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locking/atomic, kref: Add KREF_INIT()

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Since we need to change the implementation, stop exposing internals.

Provide KREF_INIT() to allow static initialization of struct kref.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Peter Zijlstra 2016-11-14 17:12:23 +01:00 • committed by Ingo Molnar
parent 2b0b211134
commit 1e24edca05
5 changed files with 6 additions and 8 deletions
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2
include/linux/kref.h
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@ -24,6 +24,8 @@ struct kref {
atomic_t refcount;
};
#define KREF_INIT(n) { .refcount = ATOMIC_INIT(n), }
/**
* kref_init - initialize object.
* @kref: object in question.