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

From: Tejun Heo
Date: Sun Feb 28 2016 - 16:53:10 EST

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.