Author: benno
Date: Thu Sep 4 00:10:06 2014
New Revision: 271070
URL: http://svnweb.freebsd.org/changeset/base/271070
Log:
Add KASSERTs to catch the case where a developer may have forgotten to
set bo_bsize on a bufobj.
This is a slight modification of the patch provided.
PR: 193146
Submitted by: Conrad Meyer <conrad.me...@isilon.com>
Sponsored by: EMC Isilon Storage Division
Modified:
head/sys/kern/vfs_bio.c
Modified: head/sys/kern/vfs_bio.c
==============================================================================
--- head/sys/kern/vfs_bio.c Wed Sep 3 23:29:06 2014 (r271069)
+++ head/sys/kern/vfs_bio.c Thu Sep 4 00:10:06 2014 (r271070)
@@ -2971,6 +2971,7 @@ bp_unmapped_get_kva(struct buf *bp, dadd
* if the buffer was mapped.
*/
bsize = vn_isdisk(bp->b_vp, NULL) ? DEV_BSIZE : bp->b_bufobj->bo_bsize;
+ KASSERT(bsize != 0, ("bsize == 0, check bo->bo_bsize"));
offset = blkno * bsize;
maxsize = size + (offset & PAGE_MASK);
maxsize = imax(maxsize, bsize);
@@ -3220,6 +3221,7 @@ loop:
return NULL;
bsize = vn_isdisk(vp, NULL) ? DEV_BSIZE : bo->bo_bsize;
+ KASSERT(bsize != 0, ("bsize == 0, check bo->bo_bsize"));
offset = blkno * bsize;
vmio = vp->v_object != NULL;
if (vmio) {
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