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Commit 41ca28ab authored by Evgeniy Polyakov's avatar Evgeniy Polyakov Committed by Greg Kroah-Hartman
Browse files

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: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 775b64d2

include/linux/kref.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -24,6 +24,7 @@ struct kref { 
	atomic_t refcount;

	atomic_t refcount;

};

};





void kref_set(struct kref *kref, int num);

void kref_init(struct kref *kref);

void kref_init(struct kref *kref);

void kref_get(struct kref *kref);

void kref_get(struct kref *kref);

int kref_put(struct kref *kref, void (*release) (struct kref *kref));

int kref_put(struct kref *kref, void (*release) (struct kref *kref));

lib/kref.c

+13 −2
Original line number Original line Diff line number Diff line
@@ -14,14 +14,24 @@ 
#include <linux/kref.h>

#include <linux/kref.h>

#include <linux/module.h>

#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_init - initialize object.

 * @kref: object in question.

 * @kref: object in question.

 */

 */

void kref_init(struct kref *kref)

void kref_init(struct kref *kref)

{

{

	atomic_set(&kref->refcount,1);

	kref_set(kref, 1);

	smp_mb();

}

}





/**

/**
@@ -61,6 +71,7 @@ int kref_put(struct kref *kref, void (*release)(struct kref *kref)) 
	return 0;

	return 0;

}

}





EXPORT_SYMBOL(kref_set);

EXPORT_SYMBOL(kref_init);

EXPORT_SYMBOL(kref_init);

EXPORT_SYMBOL(kref_get);

EXPORT_SYMBOL(kref_get);

EXPORT_SYMBOL(kref_put);
 
EXPORT_SYMBOL(kref_put);