linux-kernel - Re: [PATCH block/for-4.5-fixes] writeback: keep superblock pinned during cgroup writeback association switches

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Message-ID: <20160228215300.GU3965@htj.duckdns.org>
Date:	Sun, 28 Feb 2016 16:53:00 -0500
From:	Tejun Heo <tj@...nel.org>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	Jan Kara <jack@...e.cz>, Tahsin Erdogan <tahsin@...gle.com>,
	Jens Axboe <axboe@...nel.dk>, cgroups@...r.kernel.org,
	Theodore Ts'o <tytso@....edu>,
	Nauman Rafique <nauman@...gle.com>,
	linux-kernel@...r.kernel.org, Jan Kara <jack@...e.com>
Subject: Re: [PATCH block/for-4.5-fixes] writeback: keep superblock pinned
 during cgroup writeback association switches

Hello, Al.

On Fri, Feb 19, 2016 at 10:26:09PM +0000, Al Viro wrote:
> Is that code OK with e.g. running in parallel with remounting filesystem r/o?

AFAICS, yeah.  It doesn't care about the sb or filesystem at all.  All
it touches is generic inodes and their pages.

Thanks.

-- 
tejun