From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Wed, 2 Apr 2014 21:20:37 +0000 (-0700)
Subject: target: Enable WRITE_INSERT emulation in target_execute_cmd
X-Git-Tag: v3.15-rc1~12^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a84bf9eedb550e38376008f32fcf0610867d3067;p=pandora-kernel.git

target: Enable WRITE_INSERT emulation in target_execute_cmd

This patch enables WRITE_INSERT emulation in target_execute_cmd()
in order to locally generate DIF PI before submitting the WRITE
to the underlying backend device.

This is required for fabric drivers that currently don't support
DIF over-the-wire, in order to inact with backend devices that
have hardware (IBLOCK) or software (FILEIO + RAMDISK) support
for handling T10 PI.

v2 changes:
   - Convert to sbc_dif_generate() usage (Sagi)

Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: Quinn Tran <quinn.tran@qlogic.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---

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