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authorEvgeniy Polyakov <johnpol@2ka.mipt.ru>2007-12-10 23:03:43 +0300
committerGreg Kroah-Hartman <gregkh@suse.de>2008-01-24 20:40:05 -0800
commit41ca28ab2abd76dc203e2c3a7cd609607cb927c3 (patch)
tree9197e7582b4654796914090026e1afed2628d101 /lib/kref.c
parent775b64d2b6ca37697de925f70799c710aab5849a (diff)
downloadlinux-linaro-stable-41ca28ab2abd76dc203e2c3a7cd609607cb927c3.tar.gz
kref: add kref_set()
This adds kref_set() to the kref api for future use by people who really know what they are doing with krefs... From: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'lib/kref.c')
-rw-r--r--lib/kref.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/lib/kref.c b/lib/kref.c
index a6dc3ec328e0..9ecd6e865610 100644
--- a/lib/kref.c
+++ b/lib/kref.c
@@ -15,13 +15,23 @@
#include <linux/module.h>
/**
+ * kref_set - initialize object and set refcount to requested number.
+ * @kref: object in question.
+ * @num: initial reference counter
+ */
+void kref_set(struct kref *kref, int num)
+{
+ atomic_set(&kref->refcount, num);
+ smp_mb();
+}
+
+/**
* kref_init - initialize object.
* @kref: object in question.
*/
void kref_init(struct kref *kref)
{
- atomic_set(&kref->refcount,1);
- smp_mb();
+ kref_set(kref, 1);
}
/**
@@ -61,6 +71,7 @@ int kref_put(struct kref *kref, void (*release)(struct kref *kref))
return 0;
}
+EXPORT_SYMBOL(kref_set);
EXPORT_SYMBOL(kref_init);
EXPORT_SYMBOL(kref_get);
EXPORT_SYMBOL(kref_put);