Checkpoint of a new physical memory backed object type, that does not

have pv_entries.  This is intended for very special circumstances,
eg: a certain database that has a 1GB shm segment mapped into 300
processes.  That would consume 2GB of kvm just to hold the pv_entries
alone.  This would not be used on systems unless the physical ram was
available, as it's not pageable.

This is a work-in-progress, but is a useful and functional checkpoint.
Matt has got some more fixes for it that will be committed soon.

Reviewed by:	dillon

1 files changed, 2 insertions, 0 deletions

diff --git a/sys/vm/vm_pager.c b/sys/vm/vm_pager.c
index 7c08a3a..a251b97 100644
--- a/sys/vm/vm_pager.c
+++ b/sys/vm/vm_pager.c
@@ -92,6 +92,7 @@ extern struct pagerops defaultpagerops;
 extern struct pagerops swappagerops;
 extern struct pagerops vnodepagerops;
 extern struct pagerops devicepagerops;
+extern struct pagerops physpagerops;
 
 int cluster_pbuf_freecnt = -1;	/* unlimited to begin with */
 
@@ -173,6 +174,7 @@ struct pagerops *pagertab[] = {
 	&swappagerops,		/* OBJT_SWAP */
 	&vnodepagerops,		/* OBJT_VNODE */
 	&devicepagerops,	/* OBJT_DEVICE */
+	&physpagerops,		/* OBJT_PHYS */
 	&deadpagerops		/* OBJT_DEAD */
 };