From: Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
To: Shakeel Butt <shakeelb-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
Cc: Michal Hocko <mhocko-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Mel Gorman
<mgorman-3eNAlZScCAx27rWaFMvyedHuzzzSOjJt@public.gmane.org>,
Uladzislau Rezki <urezki-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Vasily Averin <vvs-5HdwGun5lf+gSpxsJD1C4w@public.gmane.org>,
Roman Gushchin <guro-b10kYP2dOMg@public.gmane.org>,
Matthew Wilcox <willy-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH v2] memcg: page_alloc: skip bulk allocator for __GFP_ACCOUNT
Date: Thu, 14 Oct 2021 13:53:49 -0400 [thread overview]
Message-ID: <YWhurV5tLsMZQaA9@cmpxchg.org> (raw)
In-Reply-To: <20211014151607.2171970-1-shakeelb-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
On Thu, Oct 14, 2021 at 08:16:07AM -0700, Shakeel Butt wrote:
> The commit 5c1f4e690eec ("mm/vmalloc: switch to bulk allocator in
> __vmalloc_area_node()") switched to bulk page allocator for order 0
> allocation backing vmalloc. However bulk page allocator does not support
> __GFP_ACCOUNT allocations and there are several users of
> kvmalloc(__GFP_ACCOUNT).
>
> For now make __GFP_ACCOUNT allocations bypass bulk page allocator. In
> future if there is workload that can be significantly improved with the
> bulk page allocator with __GFP_ACCCOUNT support, we can revisit the
> decision.
>
> Fixes: 5c1f4e690eec ("mm/vmalloc: switch to bulk allocator in __vmalloc_area_node()")
> Signed-off-by: Shakeel Butt <shakeelb-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
Acked-by: Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
next prev parent reply other threads:[~2021-10-14 17:53 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-14 15:16 [PATCH v2] memcg: page_alloc: skip bulk allocator for __GFP_ACCOUNT Shakeel Butt
2021-10-14 15:24 ` David Hildenbrand
[not found] ` <20211014151607.2171970-1-shakeelb-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2021-10-14 15:32 ` Michal Hocko
2021-10-14 16:13 ` Roman Gushchin
2021-10-14 17:53 ` Johannes Weiner [this message]
2021-10-15 12:19 ` Vasily Averin
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