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| author | peter <peter@FreeBSD.org> | 2002-04-28 00:15:48 +0000 |
|---|---|---|
| committer | peter <peter@FreeBSD.org> | 2002-04-28 00:15:48 +0000 |
| commit | 0feba1c376c506a50823d2756c48550954655faf (patch) | |
| tree | ed9386cd8bc5bf5db1a8d49e5119aef3aa591423 /sys/vm/vnode_pager.c | |
| parent | 91d576b0c5019ef4261a145263a2f6cb196c4e41 (diff) | |
| download | FreeBSD-src-0feba1c376c506a50823d2756c48550954655faf.zip FreeBSD-src-0feba1c376c506a50823d2756c48550954655faf.tar.gz | |
We do not necessarily need to map/unmap pages to zero parts of them.
On systems where physical memory is also direct mapped (alpha, sparc,
ia64 etc) this is slightly harmful.
Diffstat (limited to 'sys/vm/vnode_pager.c')
| -rw-r--r-- | sys/vm/vnode_pager.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/sys/vm/vnode_pager.c b/sys/vm/vnode_pager.c index f069b6a..46c7cef 100644 --- a/sys/vm/vnode_pager.c +++ b/sys/vm/vnode_pager.c @@ -305,7 +305,6 @@ vnode_pager_setsize(vp, nsize) * it can screw up NFS reads, so we don't allow the case. */ if (nsize & PAGE_MASK) { - vm_offset_t kva; vm_page_t m; m = vm_page_lookup(object, OFF_TO_IDX(nsize)); @@ -317,9 +316,7 @@ vnode_pager_setsize(vp, nsize) * Clear out partial-page garbage in case * the page has been mapped. */ - kva = vm_pager_map_page(m); - bzero((caddr_t)kva + base, size); - vm_pager_unmap_page(kva); + vm_page_zero_fill_area(m, base, size); /* * XXX work around SMP data integrity race |
