linux-kernel - Re: (resend) [PATCH [linux-4.14.y]] dm cache: submit writethrough writes in parallel to origin and cache

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Message-ID: <20200727203025.GA28830@redhat.com>
Date:   Mon, 27 Jul 2020 16:30:26 -0400
From:   Mike Snitzer <snitzer@...hat.com>
To:     Sasha Levin <sashal@...nel.org>
Cc:     John Donnelly <john.p.donnelly@...cle.com>, stable@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: (resend) [PATCH [linux-4.14.y]] dm cache: submit writethrough
 writes in parallel to origin and cache

On Mon, Jul 27 2020 at  4:17pm -0400,
Sasha Levin <sashal@...nel.org> wrote:

> On Mon, Jul 27, 2020 at 02:38:52PM -0500, John Donnelly wrote:
> >
> >
> >>On Jul 27, 2020, at 2:18 PM, Sasha Levin <sashal@...nel.org> wrote:
> >>
> >>On Mon, Jul 27, 2020 at 11:00:14AM -0400, Mike Snitzer wrote:
> >>>This mail needs to be saent to stable@...r.kernel.org (now cc'd).
> >>>
> >>>Greg et al: please backport 2df3bae9a6543e90042291707b8db0cbfbae9ee9
> >>
> >>Hm, what's the issue that this patch addresses? It's not clear from the
> >>commit message.
> >>
> >>--
> >>Thanks,
> >>Sasha
> >
> >HI Sasha ,
> >
> >In an off-line conversation I had with Mike , he indicated that :
> >
> >
> >commit 1b17159e52bb31f982f82a6278acd7fab1d3f67b
> >Author: Mike Snitzer <snitzer@...hat.com>
> >Date:   Fri Feb 28 18:00:53 2020 -0500
> >
> >  dm bio record: save/restore bi_end_io and bi_integrity
> >
> >
> >commit 248aa2645aa7fc9175d1107c2593cc90d4af5a4e
> >Author: Mike Snitzer <snitzer@...hat.com>
> >Date:   Fri Feb 28 18:11:53 2020 -0500
> >
> >  dm integrity: use dm_bio_record and dm_bio_restore
> >
> >
> >Were picked up  in  "stable" kernels picked up even though
> >neither was marked for stable@...r.kernel.org
> >
> >Adding this missing  commit :
> >
> >2df3bae9a6543e90042291707b8db0cbfbae9ee9
> >
> >
> >Completes the series
> 
> Should we just revert those two commits instead if they're not needed?

I'd be fine with that, exceept I haven't looked to see whether any
other stable commits conflict with reverting them.

But you have my blessing to give it a shot ;)

Mike