linux-kernel - Re: [PATCH v2 1/2] fault-inject: Restore support for task-independent fault injection

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Message-ID: <1503509459.2484.13.camel@wdc.com>
Date:   Wed, 23 Aug 2017 17:31:00 +0000
From:   Bart Van Assche <Bart.VanAssche@....com>
To:     "akinobu.mita@...il.com" <akinobu.mita@...il.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "dvyukov@...gle.com" <dvyukov@...gle.com>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "mhocko@...nel.org" <mhocko@...nel.org>
Subject: Re: [PATCH v2 1/2] fault-inject: Restore support for task-independent
 fault injection

On Wed, 2017-08-23 at 09:10 +0900, Akinobu Mita wrote:
> 2017-08-23 8:00 GMT+09:00 Bart Van Assche <bart.vanassche@....com>:
> > Certain faults should be injected independent of the context
> > in which these occur. Commit e41d58185f14 made it impossible to
> > inject faults independent of their context. Restore support for
> > task-independent fault injection by adding the attribute 'global'.
> 
> There was a the problem reported by fail-make-request user and the
> problem is introduced by the follow-up patches for systematic
> fault injection.
> 
> Please check the commit 9eeb52ae712e ("fault-inject: fix wrong
> should_fail() decision in task context") and see if the problem
> you reported is identical to the commit.

Hello Akinobu,

Since I was using the block layer for-next branch as the basis of my tests,
commit 9eeb52ae712e was not present in the kernel tree used in my tests.
However, with that commit 9eeb52ae712e applied I don't need my two patches
anymore to inject block layer timeout faults successfully. So I'm fine with
dropping my two patches.

Sorry for the noise.

Bart.