From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
Subject: Re: [patch] nd_blk,nd_pmem,nd_btt: add endio blktrace events
Date: Wed, 9 Nov 2016 11:17:15 -0800
Message-ID: <20161109191715.GA20314@infradead.org>
References: <x49twbgo4i6.fsf@segfault.boston.devel.redhat.com>
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On Wed, Nov 09, 2016 at 02:08:33PM -0500, Jeff Moyer wrote:
> Right now, any of the above three drivers will report Q events in
> blktrace but no corresponding C events.  Fix it.

It seems like that trace point should simply go into bio_endio
and be removed from any existing callsite.