From: Christoph Hellwig <hch@infradead.org>
To: Jan Kara <jack@suse.cz>
Cc: Julian Sun <sunjunchao@bytedance.com>,
Christoph Hellwig <hch@infradead.org>,
linux-block@vger.kernel.org, cgroups@vger.kernel.org,
linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
axboe@kernel.dk, hannes@cmpxchg.org, mhocko@kernel.org,
roman.gushchin@linux.dev, shakeel.butt@linux.dev,
muchun.song@linux.dev, willy@infradead.org, tj@kernel.org,
akpm@linux-foundation.org, Boris Burkov <boris@bur.io>
Subject: Re: [PATCH v9 1/3] block: introduce bdev_flush_by_dev()
Date: Thu, 8 Oct 2026 02:39:43 -0700 [thread overview]
Message-ID: <asdk330xyUL8xDyR@infradead.org> (raw)
In-Reply-To: <dzq3d5yosbsdeml4fdb3rpowxxnjau6edluw4xoewwwbv4hykg@ywkjm3xlbimv>
On Thu, Oct 08, 2026 at 10:51:08AM +0200, Jan Kara wrote:
> In principle, the mechanism looks good to me but I'd place it in
> fs_bdev_file_open_by_dev() & fs_bdev_file_release() so that all block
> device based filesystems are handled. ext4 is the most used filesystem that
> has this problem with bdev memcg accounting but in principle exactly the
> same problem happens for other filesystems using buffer heads so I'd prefer
> handling it in the generic code instead of fixing them one-by-one as people
> complain...
Yes, this should be in the common code.
next prev parent reply other threads:[~2026-10-08 9:39 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-25 6:44 [PATCH v9 0/3] memcg,writeback: flush foreign bdev mappings separately Julian Sun
2026-09-25 6:44 ` [PATCH v9 1/3] block: introduce bdev_flush_by_dev() Julian Sun
2026-09-25 6:52 ` Christoph Hellwig
2026-09-25 10:34 ` Jan Kara
2026-09-28 6:24 ` Christoph Hellwig
2026-09-28 9:51 ` Julian Sun
2026-10-02 11:10 ` Jan Kara
2026-10-05 8:26 ` Christoph Hellwig
2026-10-05 16:25 ` Jan Kara
2026-10-08 8:00 ` Julian Sun
2026-10-08 8:51 ` Jan Kara
2026-10-08 9:39 ` Christoph Hellwig [this message]
2026-10-02 9:23 ` Julian Sun
2026-10-05 8:27 ` Christoph Hellwig
2026-09-25 6:44 ` [PATCH v9 2/3] memcg,writeback: flush foreign bdev mappings separately from owner wbs Julian Sun
2026-09-25 6:55 ` Christoph Hellwig
2026-09-25 13:00 ` Julian Sun
2026-09-28 6:18 ` Christoph Hellwig
2026-09-25 6:44 ` [PATCH v9 3/3] writeback: add tracepoints for foreign bdev writeback Julian Sun
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=asdk330xyUL8xDyR@infradead.org \
--to=hch@infradead.org \
--cc=akpm@linux-foundation.org \
--cc=axboe@kernel.dk \
--cc=boris@bur.io \
--cc=cgroups@vger.kernel.org \
--cc=hannes@cmpxchg.org \
--cc=jack@suse.cz \
--cc=linux-block@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mhocko@kernel.org \
--cc=muchun.song@linux.dev \
--cc=roman.gushchin@linux.dev \
--cc=shakeel.butt@linux.dev \
--cc=sunjunchao@bytedance.com \
--cc=tj@kernel.org \
--cc=willy@infradead.org \
/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