linux-kernel - Re: [RFC PATCH -next 14/16] mm/damon/core: convert sz to byte units when updating state

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Message-ID: <688958ee-4db6-4c33-8640-df69e5d87e9b@huawei.com>
Date: Wed, 20 Aug 2025 18:10:26 +0800
From: Quanmin Yan <yanquanmin1@...wei.com>
To: SeongJae Park <sj@...nel.org>
CC: <akpm@...ux-foundation.org>, <damon@...ts.linux.dev>,
	<linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
	<wangkefeng.wang@...wei.com>, <zuoze1@...wei.com>
Subject: Re: [RFC PATCH -next 14/16] mm/damon/core: convert sz to byte units
 when updating state

Hi SJ,

在 2025/8/14 1:08, SeongJae Park 写道:
> On Wed, 13 Aug 2025 13:07:04 +0800 Quanmin Yan <yanquanmin1@...wei.com> wrote:
>
>> After introducing ctx->addr_unit, the unit of sz might not
>> be in bytes. However, sz_applied is returned in bytes after
>> processing by paddr.
> This is not an intended behavior, but a bug of my code.  Let's update patches
> 3-6 of this series to return sz_applied as core-layer address unit, instead of
> bytes.
>
>> To maintain external consistency, sz
>> is converted to byte units when updating the state.
> Users could keep the consistency by multiplying the addr_unit, which they set
> themselves.

Thanks for the clarification! this patch has been dropped from the v2 series.

Thanks,
Quanmin Yan