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Date:   Wed, 16 Mar 2022 14:11:35 +0000
From:   Matthew Wilcox <willy@infradead.org>
To:     Miaohe Lin <linmiaohe@huawei.com>
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Subject: Re: [PATCH] mm/damon: minor cleanup for damon_pa_young
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On Wed, Mar 16, 2022 at 04:15:28PM +0800, Miaohe Lin wrote:
> if need_lock is true but folio_trylock fails, we should return false
> instead of NULL to match the return value type exactly. No functional
> change intended.

Thanks.  Given the extensive changes I've made to this function for
this merge window, I've added it to my for-next tree.