linux-kernel - Re: [PATCH 3.14 000/140] 3.14.5-stable review

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Date:	Thu, 29 May 2014 15:59:23 +1000
From:	NeilBrown <neilb@...e.de>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, linux@...ck-us.net,
	satoru.takeuchi@...il.com, shuah.kh@...sung.com,
	stable@...r.kernel.org
Subject: Re: [PATCH 3.14 000/140] 3.14.5-stable review

On Wed, 28 May 2014 21:32:19 -0700 Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:

> This is the start of the stable review cycle for the 3.14.5 release.
> There are 140 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Sat May 31 04:30:12 UTC 2014.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	kernel.org/pub/linux/kernel/v3.0/stable-review/patch-3.14.5-rc1.gz
> and the diffstat can be found below.
> 

Hi Greg,
I notice that the patch in commit cc13b1d1500656a2 (see below for comment) is
missing. I was hoping it would be in 3.14.5.  Is there a reason I missed out?

Thanks,
NeilBrown


commit cc13b1d1500656a20e41960668f3392dda9fa6e2
Author: NeilBrown <neilb@...e.de>
Date:   Mon May 5 13:34:37 2014 +1000

    md/raid10: call wait_barrier() for each request submitted.
    
    wait_barrier() includes a counter, so we must call it precisely once
    (unless balanced by allow_barrier()) for each request submitted.
    
    Since
    commit 20d0189b1012a37d2533a87fb451f7852f2418d1
        block: Introduce new bio_split()
    in 3.14-rc1, we don't call it for the extra requests generated when
    we need to split a bio.
    
    When this happens the counter goes negative, any resync/recovery will
    never start, and  "mdadm --stop" will hang.
    
    Reported-by: Chris Murphy <lists@...orremedies.com>
    Fixes: 20d0189b1012a37d2533a87fb451f7852f2418d1
    Cc: stable@...r.kernel.org (3.14+)
    Cc: Kent Overstreet <kmo@...erainc.com>
    Signed-off-by: NeilBrown <neilb@...e.de>

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