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Date: Sat, 19 May 2012 01:59:32 +0100 From: Alasdair G Kergon <agk@...hat.com> To: Tejun Heo <tj@...nel.org> Cc: koverstreet@...gle.com, axboe@...nel.dk, dm-devel@...hat.com, linux-kernel@...r.kernel.org, linux-bcache@...r.kernel.org, linux-fsdevel@...r.kernel.org, agk@...hat.com Subject: Re: [dm-devel] [PATCH 12/13] Make generic_make_request handle arbitrarily large bios On Fri, May 18, 2012 at 10:52:16AM -0700, Tejun Heo wrote: > Does this by any chance allow killing ->merge_bvec_fn()? merge_bvec also has an impact on efficiency. Why create a too-large bio in the first place if it's only going to have to get split up again? If a change like this goes in, the various trade-offs should be re-examined. Alasdair -- 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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