linux-kernel - Re: [PATCH 0/3] md/raid10: record rdev/replacement in r10bio

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Message-ID: <5c6ff37b-4285-f62a-c910-67401b0b9c1f@huaweicloud.com>
Date:   Thu, 15 Jun 2023 11:31:17 +0800
From:   Yu Kuai <yukuai1@...weicloud.com>
To:     linan666@...weicloud.com, song@...nel.org, neilb@...e.de
Cc:     linux-raid@...r.kernel.org, linux-kernel@...r.kernel.org,
        linan122@...wei.com, yi.zhang@...wei.com, houtao1@...wei.com,
        yangerkun@...wei.com, "yukuai (C)" <yukuai3@...wei.com>
Subject: Re: [PATCH 0/3] md/raid10: record rdev/replacement in r10bio

Hi,

在 2023/06/14 16:47, linan666@...weicloud.com 写道:
> From: Li Nan <linan122@...wei.com>
> 
> Replacement can replace rdev during replacement io pending.
> mirror->rdev/replacement might be changed during io pending. Get rdev from
> it is risky. This patch series record rdev/replacement in r10bio, and get
> rdev from r10bio to fix bugs in normal write. And I want to do
> this for each io type later.

I personally don't like this, do things by half. I'm good with this
approch for raid10, but can you send a new version to use this for all
io?

Thanks,
Kuai
> 
> Li Nan (3):
>    md/raid10: record rdev/replacement in struct r10bio
>    md/raid10: get rdev/replacemenet from r10bio for normal write
>    md/raid10: improve raid10_end_write_request()
> 
>   drivers/md/raid10.c | 96 ++++++++++++++++++++++-----------------------
>   drivers/md/raid10.h | 12 +++---
>   2 files changed, 54 insertions(+), 54 deletions(-)
>