netdev - Re: [PATCH 03/22] libiscsi: Make use of new the sg

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Message-ID: <85eda3a6-edab-e59e-d2d4-c3af5599d0fd@deltatee.com>
Date:   Fri, 14 Apr 2017 09:37:20 -0600
From:   Logan Gunthorpe <logang@...tatee.com>
To:     Christoph Hellwig <hch@....de>
Cc:     "Martin K. Petersen" <martin.petersen@...cle.com>,
        Sagi Grimberg <sagi@...mberg.me>, Jens Axboe <axboe@...nel.dk>,
        Tejun Heo <tj@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Ross Zwisler <ross.zwisler@...ux.intel.com>,
        Matthew Wilcox <mawilcox@...rosoft.com>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Ming Lin <ming.l@....samsung.com>,
        linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org,
        linux-media@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linaro-mm-sig@...ts.linaro.org, intel-gfx@...ts.freedesktop.org,
        linux-raid@...r.kernel.org, linux-mmc@...r.kernel.org,
        linux-nvme@...ts.infradead.org, linux-nvdimm@...ts.01.org,
        linux-scsi@...r.kernel.org, fcoe-devel@...n-fcoe.org,
        open-iscsi@...glegroups.com, megaraidlinux.pdl@...adcom.com,
        sparmaintainer@...sys.com, devel@...verdev.osuosl.org,
        target-devel@...r.kernel.org, netdev@...r.kernel.org,
        linux-rdma@...r.kernel.org, rds-devel@....oracle.com,
        Steve Wise <swise@...ngridcomputing.com>,
        Stephen Bates <sbates@...thlin.com>
Subject: Re: [PATCH 03/22] libiscsi: Make use of new the sg_map helper
 function



On 14/04/17 02:36 AM, Christoph Hellwig wrote:
> On Thu, Apr 13, 2017 at 04:05:16PM -0600, Logan Gunthorpe wrote:
>> Convert the kmap and kmap_atomic uses to the sg_map function. We now
>> store the flags for the kmap instead of a boolean to indicate
>> atomicitiy. We also propogate a possible kmap error down and create
>> a new ISCSI_TCP_INTERNAL_ERR error type for this.
> 
> Can you split out the new error handling into a separate prep patch
> which should go to the iscsi maintainers ASAP?
> 

Yes, I can do that. I'd just have thought they'd want to see the use
case for the new error before accepting a patch like that...

Logan