From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Thu, 14 Nov 2013 02:54:45 +0000 (-0800)
Subject: iscsi-target: Convert iscsi_session statistics to atomic_long_t
X-Git-Tag: v3.13-rc1~5^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=04f3b31bff720f01d684100c868c88f67ced8dc8;p=pandora-kernel.git

iscsi-target: Convert iscsi_session statistics to atomic_long_t

This patch converts a handful of iscsi_session statistics to type
atomic_long_t, instead of using iscsi_session->session_stats_lock
when incrementing these values.

More importantly, go ahead and drop the spinlock usage within
iscsit_setup_scsi_cmd(), iscsit_check_dataout_hdr(),
iscsit_send_datain(), and iscsit_build_rsp_pdu() fast-path code.

(Squash in Roland's  target: Remove write-only stats fields and lock
from struct se_node_acl)

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