linux-kernel - Re: [RFC PATCHv2] mm: introduce defer free for cma

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Message-ID: <5e010945-3603-d0ab-52c1-12cce3c85c3d@redhat.com>
Date:   Tue, 11 Apr 2023 10:54:25 +0200
From:   David Hildenbrand <david@...hat.com>
To:     "zhaoyang.huang" <zhaoyang.huang@...soc.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Minchan Kim <minchan@...nel.org>,
        Joonsoo Kim <iamjoonsoo.kim@....com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org,
        Zhaoyang Huang <huangzhaoyang@...il.com>, ke.wang@...soc.com
Subject: Re: [RFC PATCHv2] mm: introduce defer free for cma

On 10.04.23 10:46, zhaoyang.huang wrote:
> From: Zhaoyang Huang <zhaoyang.huang@...soc.com>
> 
> Continues page blocks are expensive for the system. Introducing defer free
> mechanism to buffer some which make the allocation easier. The shrinker will
> ensure the page block can be reclaimed when there is memory pressure.

This looks unnecessarily complicated without any good motivation and 
performance numbers why we should even care.

-- 
Thanks,

David / dhildenb