On Mon, Feb 29, 2016 at 09:06:15PM +0000, Al Viro wrote:

quoted

Hmmm?  The flushing is done after shrink_dcache_for_umount() and
sync_filesystems().  Aren't inodes supposed to stay clean after that?

s/shrink_dcache_for_umount/fsnotify_unmount_inodes/ - sorry.

Is that allowed to dirty indoes and initiate writebacks again, after
sync_filesystems() is done?  That sounds weird but it's trivial to
move cgroup_writeback_umount() below that if so.

Thanks.

-- 
tejun