linux-kernel - Re: [PATCH v5 01/11] block: make generic_make

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Message-ID: <1439326568.19144.11.camel@ssi>
Date:	Tue, 11 Aug 2015 13:56:08 -0700
From:	Ming Lin <mlin@...nel.org>
To:	"Martin K. Petersen" <martin.petersen@...cle.com>
Cc:	Kent Overstreet <kent.overstreet@...il.com>,
	Mike Snitzer <snitzer@...hat.com>, axboe@...com,
	Christoph Hellwig <hch@...radead.org>,
	device-mapper development <dm-devel@...hat.com>,
	Ming Lei <ming.lei@...onical.com>,
	Christoph Hellwig <hch@....de>,
	Alasdair Kergon <agk@...hat.com>,
	Lars Ellenberg <drbd-dev@...ts.linbit.com>,
	Philip Kelleher <pjk1939@...ux.vnet.ibm.com>,
	Nitin Gupta <ngupta@...are.org>,
	Ming Lin <ming.l@....samsung.com>,
	Oleg Drokin <oleg.drokin@...el.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	Jens Axboe <axboe@...nel.dk>,
	Andreas Dilger <andreas.dilger@...el.com>,
	Geoff Levand <geoff@...radead.org>,
	Jiri Kosina <jkosina@...e.cz>,
	lkml <linux-kernel@...r.kernel.org>, Jim Paris <jim@...n.com>,
	Minchan Kim <minchan@...nel.org>,
	Dongsu Park <dpark@...teo.net>, drbd-user@...ts.linbit.com,
	Joe Thornber <ejt@...hat.com>
Subject: Re: [PATCH v5 01/11] block: make generic_make_request handle
 arbitrarily sized bios

On Tue, 2015-08-11 at 14:05 -0400, Martin K. Petersen wrote:
> >>>>> "Martin" == Martin K Petersen <martin.petersen@...cle.com> writes:
> 
> Martin> I agree except I really don't want to lop off anything unless
> Martin> the device locks up if we send it partial blocks. There was an
> Martin> array that had problems a while back but I believe they have
> Martin> been fixed.
> 
> Oh, and there are several arrays out there that have allocation units
> that are not powers of two. *sigh*

Do you still agree we cap discard to 2G as an interim solution?
https://git.kernel.org/cgit/linux/kernel/git/mlin/linux.git/commit/?h=block-generic-req&id=39d2f5f

If OK, I'll send out new version asking Jens to apply.


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