[PATCH 1/9] Change the idr structure

[Nadia.Derbey@bull.net]

[-- Attachment #1: idr_add_rcu_head.patch --]
[-- Type: text/plain, Size: 922 bytes --]

[PATCH 01/09]

This patch adds an rcu_head to the idr_layer structure in order to free it
after a grace period.

Signed-off-by: Nadia Derbey <Nadia.Derbey@bull.net>

---
 include/linux/idr.h |    2 ++
 1 file changed, 2 insertions(+)

Index: linux-2.6.25-mm1/include/linux/idr.h
===================================================================
--- linux-2.6.25-mm1.orig/include/linux/idr.h	2008-05-06 17:14:24.000000000 +0200
+++ linux-2.6.25-mm1/include/linux/idr.h	2008-05-06 17:20:58.000000000 +0200
@@ -15,6 +15,7 @@
 #include <linux/types.h>
 #include <linux/bitops.h>
 #include <linux/init.h>
+#include <linux/rcupdate.h>
 
 #if BITS_PER_LONG == 32
 # define IDR_BITS 5
@@ -51,6 +52,7 @@ struct idr_layer {
 	unsigned long		 bitmap; /* A zero bit means "space here" */
 	struct idr_layer	*ary[1<<IDR_BITS];
 	int			 count;	 /* When zero, we can release it */
+	struct rcu_head		 rcu_head;
 };
 
 struct idr {

--