linux-kernel - Re: [PATCH] mm: folio: use copy_highpage() instead of folio_migrate

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Date:   Tue, 27 Jul 2021 12:46:35 +0100
From:   Matthew Wilcox <willy@...radead.org>
To:     Wang Qing <wangqing@...o.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: folio: use copy_highpage() instead of
 folio_migrate_copy() when copy once

On Tue, Jul 27, 2021 at 11:32:54AM +0800, Wang Qing wrote:
> folio_migrate_copy() will call cond_resched(), even if it only needs to be
> copied once, restore the previous implementation before there is a better
> solution: use copy_highpage() when copy once.

no.  i already fixed this on july 22.

https://lore.kernel.org/linux-mm/YPmB60EwQPpEvdb%2F@casper.infradead.org/