Add a new option, OBJPR_NOTMAPPED, to vm_object_page_remove(). Passing this

option to vm_object_page_remove() asserts that the specified range of pages
is not mapped, or more precisely that none of these pages have any managed
mappings.  Thus, vm_object_page_remove() need not call pmap_remove_all() on
the pages.

This change not only saves time by eliminating pointless calls to
pmap_remove_all(), but it also eliminates an inconsistency in the use of
pmap_remove_all() versus related functions, like pmap_remove_write().  It
eliminates harmless but pointless calls to pmap_remove_all() that were being
performed on PG_UNMANAGED pages.

Update all of the existing assertions on pmap_remove_all() to reflect this
change.

Reviewed by:	kib

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/ufs/ffs/ffs_inode.c b/sys/ufs/ffs/ffs_inode.c
index a7b43e2..62fa8e0 100644
--- a/sys/ufs/ffs/ffs_inode.c
+++ b/sys/ufs/ffs/ffs_inode.c
@@ -128,7 +128,7 @@ ffs_pages_remove(struct vnode *vp, vm_pindex_t start, vm_pindex_t end)
 	if ((object = vp->v_object) == NULL)
 		return;
 	VM_OBJECT_LOCK(object);
-	vm_object_page_remove(object, start, end, FALSE);
+	vm_object_page_remove(object, start, end, 0);
 	VM_OBJECT_UNLOCK(object);
 }