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Message-ID: <20140527173306.GA12201@redhat.com> Date: Tue, 27 May 2014 13:33:06 -0400 From: Mike Snitzer <snitzer@...hat.com> To: Mikulas Patocka <mpatocka@...hat.com> Cc: Jens Axboe <axboe@...nel.dk>, Kent Overstreet <kmo@...erainc.com>, linux-kernel@...r.kernel.org, dm-devel@...hat.com, "Alasdair G. Kergon" <agk@...hat.com> Subject: Re: block: flush queued bios when the process blocks On Tue, May 27 2014 at 12:26pm -0400, Mikulas Patocka <mpatocka@...hat.com> wrote: > On Tue, 27 May 2014, Jens Axboe wrote: > > > On 2014-05-27 09:23, Mikulas Patocka wrote: > > > > > The patch adds bio list flushing to the scheduler just besides plug > > > flushsing. > > > > ... which is exactly why I'm commenting. It'd be great to avoid yet one more > > scheduler hook for this sort of thing. > > > > -- > > Jens Axboe > > One could create something like schedule notifier chain, but I'm not sure > if it is worth the complexity because of just two users. If more users > come in the future, it could be generalized. It could be that Jens is suggesting updating blk_needs_flush_plug() and blk_schedule_flush_plug() to be bio_list aware too (rather than train sched_submit_work() from this new bio_list)? Somewhat awkward, but _could_ be made to work. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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