int buf_wait (
struct buf * bp
) {
LIST *pBufHead = &bp->b_vp->v_mount->mnt_buflist;
/* Make sure I/O is complete */
if ((bp->b_flags & B_DONE) == 0) {
if (bio_wait (bp->b_bio)) {
bp->b_flags |= B_ERROR;
}
buf_done (bp, OK);
}
if ((bp->b_flags & B_ERROR) || bp->b_error) {
if ((bp->b_flags & B_INVAL) == 0) {
bp->b_flags |= B_INVAL;
listRemove (pBufHead, &bp->b_node); /* Remove from list */
listInsert (pBufHead, NULL, &bp->b_node); /* Insert at list head */
}
if (!bp->b_error) {
bp->b_error = EIO;
} else {
bp->b_flags |= B_ERROR;
}
return (bp->b_error);
} else {
return (OK);
}
}
static int
vdev_disk_physio(struct device *dev, caddr_t data, size_t size,
uint64_t offset, int write)
{
struct bio *bio;
int ret;
bio = alloc_bio();
if (write)
bio->bio_cmd = BIO_WRITE;
else
bio->bio_cmd = BIO_READ;
bio->bio_dev = dev;
bio->bio_data = data;
bio->bio_offset = offset;
bio->bio_bcount = size;
bio->bio_dev->driver->devops->strategy(bio);
ret = bio_wait(bio);
destroy_bio(bio);
return ret;
}
