From 44220d7e1e07bbf1c88215543c5877abcdb88d29 Mon Sep 17 00:00:00 2001 From: jhb Date: Fri, 24 Jul 2009 13:50:29 +0000 Subject: Add a new type of VM object: OBJT_SG. An OBJT_SG object is very similar to a device pager (OBJT_DEVICE) object in that it uses fictitious pages to provide aliases to other memory addresses. The primary difference is that it uses an sglist(9) to determine the physical addresses for a given offset into the object instead of invoking the d_mmap() method in a device driver. Reviewed by: alc Approved by: re (kensmith) MFC after: 2 weeks --- sys/vm/vm_pageout.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'sys/vm/vm_pageout.c') diff --git a/sys/vm/vm_pageout.c b/sys/vm/vm_pageout.c index b64215b..19edce1 100644 --- a/sys/vm/vm_pageout.c +++ b/sys/vm/vm_pageout.c @@ -513,7 +513,9 @@ vm_pageout_object_deactivate_pages(pmap, first_object, desired) int actcount, rcount, remove_mode; VM_OBJECT_LOCK_ASSERT(first_object, MA_OWNED); - if (first_object->type == OBJT_DEVICE || first_object->type == OBJT_PHYS) + if (first_object->type == OBJT_DEVICE || + first_object->type == OBJT_SG || + first_object->type == OBJT_PHYS) return; for (object = first_object;; object = backing_object) { if (pmap_resident_count(pmap) <= desired) -- cgit v1.1