D34837.id104748.diff
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D34837.id104748.diff
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	Index: sys/kern/vfs_bio.c
	===================================================================
	--- sys/kern/vfs_bio.c
	+++ sys/kern/vfs_bio.c
	@@ -4852,7 +4852,8 @@
	void
	vfs_bio_clrbuf(struct buf *bp)
	{
	- int i, j, mask, sa, ea, slide;
	+ int i, j, sa, ea, slide, zbits;
	+ vm_page_bits_t mask;

	if ((bp->b_flags & (B_VMIO \| B_MALLOC)) != B_VMIO) {
	clrbuf(bp);
	@@ -4871,7 +4872,9 @@
	if (bp->b_pages[i] == bogus_page)
	continue;
	j = sa / DEV_BSIZE;
	- mask = ((1 << ((ea - sa) / DEV_BSIZE)) - 1) << j;
	+ zbits = (sizeof(vm_page_bits_t) * NBBY) -
	+ (ea - sa) / DEV_BSIZE;
	+ mask = (VM_PAGE_BITS_ALL >> zbits) << j;
	if ((bp->b_pages[i]->valid & mask) == mask)
	continue;
	if ((bp->b_pages[i]->valid & mask) == 0)