Lines Matching full:_count
226 atomic_t _count; /* Usage count, see below. */
300 BUG_ON(atomic_read(&page->_count) == 0);
301 return atomic_dec_and_test(&page->_count);
310 return atomic_inc_not_zero(&page->_count);
319 return atomic_read(&page->_count);
326 atomic_inc(&page->_count);
335 atomic_set(&page->_count, 1);
599 * The atomic page->_mapcount, like _count, starts from -1:
