BH_ 90 include/linux/buffer_head.h if (!test_bit(BH_##bit, &(bh)->b_state)) \ BH_ 91 include/linux/buffer_head.h set_bit(BH_##bit, &(bh)->b_state); \ BH_ 95 include/linux/buffer_head.h clear_bit(BH_##bit, &(bh)->b_state); \ BH_ 99 include/linux/buffer_head.h return test_bit(BH_##bit, &(bh)->b_state); \ BH_ 108 include/linux/buffer_head.h return test_and_set_bit(BH_##bit, &(bh)->b_state); \ BH_ 112 include/linux/buffer_head.h return test_and_clear_bit(BH_##bit, &(bh)->b_state); \