From: Christoph Hellwig <hch@infradead.org>
To: John Garry <john.g.garry@oracle.com>
Cc: Christoph Hellwig <hch@infradead.org>,
anthony <antmbox@youngman.org.uk>,
Yu Kuai <yukuai1@huaweicloud.com>,
colyli@kernel.org, hare@suse.de, tieren@fnnas.com,
axboe@kernel.dk, tj@kernel.org, josef@toxicpanda.com,
song@kernel.org, akpm@linux-foundation.org, neil@brown.name,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
cgroups@vger.kernel.org, linux-raid@vger.kernel.org,
yi.zhang@huawei.com, yangerkun@huawei.com,
johnny.chenyi@huawei.com, "yukuai (C)" <yukuai3@huawei.com>
Subject: Re: [PATCH RFC 4/7] md/raid10: convert read/write to use bio_submit_split()
Date: Mon, 1 Sep 2025 23:30:53 -0700 [thread overview]
Message-ID: <aLaPHctB8IgtD_Sg@infradead.org> (raw)
In-Reply-To: <def0970e-0bf7-4a6d-9b68-692b40aeecae@oracle.com>
On Tue, Sep 02, 2025 at 07:18:01AM +0100, John Garry wrote:
> BTW, do we realistically expect atomic writes HW support and bad blocks ever
> to meet?
That's the point I'm trying to make. bad block tracking is stupid
with modern hardware. Both SSDs and HDDs are overprovisioned on
physical "blocks", and once they run out fine grained bad block tracking
is not going to help. І really do not understand why md even tries
to do this bad block tracking, but claiming to support atomic writes
while it does is actively harmful.
next prev parent reply other threads:[~2025-09-02 6:31 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-25 9:36 [PATCH RFC 0/7] block: fix disordered IO in the case recursive split Yu Kuai
2025-08-25 9:36 ` [PATCH RFC 1/7] block: export helper bio_submit_split() Yu Kuai
2025-08-25 10:53 ` Christoph Hellwig
2025-08-26 0:51 ` Yu Kuai
2025-08-25 9:36 ` [PATCH RFC 2/7] md/raid0: convert raid0_handle_discard() to use bio_submit_split() Yu Kuai
2025-08-25 10:57 ` Christoph Hellwig
2025-08-26 1:08 ` Yu Kuai
2025-08-26 7:54 ` Christoph Hellwig
2025-08-26 9:11 ` Yu Kuai
2025-08-25 9:36 ` [PATCH RFC 3/7] md/raid1: convert " Yu Kuai
2025-08-25 10:57 ` Christoph Hellwig
2025-08-26 1:09 ` Yu Kuai
2025-08-25 9:36 ` [PATCH RFC 4/7] md/raid10: convert read/write " Yu Kuai
2025-08-25 10:59 ` Christoph Hellwig
2025-08-26 1:13 ` Yu Kuai
2025-08-26 7:55 ` Christoph Hellwig
2025-08-26 9:14 ` Yu Kuai
2025-08-26 17:35 ` anthony
2025-08-27 7:31 ` Christoph Hellwig
2025-09-02 6:18 ` John Garry
2025-09-02 6:30 ` Christoph Hellwig [this message]
2025-09-02 6:58 ` John Garry
2025-09-02 8:25 ` Yu Kuai
2025-09-02 14:46 ` John Garry
2025-08-25 9:36 ` [PATCH RFC 5/7] md/raid5: convert " Yu Kuai
2025-08-25 11:00 ` Christoph Hellwig
2025-08-26 1:15 ` Yu Kuai
2025-08-26 7:56 ` Christoph Hellwig
2025-08-25 9:36 ` [PATCH RFC 6/7] md/md-linear: " Yu Kuai
2025-08-25 9:37 ` [PATCH RFC 7/7] block: fix disordered IO in the case recursive split Yu Kuai
2025-08-25 11:07 ` Christoph Hellwig
2025-08-26 1:20 ` Yu Kuai
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=aLaPHctB8IgtD_Sg@infradead.org \
--to=hch@infradead.org \
--cc=akpm@linux-foundation.org \
--cc=antmbox@youngman.org.uk \
--cc=axboe@kernel.dk \
--cc=cgroups@vger.kernel.org \
--cc=colyli@kernel.org \
--cc=hare@suse.de \
--cc=john.g.garry@oracle.com \
--cc=johnny.chenyi@huawei.com \
--cc=josef@toxicpanda.com \
--cc=linux-block@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-raid@vger.kernel.org \
--cc=neil@brown.name \
--cc=song@kernel.org \
--cc=tieren@fnnas.com \
--cc=tj@kernel.org \
--cc=yangerkun@huawei.com \
--cc=yi.zhang@huawei.com \
--cc=yukuai1@huaweicloud.com \
--cc=yukuai3@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).