Function sglist_append_bio

freebsd/kern/subr_sglist.c:336–347

* Append the segments to describe a bio's data to a scatter/gather list. * If there are insufficient segments, then this fails with EFBIG. * * NOTE: This function expects bio_bcount to be initialized. */

 * NOTE: This function expects bio_bcount to be initialized.
 */
int
sglist_append_bio(struct sglist *sg, struct bio *bp)
{
	int error;

	if ((bp->bio_flags & BIO_UNMAPPED) == 0)
		error = sglist_append(sg, bp->bio_data, bp->bio_bcount);
	else
		error = sglist_append_vmpages(sg, bp->bio_ma,
		    bp->bio_ma_offset, bp->bio_bcount);
	return (error);
}

/*
 * Append a single physical address range to a scatter/gather list.