From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Tue, 2 Oct 2012 00:23:22 +0000 (-0700)
Subject: target: Add target_submit_cmd_map_sgls for SGL fabric memory passthrough
X-Git-Tag: v3.7-rc1~61^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a026757ff56365b4aa3875c14f1bd5733e0e8bb2;p=pandora-kernel.git

target: Add target_submit_cmd_map_sgls for SGL fabric memory passthrough

This patch adds a new target_submit_cmd_map_sgls() to pass pre-allocated
SGL memory using transport_generic_map_mem_to_cmd() logic into the generic
target submit I/O codepath.

It also adds a target_submit_cmd() wrapper around target_submit_cmd_map_sgls()
for existing fabric code that already assumes internal target-core SGL memory
allocation.

(v2: Rename to target_submit_cmd_map_sgls + drop TARGET_SCF_MAP_MEM flag
     in favor of non zero sgl_count check)

Reported-by: Christoph Hellwig <hch@lst.de>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---

Reading git-diff-tree failed