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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

atomic_t * cnt

the atomic which we are to dec

struct mutex * 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@rustcorp.com.au>

Author.

COPYRIGHT

July 2017 Kernel Hackers Manual 4.12