svn commit: r188608 - in head/sys: amd64/amd64 i386/i386
Alan Cox
alc at FreeBSD.org
Sat Feb 14 10:23:53 PST 2009
Author: alc
Date: Sat Feb 14 18:23:52 2009
New Revision: 188608
URL: http://svn.freebsd.org/changeset/base/188608
Log:
Remove unnecessary page queues locking around vm_page_busy() and
vm_page_wakeup(). (This change is applicable to RELENG_7 but not
RELENG_6.)
MFC after: 1 week
Modified:
head/sys/amd64/amd64/pmap.c
head/sys/i386/i386/pmap.c
Modified: head/sys/amd64/amd64/pmap.c
==============================================================================
--- head/sys/amd64/amd64/pmap.c Sat Feb 14 14:53:51 2009 (r188607)
+++ head/sys/amd64/amd64/pmap.c Sat Feb 14 18:23:52 2009 (r188608)
@@ -3400,9 +3400,7 @@ retry:
}
p = vm_page_lookup(object, pindex);
- vm_page_lock_queues();
vm_page_wakeup(p);
- vm_page_unlock_queues();
}
ptepa = VM_PAGE_TO_PHYS(p);
@@ -3416,15 +3414,11 @@ retry:
while ((pdpg =
pmap_allocpde(pmap, va, M_NOWAIT)) == NULL) {
PMAP_UNLOCK(pmap);
- vm_page_lock_queues();
vm_page_busy(p);
- vm_page_unlock_queues();
VM_OBJECT_UNLOCK(object);
VM_WAIT;
VM_OBJECT_LOCK(object);
- vm_page_lock_queues();
vm_page_wakeup(p);
- vm_page_unlock_queues();
PMAP_LOCK(pmap);
}
pde = (pd_entry_t *)PHYS_TO_DMAP(VM_PAGE_TO_PHYS(pdpg));
Modified: head/sys/i386/i386/pmap.c
==============================================================================
--- head/sys/i386/i386/pmap.c Sat Feb 14 14:53:51 2009 (r188607)
+++ head/sys/i386/i386/pmap.c Sat Feb 14 18:23:52 2009 (r188608)
@@ -3469,9 +3469,7 @@ retry:
}
p = vm_page_lookup(object, pindex);
- vm_page_lock_queues();
vm_page_wakeup(p);
- vm_page_unlock_queues();
}
ptepa = VM_PAGE_TO_PHYS(p);
More information about the svn-src-head
mailing list