diff options
| -rw-r--r-- | sys/geom/geom_io.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sys/geom/geom_io.c b/sys/geom/geom_io.c index f611168..25a90de 100644 --- a/sys/geom/geom_io.c +++ b/sys/geom/geom_io.c @@ -718,8 +718,17 @@ g_io_schedule_down(struct thread *tp __unused) */ excess = bp->bio_offset + bp->bio_length; if (excess > bp->bio_to->mediasize) { + KASSERT((bp->bio_flags & BIO_UNMAPPED) == 0 || + round_page(bp->bio_ma_offset + + bp->bio_length) / PAGE_SIZE == bp->bio_ma_n, + ("excess bio %p too short", bp)); excess -= bp->bio_to->mediasize; bp->bio_length -= excess; + if ((bp->bio_flags & BIO_UNMAPPED) != 0) { + bp->bio_ma_n = round_page( + bp->bio_ma_offset + + bp->bio_length) / PAGE_SIZE; + } if (excess > 0) CTR3(KTR_GEOM, "g_down truncated bio " "%p provider %s by %d", bp, |
