upstream/opnsense-src
1
0
Fork 0
mirror of https://github.com/opnsense/src.git synced 2026-06-09 08:43:19 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Only assert the length of the passed bio in the mdstart_vnode() when

Browse source 
the bio is unmapped, so we must map the bio pages into pbuf.  This
works around the geom classes which do not follow the MAXPHYS limit on
the i/o size, since such classes do not know about unmapped bios
either.

Reported by:	Paolo Pinto <paolo.pinto@netasq.com>
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2013-12-10 20:52:31 +00:00
parent 9d75ca28f0
commit 60b6e19785
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
sys/dev/md/md.c
View file

@ -746,12 +746,12 @@ mdstart_vnode(struct md_s *sc, struct bio *bp)
return (error);
}
KASSERT(bp->bio_length <= MAXPHYS, ("bio_length %jd",
(uintmax_t)bp->bio_length));
if ((bp->bio_flags & BIO_UNMAPPED) == 0) {
pb = NULL;
aiov.iov_base = bp->bio_data;
} else {
KASSERT(bp->bio_length <= MAXPHYS, ("bio_length %jd",
(uintmax_t)bp->bio_length));
pb = getpbuf(&md_vnode_pbuf_freecnt);
pmap_qenter((vm_offset_t)pb->b_data, bp->bio_ma, bp->bio_ma_n);
aiov.iov_base = (void *)((vm_offset_t)pb->b_data +