Messages in this thread | | | From | "Bean Huo (beanhuo)" <> | Subject | RE: [EXT] [PATCH v4 3/3] scsi: ufs-bsg: Allow reading descriptors | Date | Thu, 31 Jan 2019 10:27:01 +0000 |
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>-----Original Message----- >From: linux-scsi-owner@vger.kernel.org [mailto:linux-scsi- >owner@vger.kernel.org] On Behalf Of Avri Altman >Sent: Sunday, January 27, 2019 8:08 AM >To: James E.J. Bottomley <jejb@linux.vnet.ibm.com>; Martin K. Petersen ><martin.petersen@oracle.com>; linux-scsi@vger.kernel.org; linux- >kernel@vger.kernel.org; Evan Green <evgreen@chromium.org> >Cc: Avi Shchislowski <avi.shchislowski@wdc.com>; Alex Lemberg ><alex.lemberg@wdc.com>; Avri Altman <avri.altman@wdc.com> >Subject: [EXT] [PATCH v4 3/3] scsi: ufs-bsg: Allow reading descriptors > >Add this functionality, placing the descriptor being read in the actual data buffer >in the bio. > >That is, for both read and write descriptors query upiu, we are using the job's >request_payload. This in turn, is mapped back in user land to the applicable >sg_io_v4 xferp: dout_xferp for write descriptor, and din_xferp for read descriptor. > >Signed-off-by: Avri Altman <avri.altman@wdc.com> Reviewed-by: Bean Huo <beanhuo@micron.com>
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