linux-kernel - [PATCH v1 1/3] mm/memory_hotplug: Export generic_online

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon,  9 Sep 2019 13:48:28 +0200
From:   David Hildenbrand <david@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-mm@...ck.org, Souptick Joarder <jrdr.linux@...il.com>,
        linux-hyperv@...r.kernel.org, David Hildenbrand <david@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Oscar Salvador <osalvador@...e.com>,
        Michal Hocko <mhocko@...e.com>,
        Pavel Tatashin <pasha.tatashin@...een.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Wei Yang <richard.weiyang@...il.com>, Qian Cai <cai@....pw>
Subject: [PATCH v1 1/3] mm/memory_hotplug: Export generic_online_page()

Let's expose generic_online_page() so online_page_callback users can
simply fallback to the generic implementation when actually deciding to
online the pages.

Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Oscar Salvador <osalvador@...e.com>
Cc: Michal Hocko <mhocko@...e.com>
Cc: Pavel Tatashin <pasha.tatashin@...een.com>
Cc: Dan Williams <dan.j.williams@...el.com>
Cc: Wei Yang <richard.weiyang@...il.com>
Cc: Qian Cai <cai@....pw>
Signed-off-by: David Hildenbrand <david@...hat.com>
---
 include/linux/memory_hotplug.h | 1 +
 mm/memory_hotplug.c            | 5 ++---
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 8ee3a2ae5131..71a620eabb62 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -102,6 +102,7 @@ extern unsigned long __offline_isolated_pages(unsigned long start_pfn,
 
 typedef void (*online_page_callback_t)(struct page *page, unsigned int order);
 
+extern void generic_online_page(struct page *page, unsigned int order);
 extern int set_online_page_callback(online_page_callback_t callback);
 extern int restore_online_page_callback(online_page_callback_t callback);
 
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 2f0d2908e235..f32a5feaf7ff 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -49,8 +49,6 @@
  * and restore_online_page_callback() for generic callback restore.
  */
 
-static void generic_online_page(struct page *page, unsigned int order);
-
 static online_page_callback_t online_page_callback = generic_online_page;
 static DEFINE_MUTEX(online_page_callback_lock);
 
@@ -616,7 +614,7 @@ void __online_page_free(struct page *page)
 }
 EXPORT_SYMBOL_GPL(__online_page_free);
 
-static void generic_online_page(struct page *page, unsigned int order)
+void generic_online_page(struct page *page, unsigned int order)
 {
 	kernel_map_pages(page, 1 << order, 1);
 	__free_pages_core(page, order);
@@ -626,6 +624,7 @@ static void generic_online_page(struct page *page, unsigned int order)
 		totalhigh_pages_add(1UL << order);
 #endif
 }
+EXPORT_SYMBOL_GPL(generic_online_page);
 
 static int online_pages_range(unsigned long start_pfn, unsigned long nr_pages,
 			void *arg)
-- 
2.21.0