The patch titled
Subject: mm: page_alloc: move mark_free_page() into snapshot.c
has been added to the -mm mm-unstable branch. Its filename is
mm-page_alloc-move-mark_free_page-into-snapshotc.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_alloc-move-mark_free_page-into-snapshotc.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Subject: mm: page_alloc: move mark_free_page() into snapshot.c
Date: Tue, 16 May 2023 14:38:17 +0800
The mark_free_page() is only used in kernel/power/snapshot.c, move it out
to reduce a bit of page_alloc.c
Link: https://lkml.kernel.org/r/20230516063821.121844-10-wangkefeng.wang@xxxxxxxxxx
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: "Huang, Ying" <ying.huang@xxxxxxxxx>
Cc: Iurii Zaikin <yzaikin@xxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Len Brown <len.brown@xxxxxxxxx>
Cc: Luis Chamberlain <mcgrof@xxxxxxxxxx>
Cc: Mike Rapoport (IBM) <rppt@xxxxxxxxxx>
Cc: Oscar Salvador <osalvador@xxxxxxx>
Cc: Pavel Machek <pavel@xxxxxx>
Cc: Rafael J. Wysocki <rafael@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/suspend.h | 3 --
kernel/power/snapshot.c | 52 +++++++++++++++++++++++++++++++++++
mm/page_alloc.c | 55 --------------------------------------
3 files changed, 52 insertions(+), 58 deletions(-)
--- a/include/linux/suspend.h~mm-page_alloc-move-mark_free_page-into-snapshotc
+++ a/include/linux/suspend.h
@@ -364,9 +364,6 @@ struct pbe {
struct pbe *next;
};
-/* mm/page_alloc.c */
-extern void mark_free_pages(struct zone *zone);
-
/**
* struct platform_hibernation_ops - hibernation platform support
*
--- a/kernel/power/snapshot.c~mm-page_alloc-move-mark_free_page-into-snapshotc
+++ a/kernel/power/snapshot.c
@@ -1228,6 +1228,58 @@ unsigned int snapshot_additional_pages(s
return 2 * rtree;
}
+/*
+ * Touch the watchdog for every WD_PAGE_COUNT pages.
+ */
+#define WD_PAGE_COUNT (128*1024)
+
+static void mark_free_pages(struct zone *zone)
+{
+ unsigned long pfn, max_zone_pfn, page_count = WD_PAGE_COUNT;
+ unsigned long flags;
+ unsigned int order, t;
+ struct page *page;
+
+ if (zone_is_empty(zone))
+ return;
+
+ spin_lock_irqsave(&zone->lock, flags);
+
+ max_zone_pfn = zone_end_pfn(zone);
+ for (pfn = zone->zone_start_pfn; pfn < max_zone_pfn; pfn++)
+ if (pfn_valid(pfn)) {
+ page = pfn_to_page(pfn);
+
+ if (!--page_count) {
+ touch_nmi_watchdog();
+ page_count = WD_PAGE_COUNT;
+ }
+
+ if (page_zone(page) != zone)
+ continue;
+
+ if (!swsusp_page_is_forbidden(page))
+ swsusp_unset_page_free(page);
+ }
+
+ for_each_migratetype_order(order, t) {
+ list_for_each_entry(page,
+ &zone->free_area[order].free_list[t], buddy_list) {
+ unsigned long i;
+
+ pfn = page_to_pfn(page);
+ for (i = 0; i < (1UL << order); i++) {
+ if (!--page_count) {
+ touch_nmi_watchdog();
+ page_count = WD_PAGE_COUNT;
+ }
+ swsusp_set_page_free(pfn_to_page(pfn + i));
+ }
+ }
+ }
+ spin_unlock_irqrestore(&zone->lock, flags);
+}
+
#ifdef CONFIG_HIGHMEM
/**
* count_free_highmem_pages - Compute the total number of free highmem pages.
--- a/mm/page_alloc.c~mm-page_alloc-move-mark_free_page-into-snapshotc
+++ a/mm/page_alloc.c
@@ -2401,61 +2401,6 @@ void drain_all_pages(struct zone *zone)
__drain_all_pages(zone, false);
}
-#ifdef CONFIG_HIBERNATION
-
-/*
- * Touch the watchdog for every WD_PAGE_COUNT pages.
- */
-#define WD_PAGE_COUNT (128*1024)
-
-void mark_free_pages(struct zone *zone)
-{
- unsigned long pfn, max_zone_pfn, page_count = WD_PAGE_COUNT;
- unsigned long flags;
- unsigned int order, t;
- struct page *page;
-
- if (zone_is_empty(zone))
- return;
-
- spin_lock_irqsave(&zone->lock, flags);
-
- max_zone_pfn = zone_end_pfn(zone);
- for (pfn = zone->zone_start_pfn; pfn < max_zone_pfn; pfn++)
- if (pfn_valid(pfn)) {
- page = pfn_to_page(pfn);
-
- if (!--page_count) {
- touch_nmi_watchdog();
- page_count = WD_PAGE_COUNT;
- }
-
- if (page_zone(page) != zone)
- continue;
-
- if (!swsusp_page_is_forbidden(page))
- swsusp_unset_page_free(page);
- }
-
- for_each_migratetype_order(order, t) {
- list_for_each_entry(page,
- &zone->free_area[order].free_list[t], buddy_list) {
- unsigned long i;
-
- pfn = page_to_pfn(page);
- for (i = 0; i < (1UL << order); i++) {
- if (!--page_count) {
- touch_nmi_watchdog();
- page_count = WD_PAGE_COUNT;
- }
- swsusp_set_page_free(pfn_to_page(pfn + i));
- }
- }
- }
- spin_unlock_irqrestore(&zone->lock, flags);
-}
-#endif /* CONFIG_PM */
-
static bool free_unref_page_prepare(struct page *page, unsigned long pfn,
unsigned int order)
{
_
Patches currently in -mm which might be from wangkefeng.wang@xxxxxxxxxx are
mm-memory_failure-move-memory_failure_attr_group-under-memory_failure.patch
mm-memory-failure-move-sysctl-register-in-memory_failure_init.patch
mm-page_alloc-move-mirrored_kernelcore-into-mm_initc.patch
mm-page_alloc-move-init_on_alloc-free-into-mm_initc.patch
mm-page_alloc-move-set_zone_contiguous-into-mm_initc.patch
mm-page_alloc-collect-mem-statistic-into-show_memc.patch
mm-page_alloc-squash-page_is_consistent.patch
mm-page_alloc-remove-alloc_contig_dump_pages-stub.patch
mm-page_alloc-split-out-fail_page_alloc.patch
mm-page_alloc-split-out-debug_pagealloc.patch
mm-page_alloc-move-mark_free_page-into-snapshotc.patch
mm-page_alloc-move-pm_-function-into-power.patch
mm-vmscan-use-gfp_has_io_fs.patch
mm-page_alloc-move-sysctls-into-it-own-fils.patch
mm-page_alloc-move-is_check_pages_enabled-into-page_allocc.patch
