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#include <sys/rwlock.h>
int
rw_lock_held(krwlock_t *rwlp)
{
BUG_ON(rwlp->rw_magic != RW_MAGIC);
#ifdef CONFIG_RWSEM_GENERIC_SPINLOCK
if (rwlp->rw_sem.activity != 0) {
#else
if (rwlp->rw_sem.count != 0) {
#endif
return 1;
}
return 0;
}
int
rw_read_held(krwlock_t *rwlp)
{
BUG_ON(rwlp->rw_magic != RW_MAGIC);
if (rw_lock_held(rwlp) && rwlp->rw_owner == NULL) {
return 1;
}
return 0;
}
int
rw_write_held(krwlock_t *rwlp)
{
BUG_ON(rwlp->rw_magic != RW_MAGIC);
if (rwlp->rw_owner == current) {
return 1;
}
return 0;
}
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