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From: John Donnelly <john.p.donnelly@oracle.com>
To: Sasha Levin <sashal@kernel.org>
Cc: Mike Snitzer <snitzer@redhat.com>,
	stable@vger.kernel.org,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: (resend) [PATCH [linux-4.14.y]] dm cache: submit writethrough writes in parallel to origin and cache
Date: Mon, 27 Jul 2020 15:38:38 -0500	[thread overview]
Message-ID: <6F764B9B-DEE6-4060-9F11-050D2F0999ED@oracle.com> (raw)
In-Reply-To: <20200727201700.GJ406581@sasha-vm>



> On Jul 27, 2020, at 3:17 PM, Sasha Levin <sashal@kernel.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@kernel.org> wrote:
>>> 
>>> On Mon, Jul 27, 2020 at 11:00:14AM -0400, Mike Snitzer wrote:
>>>> This mail needs to be saent to stable@vger.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@redhat.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@redhat.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@vger.kernel.org
>> 
>> Adding this missing  commit :
>> 
>> 2df3bae9a6543e90042291707b8db0cbfbae9ee9
>> 
>> 
>> Completes the series
> 
> Should we just revert those two commits instead if they're not needed?
> 
> -- 
> Thanks,
> Sasha

  As I stated above:

> Fixes: 705559706d62038b74c5088114c1799cf2c9dce8 (dm bio record:
> save/restore bi_end_io and bi_integrity, version 4.14.188)
> 
> 70555970 introduced a mkfs.ext4 hang on a LVM device that has been
> modified with lvconvert --cachemode=writethrough.

  It corrects an issue we discovered in 4.14.188 .    Any other branches those two commits have migrated to will likely have the same regression. 

I am confident linux-4.14.y will  be better off with it ;-) 





  parent reply	other threads:[~2020-07-27 20:40 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <37c5a615-655d-c106-afd0-54e03f3c0eef@oracle.com>
2020-07-27 15:00 ` (resend) [PATCH [linux-4.14.y]] dm cache: submit writethrough writes in parallel to origin and cache Mike Snitzer
2020-07-27 19:18   ` Sasha Levin
2020-07-27 19:38     ` John Donnelly
2020-07-27 20:17       ` Sasha Levin
2020-07-27 20:30         ` Mike Snitzer
2020-07-27 20:38         ` John Donnelly [this message]
2020-07-29 11:51   ` Greg KH
2020-07-29 11:55     ` Greg KH
2020-07-29 14:16       ` Mike Snitzer
2020-07-29 23:45         ` John Donnelly
2020-07-30  5:21           ` Greg KH
2020-07-30 14:40             ` John Donnelly
2020-07-31  6:36               ` Greg KH

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