XBF_READ
if (bp->b_flags & XBF_READ) {
bp->b_flags &= ~(XBF_READ | XBF_WRITE | XBF_READ_AHEAD |
bp->b_flags &= ~(XBF_ASYNC | XBF_READ | _XBF_DELWRI_Q |
if (!(flags & XBF_READ))
ASSERT(!(bp->b_flags & XBF_READ));
if (!(flags & XBF_READ))
bp->b_flags |= XBF_READ;
flags |= XBF_READ;
bp->b_flags &= ~XBF_READ;
const xfs_buf_flags_t flags = XBF_READ | XBF_ASYNC | XBF_READ_AHEAD;
bp->b_flags |= XBF_READ;
{ XBF_READ, "READ" }, \