static int
vtblk_resume(device_t dev)
{
struct vtblk_softc *sc;
sc = device_get_softc(dev);
VTBLK_LOCK(sc);
/* XXX BMV: virtio_reinit(), etc needed here? */
sc->vtblk_flags &= ~VTBLK_FLAG_SUSPEND;
vtblk_startio(sc);
VTBLK_UNLOCK(sc);
return (0);
}
static int
vtblk_resume(device_t dev)
{
struct vtblk_softc *sc;
sc = device_get_softc(dev);
lwkt_serialize_enter(&sc->vtblk_slz);
/* XXX BMV: virtio_reinit(), etc needed here? */
sc->vtblk_flags &= ~VTBLK_FLAG_SUSPEND;
#if 0 /* XXX Resume IO? */
vtblk_startio(sc);
#endif
lwkt_serialize_exit(&sc->vtblk_slz);
return (0);
}
static int
vtblk_strategy(struct dev_strategy_args *ap)
{
struct vtblk_softc *sc;
cdev_t dev = ap->a_head.a_dev;
sc = dev->si_drv1;
struct bio *bio = ap->a_bio;
struct buf *bp = bio->bio_buf;
if (sc == NULL) {
vtblk_finish_bio(bio, EINVAL);
return EINVAL;
}
/*
* Fail any write if RO. Unfortunately, there does not seem to
* be a better way to report our readonly'ness to GEOM above.
*
* XXX: Is that true in DFly?
*/
if (sc->vtblk_flags & VTBLK_FLAG_READONLY &&
(bp->b_cmd == BUF_CMD_READ || bp->b_cmd == BUF_CMD_FLUSH)) {
vtblk_finish_bio(bio, EROFS);
return (EINVAL);
}
lwkt_serialize_enter(&sc->vtblk_slz);
if ((sc->vtblk_flags & VTBLK_FLAG_DETACH) == 0) {
devstat_start_transaction(&sc->stats);
bioqdisksort(&sc->vtblk_bioq, bio);
vtblk_startio(sc);
} else {
vtblk_finish_bio(bio, ENXIO);
}
lwkt_serialize_exit(&sc->vtblk_slz);
return 0;
}
