 -0700	[thread overview]
Message-ID: <05a97a57-2a25-34b5-e8eb-6452d6bb419a@oracle.com> (raw)
In-Reply-To: <cdf0d1a9-378a-8b09-544e-a4918acb57fe@gmail.com>



On 5/29/2018 8:49 PM, Eric Dumazet wrote:
>
> On 05/29/2018 11:44 PM, Eric Dumazet wrote:
>
>> And I will add this simple fix, this really should address your initial concern much better.
>>
>> @@ -99,6 +100,8 @@ static int mlx4_alloc_icm_pages(struct scatterlist *mem, int order,
>>   {
>>          struct page *page;
>>   
>> +       if (order)
>> +               gfp_mask |= __GFP_NORETRY;
>      and also      gfp_mask &= ~__GFP_DIRECT_RECLAIM
>

Would this just fail the allocation without trying to reclaim memory 
under memory pressure? We've tried something similar but it didn't fix 
the original problem we were facing.


>>          page = alloc_pages_node(node, gfp_mask, order);
>>          if (!page) {
>>                  page = alloc_pages(gfp_mask, order);
>>

  reply	other threads:[~2018-05-30 17:39 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-23 23:22 [PATCH V4] mlx4_core: allocate ICM memory in page size chunks Qing Huang
2018-05-24  7:23 ` Gi-Oh Kim
2018-05-24  9:45 ` Tariq Toukan
2018-05-25 14:23 ` David Miller
2018-05-30  3:34   ` Eric Dumazet
2018-05-30  3:44     ` Eric Dumazet
2018-05-30  3:49       ` Eric Dumazet
2018-05-30 17:39         ` Qing Huang [this message]
2018-05-31  6:54         ` Michal Hocko
2018-05-31  8:35           ` Eric Dumazet
2018-05-31  8:55             ` Michal Hocko
2018-05-31  9:10               ` Michal Hocko
2018-06-01  2:04                 ` Qing Huang
2018-06-01  7:31                   ` Michal Hocko
2018-06-01 22:05                     ` Qing Huang
2018-06-04  6:27                       ` Michal Hocko
2018-06-04 12:40                         ` Vlastimil Babka
2018-06-05 18:51                           ` Qing Huang
2018-06-04 13:11                 ` Michal Hocko
2018-06-04 13:22                   ` Eric Dumazet
2018-06-05  8:32                     ` Michal Hocko
2018-05-30 17:53     ` Qing Huang

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