Re: [PATCH] Change synchronize_rcu() in scsi_device_quiesce() into synchronize_sched()

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Hi Bart.

Bart Van Assche - 16.03.18, 22:51:
> On 03/16/18 14:42, Martin Steigerwald wrote:
> > What is this one about?
> > 
> > Fix for the regression I (and others?) reported?¹
> > 
> > [1] [Bug 199077] [Possible REGRESSION, 4.16-rc4] Error updating SMART data
> > during runtime and boot failures with blk_mq_terminate_expired in
> > backtrace
> > 
> > https://bugzilla.kernel.org/show_bug.cgi?id=199077
[…]
> This patch is a fix for the fix for the bug that you and others had
> reported. See also "I/O hangs after resuming from suspend-to-ram"
> (https://marc.info/?l=linux-block&m=150340235201348).
> 
> This patch fixes an API violation. For those users for which suspend and
> resume works fine with commit 3a0a529971ec applied it should still work
> fine with this patch applied since this patch may cause
> scsi_device_quiesce() to wait longer.

Okay, so if I understand you correctly, this is not related to the regression 
I mentioned above.

Testing anyway.

Thanks,
-- 
Martin



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