BH_Uptodate
(1 << BH_Dirty) | (1 << BH_Uptodate));
BIT(BH_Dirty)|BIT(BH_Uptodate));
BIT(inode->i_blkbits), BIT(BH_Uptodate));
bits = sbh->b_state & (BIT(BH_Uptodate) | BIT(BH_Mapped));
if (bits & BIT(BH_Uptodate))
(BIT(BH_Uptodate) | BIT(BH_Mapped) | BIT(BH_NILFS_Node) | \
(BIT(BH_Uptodate) | BIT(BH_Dirty) | BIT(BH_Mapped) |
(BIT(BH_Uptodate) | BIT(BH_Dirty) | BIT(BH_Mapped) |
const unsigned long set_bits = BIT(BH_Uptodate);
if (test_bit(BH_Uptodate, &bh->b_state))
set_bit(BH_Uptodate, &bh->b_state);
clear_bit(BH_Uptodate, &bh->b_state);
return test_bit_acquire(BH_Uptodate, &bh->b_state);