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 <[email protected]>
Author.