ATOMIC_DEC_AND_MUTEX(9)                Mutex API reference                ATOMIC_DEC_AND_MUTEX(9)



NAME
       atomic_dec_and_mutex_lock - return holding mutex if we dec to 0

SYNOPSIS
       int atomic_dec_and_mutex_lock(atomic_t * cnt, struct mutex * lock);

ARGUMENTS
       cnt
           the atomic which we are to dec

       lock
           the mutex to return holding if we dec to 0

DESCRIPTION
       return true and hold lock if we dec to 0, return false otherwise

AUTHOR
       Rusty Russell <rusty AT rustcorp.au>
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   ATOMIC_DEC_AND_MUTEX(9)