linux-kernel - Re: [PATCH v2 02/21] libiscsi: Add an internal error code

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Message-ID: <20170426074848.GA8081@lst.de>
Date:   Wed, 26 Apr 2017 09:48:48 +0200
From:   Christoph Hellwig <hch@....de>
To:     Logan Gunthorpe <logang@...tatee.com>
Cc:     linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org,
        linux-media@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        intel-gfx@...ts.freedesktop.org, linux-raid@...r.kernel.org,
        linux-mmc@...r.kernel.org, linux-nvdimm@...ts.01.org,
        linux-scsi@...r.kernel.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,
        dm-devel@...hat.com, Christoph Hellwig <hch@....de>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        Jens Axboe <axboe@...nel.dk>,
        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>,
        Stephen Bates <sbates@...thlin.com>
Subject: Re: [PATCH v2 02/21] libiscsi: Add an internal error code

On Tue, Apr 25, 2017 at 12:20:49PM -0600, Logan Gunthorpe wrote:
> This is a prep patch to add a new error code to libiscsi. We want to
> rework some kmap calls to be able to fail. When we do, we'd like to
> use this error code.

The kmap case in iscsi_tcp_segment_map can already fail.  Please add
handling of that failure to this patch, and we should get it merged
ASAP.