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Message-ID: <ZvWJiyEREyfZN-NW@slm.duckdns.org>
Date: Thu, 26 Sep 2024 06:19:23 -1000
From: Tejun Heo <tj@...nel.org>
To: "Pankaj Raghav (Samsung)" <kernel@...kajraghav.com>
Cc: Theodore Ts'o <tytso@....edu>, Chao Yu <chao@...nel.org>,
Jonathan Corbet <corbet@....net>, willy@...radead.org,
Josef Bacik <josef@...icpanda.com>,
Johannes Weiner <hannes@...xchg.org>,
Michal Koutný <mkoutny@...e.com>,
Alexander Viro <viro@...iv.linux.org.uk>,
"Darrick J . Wong" <djwong@...nel.org>,
Zefan Li <lizefan.x@...edance.com>, akpm@...ux-foundation.org,
Christian Brauner <brauner@...nel.org>,
Andreas Dilger <adilger.kernel@...ger.ca>,
Jaegeuk Kim <jaegeuk@...nel.org>, Jan Kara <jack@...e.cz>,
Chris Mason <clm@...com>, David Sterba <dsterba@...e.com>,
cgroups@...r.kernel.org, linux-btrfs@...r.kernel.org,
linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net,
linux-fsdevel@...r.kernel.org, mcgrof@...nel.org,
gost.dev@...sung.com, linux-doc@...r.kernel.org,
linux-xfs@...r.kernel.org, Pankaj Raghav <p.raghav@...sung.com>
Subject: Re: [PATCH] fs/writeback: convert wbc_account_cgroup_owner to take a
folio
On Thu, Sep 26, 2024 at 04:01:21PM +0200, Pankaj Raghav (Samsung) wrote:
> From: Pankaj Raghav <p.raghav@...sung.com>
>
> Most of the callers of wbc_account_cgroup_owner() are converting a folio
> to page before calling the function. wbc_account_cgroup_owner() is
> converting the page back to a folio to call mem_cgroup_css_from_folio().
>
> Convert wbc_account_cgroup_owner() to take a folio instead of a page,
> and convert all callers to pass a folio directly except f2fs.
>
> Convert the page to folio for all the callers from f2fs as they were the
> only callers calling wbc_account_cgroup_owner() with a page. As f2fs is
> already in the process of converting to folios, these call sites might
> also soon be calling wbc_account_cgroup_owner() with a folio directly in
> the future.
>
> No functional changes. Only compile tested.
>
> Signed-off-by: Pankaj Raghav <p.raghav@...sung.com>
>From cgroup writeback POV:
Acked-by: Tejun Heo <tj@...nel.org>
Thanks.
--
tejun
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