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Correct a problem where buffers might not be zeroed when needed. The

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B_MALLOC buffers might not have been properly zeroed.
This commit is contained in:
dyson 1998-03-27 06:48:24 +00:00
parent e16baaddc6
commit 1eaa978a47
1 changed files with 3 additions and 3 deletions
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6
sys/kern/vfs_bio.c
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@ -11,7 +11,7 @@
* 2. Absolutely no warranty of function or purpose is made by the author
* John S. Dyson.
*
* $Id: vfs_bio.c,v 1.158 1998/03/17 17:36:05 dyson Exp $
* $Id: vfs_bio.c,v 1.159 1998/03/19 22:48:12 dyson Exp $
*/
/*
@ -2293,8 +2293,7 @@ vfs_clean_pages(struct buf * bp)
void
vfs_bio_clrbuf(struct buf *bp) {
int i;
if (((bp->b_flags & (B_VMIO | B_MALLOC)) == B_VMIO) ||
((bp->b_flags & (B_VMIO | B_MALLOC)) == 0) && (bp->b_npages > 0) ) {
if ((bp->b_flags & (B_VMIO | B_MALLOC)) == B_VMIO) {
if( (bp->b_npages == 1) && (bp->b_bufsize < PAGE_SIZE)) {
int mask;
mask = 0;
@ -2362,6 +2361,7 @@ vm_hold_load_pages(struct buf * bp, vm_offset_t from, vm_offset_t to)
}
vm_page_wire(p);
p->valid = VM_PAGE_BITS_ALL;
p->flags &= ~PG_ZERO;
pmap_kenter(pg, VM_PAGE_TO_PHYS(p));
bp->b_pages[index] = p;
PAGE_WAKEUP(p);