From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Subject: Re: [PATCH block/for-4.5-fixes] writeback: keep superblock pinned
 during cgroup writeback association switches
Date: Sun, 28 Feb 2016 16:53:00 -0500
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To: Al Viro <viro-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
Cc: Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>, Tahsin Erdogan <tahsin-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>, Jens Axboe <axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Theodore Ts'o <tytso-3s7WtUTddSA@public.gmane.org>, Nauman Rafique <nauman-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Jan Kara <jack-IBi9RG/b67k@public.gmane.org>

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