[haiku-commits] r35023 - haiku/trunk/src/system/kernel/vm
- From: ingo_weinhold@xxxxxx
- To: haiku-commits@xxxxxxxxxxxxx
- Date: Tue, 12 Jan 2010 02:22:09 +0100 (CET)
Author: bonefish
Date: 2010-01-12 02:22:09 +0100 (Tue, 12 Jan 2010)
New Revision: 35023
Changeset: http://dev.haiku-os.org/changeset/35023/haiku
Modified:
haiku/trunk/src/system/kernel/vm/vm_page.cpp
Log:
Introduced vm_page::modified flag, which is used by vm_unmap_page[s]() to
preserve the dirty flag of the mapping without having to potentially move the
page to the modified queue. This lifts the (ignored) requirement that the
pages to be unmapped must not be busy.
Modified: haiku/trunk/src/system/kernel/vm/vm_page.cpp
===================================================================
--- haiku/trunk/src/system/kernel/vm/vm_page.cpp 2010-01-11 22:21:33 UTC
(rev 35022)
+++ haiku/trunk/src/system/kernel/vm/vm_page.cpp 2010-01-12 01:22:09 UTC
(rev 35023)
@@ -413,6 +413,7 @@
kprintf("wired_count: %d\n", page->wired_count);
kprintf("usage_count: %d\n", page->usage_count);
kprintf("busy_writing: %d\n", page->busy_writing);
+ kprintf("modified: %d\n", page->modified);
#if DEBUG_PAGE_QUEUE
kprintf("queue: %p\n", page->queue);
#endif
@@ -2168,6 +2169,7 @@
int oldPageState = page->state;
page->state = PAGE_STATE_BUSY;
page->usage_count = 2;
+ page->modified = 0;
locker.Unlock();
@@ -2204,6 +2206,7 @@
page.state = PAGE_STATE_BUSY;
page.usage_count = 1;
+ page.modified = 0;
}
freeClearQueueLocker.Unlock();
Other related posts:
- » [haiku-commits] r35023 - haiku/trunk/src/system/kernel/vm - ingo_weinhold
