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authorArtur Grabowski <art@cvs.openbsd.org>2001-08-11 10:57:23 +0000
committerArtur Grabowski <art@cvs.openbsd.org>2001-08-11 10:57:23 +0000
commit7a180b0dffd8a6191dc39c284c4b43646bbe8ac6 (patch)
tree5442aa1b4d2ff26b5330a6478a7d647080cc100a /sys/vm/vm_page.h
parent511fb2556ded7a7b5ce46090532eccce46d77468 (diff)
Various random fixes from NetBSD.
Including support for zeroing pages in the idle loop (not enabled yet).
Diffstat (limited to 'sys/vm/vm_page.h')
-rw-r--r--sys/vm/vm_page.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/vm/vm_page.h b/sys/vm/vm_page.h
index 3c9665221fd..3616fc38b79 100644
--- a/sys/vm/vm_page.h
+++ b/sys/vm/vm_page.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: vm_page.h,v 1.16 2001/08/06 14:03:05 art Exp $ */
+/* $OpenBSD: vm_page.h,v 1.17 2001/08/11 10:57:22 art Exp $ */
/* $NetBSD: vm_page.h,v 1.35 2000/03/26 20:54:48 kleink Exp $ */
/*
@@ -149,12 +149,17 @@ struct vm_page {
* PQ_ ==> lock by page queue lock
* PQ_FREE is locked by free queue lock and is mutex with all other PQs
*
+ * PG_ZERO is used to indicate that a page has been pre-zero'd. This flag
+ * is only set when the page is on no queues, and is cleared when the page
+ * is placed on the free list.
+ *
* possible deadwood: PG_FAULTING, PQ_LAUNDRY
*/
#define PG_CLEAN 0x0008 /* page has not been modified */
#define PG_BUSY 0x0010 /* page is in transit */
#define PG_WANTED 0x0020 /* someone is waiting for page */
#define PG_TABLED 0x0040 /* page is in VP table */
+#define PG_ZERO 0x0100 /* page is pre-zero'd */
#define PG_FAKE 0x0200 /* page is placeholder for pagein */
#define PG_FILLED 0x0400 /* client flag to set when filled */
#define PG_DIRTY 0x0800 /* client flag to set when dirty */