linux-kernel - Re: [PATCH] mm/page_alloc: Clarify some migratetype fallback code

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Message-ID: <345e4f5b-2427-4964-b0f1-e6f72e48f409@suse.cz>
Date: Wed, 19 Feb 2025 12:01:40 +0100
From: Vlastimil Babka <vbabka@...e.cz>
To: Johannes Weiner <hannes@...xchg.org>
Cc: Brendan Jackman <jackmanb@...gle.com>,
 Andrew Morton <akpm@...ux-foundation.org>,
 Mel Gorman <mgorman@...hsingularity.net>, Michal Hocko <mhocko@...nel.org>,
 linux-mm@...ck.org, linux-kernel@...r.kernel.org,
 Yosry Ahmed <yosry.ahmed@...ux.dev>
Subject: Re: [PATCH] mm/page_alloc: Clarify some migratetype fallback code

On 2/18/25 21:38, Johannes Weiner wrote:
> It still makes sense to have the two passes, though, right? One pass
> where we try to steal a whole block starting from the biggest buddies;
> and then one pass where we try to steal an individual page starting
> from the smallest buddies.

Yes.

> Something like this, completely untested draft:

Looks good to me!