linux-kernel - Re: [dm-devel] [PATCH 0/15] copy offload patches

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 11 Dec 2015 11:55:09 -0800
From:	Christoph Hellwig <hch@...radead.org>
To:	Mike Christie <michaelc@...wisc.edu>
Cc:	device-mapper development <dm-devel@...hat.com>,
	Mikulas Patocka <mpatocka@...hat.com>,
	Jens Axboe <axboe@...nel.dk>,
	Mike Snitzer <msnitzer@...hat.com>, linux-scsi@...r.kernel.org,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	"James E.J. Bottomley" <JBottomley@...n.com>,
	linux-kernel@...r.kernel.org, linux-block@...r.kernel.org
Subject: Re: [dm-devel] [PATCH 0/15] copy offload patches

On Thu, Dec 10, 2015 at 11:06:04PM -0600, Mike Christie wrote:
> 
> 2. Start REQ_OP_READ off at non-zero to try and shake out code that was
> not converted.
> 
> There are a several places where we assume reads are zero and writes are
> 1 for things like indexing in arrays (like blktrace's ddir_act or dm
> starts), passing into block functions (like nvme_alloc_request's call of
> blk_mq_alloc_request), and if/else's. I am not done fixing all of them
> and testing.

If this turns out to be too painful we should just skip it.  I though it
would be a nie debugging aid, but we don't need to do it at any cost.
--
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/