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: Wed, 17 Feb 2016 18:02:31 -0500
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To: Tahsin Erdogan <tahsin-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
Cc: Jan Kara <jack-AlSwsSmVLrQ@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>

On Wed, Feb 17, 2016 at 02:41:25PM -0800, Tahsin Erdogan wrote:
> With this patch, I am starting to have issues running fsck immediately
> after umount.
> 
> *** fsck.ext4 output ***
> fsck from util-linux-ng 2.17.2
> e2fsck 1.42.12-gg3 (9-Sep-2014)
> Warning!  /dev/sdb3 is in use.
> Pass 1: Checking inodes, blocks, and sizes
> Deleted inode 62346243 has zero dtime.  Fix? no

Yeah, that'd be one of the side effects.  Will think more about it.
Jan, do you know why we have both s_active and the rwsem at this
point?  I can't tell why both are needed.

Thanks.

-- 
tejun