doubt regarding atomic_dec_and_lock kernel function
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doubt regarding atomic_dec_and_lock kernel function
Hi,
I have a doubt regarding the function atomic_dec_and_lock.
the prototype is int atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock)
My doubt is whether after returning from this function we will obtain the lock irrespective of the counter value ( zero or not zero).
Or is it like that we will obtain lock only when the counter is zero.
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