From 1d17e6386c8e6a896c33ded4e109122e45fbfa5e Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Thu, 2 Feb 2012 19:24:05 +0000
Subject: [PATCH] fcst: Follow-up for r4106 - make fcst build again on kernel
 3.0 and before

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@4107 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 fcst/ft_sess.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/fcst/ft_sess.c b/fcst/ft_sess.c
index b506c463a..3f61e31b0 100644
--- a/fcst/ft_sess.c
+++ b/fcst/ft_sess.c
@@ -78,6 +78,18 @@ static struct ft_tport *ft_tport_create(struct fc_lport *lport)
 	return tport;
 }
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 0)
+/*
+ * Free tport via RCU.
+ */
+static void ft_tport_rcu_free(struct rcu_head *rcu)
+{
+	struct ft_tport *tport = container_of(rcu, struct ft_tport, rcu);
+
+	kfree(tport);
+}
+#endif
+
 /*
  * Delete target local port, if any, associated with the local port.
  * Caller holds ft_lport_lock.
@@ -95,7 +107,11 @@ static void ft_tport_delete(struct ft_tport *tport)
 	BUG_ON(tport != lport->prov[FC_TYPE_FCP]);
 	rcu_assign_pointer(lport->prov[FC_TYPE_FCP], NULL);
 	tport->lport = NULL;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 0)
+	call_rcu(&tport->rcu, ft_tport_rcu_free);
+#else
 	kfree_rcu(tport, rcu);
+#endif
 	ft_tport_count--;
 }