linux-kernel - Re: [PATCH 16/23] md/md-llbitmap: implement bit state machine

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Message-ID: <CALTww29r76X9C2-AEVGLqQ=BaWba8yrCCLcwkwVdO9ZhpkvWvA@mail.gmail.com>
Date: Tue, 1 Jul 2025 10:31:56 +0800
From: Xiao Ni <xni@...hat.com>
To: Yu Kuai <yukuai1@...weicloud.com>
Cc: hch@....de, colyli@...nel.org, song@...nel.org, linux-doc@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-raid@...r.kernel.org, yi.zhang@...wei.com, 
	yangerkun@...wei.com, johnny.chenyi@...wei.com, 
	"yukuai (C)" <yukuai3@...wei.com>
Subject: Re: [PATCH 16/23] md/md-llbitmap: implement bit state machine

On Tue, Jul 1, 2025 at 10:03 AM Yu Kuai <yukuai1@...weicloud.com> wrote:
>
> Hi,
>
> 在 2025/07/01 9:55, Xiao Ni 写道:
> > If there is a filesystem and the write io returns. The discard must
> > see the memory changes without any memory barrier apis?
>
> It's the filesystem itself should manage free blocks, and gurantee
> discard can only be issued to free blocks that is not used at all.

Hi Kuai

Thanks for all the explanations and your patience.

Regards
Xiao
>
> Thanks,
> Kuai
>