linux-kernel - Re: [PATCH] memcg: page_alloc: skip bulk allocator for __GFP

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Message-ID: <f4fd9e5f-b054-41af-e8a8-7a3074f937d8@virtuozzo.com>
Date:   Thu, 14 Oct 2021 20:43:16 +0300
From:   Vasily Averin <vvs@...tuozzo.com>
To:     Johannes Weiner <hannes@...xchg.org>,
        Shakeel Butt <shakeelb@...gle.com>
Cc:     Michal Hocko <mhocko@...e.com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Uladzislau Rezki <urezki@...il.com>,
        Roman Gushchin <guro@...com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Cgroups <cgroups@...r.kernel.org>, Linux MM <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] memcg: page_alloc: skip bulk allocator for __GFP_ACCOUNT

On 14.10.2021 18:23, Johannes Weiner wrote:
> On Thu, Oct 14, 2021 at 08:01:16AM -0700, Shakeel Butt wrote:
>> Regarding xfs_buf_alloc_pages(), it is not using __GFP_ACCOUNT
> 
> It probably should, actually. Sorry, somewhat off-topic, but we've
> seen this consume quite large amounts of memory. __GFP_ACCOUNT and
> vmstat tracking seems overdue for this one.

If this will be required, you can use
[PATCH mm v5] memcg: enable memory accounting in __alloc_pages_bulk
https://lkml.org/lkml/2021/10/14/197

As far as I understand it will not be used right now,
however I decided to submit it anyway, perhaps it may be needed later.

Thank you,
	Vasily Averin