From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Sat, 4 Jun 2011 03:59:19 +0000 (-0700)
Subject: target: Add transport_handle_cdb_direct optimization
X-Git-Tag: v3.1-rc1~305^2~24
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=695434e1cbd57f404110bf4ab187a5127ffd79bb;p=pandora-kernel.git

target: Add transport_handle_cdb_direct optimization

This patch adds a transport_handle_cdb_direct() optimization for mapping
and queueing tasks directly from within fabric processing context by calling
the newly exported transport_generic_new_cmd().  This currently expects to
be called from process context only, and will fail if called within interrupt
context.

This patch also leaves transport_generic_handle_cdb() unmodified for the
moment to function as expected with existing tcm_fc and ib_srpt fabrics,
and will be removed once these have been converted and tested with v4.1
code using transport_handle_cdb_direct().

Based on Andy's original patch here:

[PATCH 39/42] target: Call transport_new_cmd instead of adding to cmd queue

Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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