DISKFLAG_DIRECT_COMPLETION
d_flags = DISKFLAG_DIRECT_COMPLETION | DISKFLAG_CANZONE;
disk->d_flags = DISKFLAG_DIRECT_COMPLETION;
softc->disk->d_flags = DISKFLAG_DIRECT_COMPLETION | DISKFLAG_CANZONE;
disk->d_flags = DISKFLAG_UNMAPPED_BIO | DISKFLAG_DIRECT_COMPLETION;
dp->d_flags = DISKFLAG_UNMAPPED_BIO | DISKFLAG_DIRECT_COMPLETION;
if ((dp->d_flags & DISKFLAG_DIRECT_COMPLETION) != 0)