From: David Hildenbrand <david@redhat.com>
To: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
devel@linuxdriverproject.org, linux-fsdevel@vger.kernel.org,
linux-pm@vger.kernel.org, xen-devel@lists.xenproject.org,
kexec-ml <kexec@lists.infradead.org>,
pv-drivers@vmware.com, David Hildenbrand <david@redhat.com>,
Xavier Deguillard <xdeguillard@vmware.com>,
Nadav Amit <namit@vmware.com>, Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Julien Freche <jfreche@vmware.com>,
Andrew Morton <akpm@linux-foundation.org>,
Matthew Wilcox <willy@infradead.org>,
Michal Hocko <mhocko@suse.com>,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: [PATCH v1 6/8] vmw_balloon: mark inflated pages PG_offline
Date: Mon, 19 Nov 2018 11:16:14 +0100 [thread overview]
Message-ID: <20181119101616.8901-7-david@redhat.com> (raw)
In-Reply-To: <20181119101616.8901-1-david@redhat.com>
Mark inflated and never onlined pages PG_offline, to tell the world that
the content is stale and should not be dumped.
Cc: Xavier Deguillard <xdeguillard@vmware.com>
Cc: Nadav Amit <namit@vmware.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Julien Freche <jfreche@vmware.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
drivers/misc/vmw_balloon.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c
index e6126a4b95d3..8cc8bd9a4e32 100644
--- a/drivers/misc/vmw_balloon.c
+++ b/drivers/misc/vmw_balloon.c
@@ -544,6 +544,36 @@ unsigned int vmballoon_page_order(enum vmballoon_page_size_type page_size)
return page_size == VMW_BALLOON_2M_PAGE ? VMW_BALLOON_2M_ORDER : 0;
}
+/**
+ * vmballoon_mark_page_offline() - mark a page as offline
+ * @page: pointer for the page
+ * @page_size: the size of the page.
+ */
+static void
+vmballoon_mark_page_offline(struct page *page,
+ enum vmballoon_page_size_type page_size)
+{
+ int i;
+
+ for (i = 0; i < 1ULL << vmballoon_page_order(page_size); i++)
+ __SetPageOffline(page + i);
+}
+
+/**
+ * vmballoon_mark_page_online() - mark a page as online
+ * @page: pointer for the page
+ * @page_size: the size of the page.
+ */
+static void
+vmballoon_mark_page_online(struct page *page,
+ enum vmballoon_page_size_type page_size)
+{
+ int i;
+
+ for (i = 0; i < 1ULL << vmballoon_page_order(page_size); i++)
+ __ClearPageOffline(page + i);
+}
+
/**
* vmballoon_page_in_frames() - returns the number of frames in a page.
* @page_size: the size of the page.
@@ -612,6 +642,7 @@ static int vmballoon_alloc_page_list(struct vmballoon *b,
ctl->page_size);
if (page) {
+ vmballoon_mark_page_offline(page, ctl->page_size);
/* Success. Add the page to the list and continue. */
list_add(&page->lru, &ctl->pages);
continue;
@@ -850,6 +881,7 @@ static void vmballoon_release_page_list(struct list_head *page_list,
list_for_each_entry_safe(page, tmp, page_list, lru) {
list_del(&page->lru);
+ vmballoon_mark_page_online(page, page_size);
__free_pages(page, vmballoon_page_order(page_size));
}
--
2.17.2
next prev parent reply other threads:[~2018-11-19 10:17 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20181119101616.8901-1-david@redhat.com>
2018-11-19 10:16 ` [PATCH v1 1/8] mm: balloon: update comment about isolation/migration/compaction David Hildenbrand
2018-11-21 1:56 ` Michael S. Tsirkin
2018-11-19 10:16 ` [PATCH v1 2/8] mm: convert PG_balloon to PG_offline David Hildenbrand
2018-11-19 11:56 ` Konstantin Khlebnikov
2018-11-19 16:06 ` David Hildenbrand
2018-11-21 1:58 ` Michael S. Tsirkin
2018-11-21 2:44 ` Pankaj Gupta
2018-11-19 10:16 ` [PATCH v1 3/8] kexec: export PG_offline to VMCOREINFO David Hildenbrand
2018-11-21 1:59 ` Michael S. Tsirkin
2018-11-21 2:58 ` Dave Young
2018-11-21 6:04 ` Baoquan He
2018-11-21 8:50 ` David Hildenbrand
2018-11-19 10:16 ` [PATCH v1 4/8] xen/balloon: mark inflated pages PG_offline David Hildenbrand
2018-11-19 12:22 ` Juergen Gross
2018-11-19 13:07 ` David Hildenbrand
2018-11-19 10:16 ` [PATCH v1 5/8] hv_balloon: " David Hildenbrand
2018-11-20 8:45 ` Pankaj Gupta
2018-11-20 8:49 ` David Hildenbrand
2018-11-20 9:37 ` Pankaj Gupta
2018-11-21 1:04 ` Pankaj Gupta
2018-11-19 10:16 ` David Hildenbrand [this message]
2018-11-21 3:22 ` [PATCH v1 6/8] vmw_balloon: " Nadav Amit
2018-11-21 8:54 ` David Hildenbrand
2018-11-19 10:16 ` [PATCH v1 7/8] PM / Hibernate: use pfn_to_online_page() David Hildenbrand
2018-11-19 12:13 ` Michal Hocko
2018-11-19 13:16 ` Pavel Machek
2018-11-20 21:23 ` Rafael J. Wysocki
2018-11-19 10:16 ` [PATCH v1 8/8] PM / Hibernate: exclude all PageOffline() pages David Hildenbrand
2018-11-20 21:22 ` Rafael J. Wysocki
2018-11-21 11:35 ` William Kucharski
2018-11-21 12:21 ` David Hildenbrand
2018-11-19 10:18 ` [PATCH v1] makedumpfile: exclude pages that are logically offline David Hildenbrand
2018-11-21 14:58 ` Kazuhito Hagio
2018-11-21 15:35 ` David Hildenbrand
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