Re: [PATCH] block: add missing block_bio_complete() tracepoint

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On Mon, Jan 30, 2012 at 11:22:29AM +0900, Namhyung Kim wrote:
> >It's just that this patch as it stands will break the existing tools
> >and is likely to cause some amount of head scratching for blktrace
> >users upgrading to new kernel with existing userland, so yeah, I think
> >it should be filtered in kernel from blktrace.c.
> Will it break blktrace? Looking at the code, not tested though, it
> will just add one more 'C' line for bounced bio, and that's it? The
> blktrace will get way more 'C' lines for normal request based
> devices and it needs to be handled anyway. Am I missing something?

Hmmm... maybe I'm confused.  Wouldn't it cause duplicate completions
for all rq based drivers too?


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