From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Sat, 10 Mar 2012 22:36:21 +0000 (-0800)
Subject: target: Convert se_node_acl->acl_group removal to use ->acl_kref
X-Git-Tag: v3.4-rc1~146^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=337c060701fb3d27d9945bf7af7ba194ae2153a8;p=pandora-kernel.git

target: Convert se_node_acl->acl_group removal to use ->acl_kref

This patch converts core_tpg_del_initiator_node_acl() shutdown from configfs
context to use se_node_acl->acl_kref and ->acl_free_comp in order to wait for
outstanding fabric callbacks to complete via transport_deregister_session()
callbacks before waking ->acl_free_comp from the last ->acl_kref put.

It also changes core_tpg_del_initiator_node_acl() to setup a local sess_list
with target_get_session() + acl->acl_stop = 1 for active sessions that will
be shutdown, and changes transport_deregister_session_configfs() to check
for ->acl_stop usage.

Cc: Roland Dreier <roland@purestorage.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Joern Engel <joern@logfs.org>
Cc: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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