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Message-ID: <20091006071202.GC5216@kernel.dk> Date: Tue, 6 Oct 2009 09:12:02 +0200 From: Jens Axboe <jens.axboe@...cle.com> To: Corrado Zoccolo <czoccolo@...il.com> Cc: Linux-Kernel <linux-kernel@...r.kernel.org> Subject: Re: bug in elevator/cfq regarding start_time? On Mon, Oct 05 2009, Corrado Zoccolo wrote: > On Mon, Oct 5, 2009 at 5:08 PM, Corrado Zoccolo <czoccolo@...il.com> wrote: > > On Sun, Oct 4, 2009 at 10:59 PM, Jens Axboe <jens.axboe@...cle.com> wrote: > >> Good spotting! So we can either add the same copy in cfq, or we can just > >> move the ->start_time check and assignment in attempt_merge() to post > >> the elv_merge_requests() call. I think the latter would work fine, but > >> I'll check and fix tomorrow. > > > > I think there is still something buggy regarding those timestamps. > False alarm. I just found that the list was not yet filled at that > place in the code. OK, it did look a bit puzzling. FWIW, this is what I committed yesterday: http://git.kernel.dk/?p=linux-2.6-block.git;a=commit;h=30996f40bffe73f05abb92a4cec254befa8cecf7 -- Jens Axboe -- 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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