The patch titled
Subject: xen/balloon: mark inflated pages PG_offline
has been added to the -mm tree. Its filename is
xen-balloon-mark-inflated-pages-pg_offline.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/xen-balloon-mark-inflated-pages-pg_offline.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/xen-balloon-mark-inflated-pages-pg_offline.patch
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------------------------------------------------------
From: David Hildenbrand <david@xxxxxxxxxx>
Subject: xen/balloon: mark inflated pages PG_offline
Mark inflated and never onlined pages PG_offline, to tell the world that
the content is stale and should not be dumped.
Link: http://lkml.kernel.org/r/20181119101616.8901-5-david@xxxxxxxxxx
Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
Cc: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
Cc: Juergen Gross <jgross@xxxxxxxx>
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: "Michael S. Tsirkin" <mst@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/drivers/xen/balloon.c~xen-balloon-mark-inflated-pages-pg_offline
+++ a/drivers/xen/balloon.c
@@ -425,6 +425,7 @@ static int xen_bring_pgs_online(struct p
for (i = 0; i < size; i++) {
p = pfn_to_page(start_pfn + i);
__online_page_set_limits(p);
+ __SetPageOffline(p);
__balloon_append(p);
}
mutex_unlock(&balloon_mutex);
@@ -493,6 +494,7 @@ static enum bp_state increase_reservatio
xenmem_reservation_va_mapping_update(1, &page, &frame_list[i]);
/* Relinquish the page back to the allocator. */
+ __ClearPageOffline(page);
free_reserved_page(page);
}
@@ -519,6 +521,7 @@ static enum bp_state decrease_reservatio
state = BP_EAGAIN;
break;
}
+ __SetPageOffline(page);
adjust_managed_page_count(page, -1);
xenmem_reservation_scrub_page(page);
list_add(&page->lru, &pages);
_
Patches currently in -mm which might be from david@xxxxxxxxxx are
mm-balloon-update-comment-about-isolation-migration-compaction.patch
mm-convert-pg_balloon-to-pg_offline.patch
kexec-export-pg_offline-to-vmcoreinfo.patch
xen-balloon-mark-inflated-pages-pg_offline.patch
hv_balloon-mark-inflated-pages-pg_offline.patch
vmw_balloon-mark-inflated-pages-pg_offline.patch
pm-hibernate-use-pfn_to_online_page.patch
pm-hibernate-exclude-all-pageoffline-pages.patch
