linux-ext4 - Re: [PATCH 06/10] mm,btrfs: add a filemap_fdatawrite_kick

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <74593bac-929b-4496-80e0-43d0f54d6b4c@kernel.org>
Date: Mon, 13 Oct 2025 17:01:01 +0900
From: Damien Le Moal <dlemoal@...nel.org>
To: Christoph Hellwig <hch@....de>,
 "Matthew Wilcox (Oracle)" <willy@...radead.org>,
 Eric Van Hensbergen <ericvh@...nel.org>, Latchesar Ionkov
 <lucho@...kov.net>, Dominique Martinet <asmadeus@...ewreck.org>,
 Christian Schoenebeck <linux_oss@...debyte.com>, Chris Mason <clm@...com>,
 David Sterba <dsterba@...e.com>, Mark Fasheh <mark@...heh.com>,
 Joel Becker <jlbec@...lplan.org>, Joseph Qi <joseph.qi@...ux.alibaba.com>
Cc: Alexander Viro <viro@...iv.linux.org.uk>,
 Christian Brauner <brauner@...nel.org>, Josef Bacik <josef@...icpanda.com>,
 Jan Kara <jack@...e.cz>, linux-block@...r.kernel.org, v9fs@...ts.linux.dev,
 linux-btrfs@...r.kernel.org, linux-ext4@...r.kernel.org,
 linux-fsdevel@...r.kernel.org, jfs-discussion@...ts.sourceforge.net,
 ocfs2-devel@...ts.linux.dev, linux-xfs@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 06/10] mm,btrfs: add a filemap_fdatawrite_kick_nr helper

On 2025/10/13 11:58, Christoph Hellwig wrote:
> Abstract out the btrfs-specific behavior of kicking off I/O on a number
> of pages on an address_space into a well-defined helper.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>

One nit below.

Reviewed-by: Damien Le Moal <dlemoal@...nel.org>


> +/*
> + * Start writeback on @nr_to_write pages from @mapping.  No one but the existing
> + * btrfs caller should be using this.  Talk to linux-mm if you think adding a
> + * new caller is a good idea.
> + */
> +int filemap_fdatawrite_kick_nr(struct address_space *mapping, long *nr_to_write)

Not a huge fan of this name. Maybe filemap_fdatawrite_nrpages() ?


-- 
Damien Le Moal
Western Digital Research