[PATCH v1] s390/mm: remove unused cmma functions

David Hildenbrand
2021-08-06T07:54:40Z

The last user of arch_set_page_states(), arch_set_page_nodat() and
arch_test_page_nodat() was removed in commit 394216275c7d
("s390: remove broken hibernate / power management support"),
let's remove these functions.

Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: linux-s390@vger.kernel.org
Signed-off-by: David Hildenbrand <david@redhat.com>
---
arch/s390/include/asm/page.h | 3 ---
arch/s390/mm/page-states.c | 43 ------------------------------------
2 files changed, 46 deletions(-)

diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index 3ba945c6b9dc..d98d17a36c7b 100644
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -144,9 +144,6 @@ struct page;
void arch_free_page(struct page *page, int order);
void arch_alloc_page(struct page *page, int order);
void arch_set_page_dat(struct page *page, int order);
-void arch_set_page_nodat(struct page *page, int order);
-int arch_test_page_nodat(struct page *page);
-void arch_set_page_states(int make_stable);

static inline int devmem_is_allowed(unsigned long pfn)
{
diff --git a/arch/s390/mm/page-states.c b/arch/s390/mm/page-states.c
index 68b153083a92..18a6381097a9 100644
--- a/arch/s390/mm/page-states.c
+++ b/arch/s390/mm/page-states.c
@@ -228,46 +228,3 @@ void arch_set_page_dat(struct page *page, int order)
return;
set_page_stable_dat(page, order);
}
-
-void arch_set_page_nodat(struct page *page, int order)
-{
- if (cmma_flag < 2)
- return;
- set_page_stable_nodat(page, order);
-}
-
-int arch_test_page_nodat(struct page *page)
-{
- unsigned char state;
-
- if (cmma_flag < 2)
- return 0;
- state = get_page_state(page);
- return !!(state & 0x20);
-}
-
-void arch_set_page_states(int make_stable)
-{
- unsigned long flags, order, t;
- struct list_head *l;
- struct page *page;
- struct zone *zone;
-
- if (!cmma_flag)
- return;
- if (make_stable)
- drain_local_pages(NULL);
- for_each_populated_zone(zone) {
- spin_lock_irqsave(&zone->lock, flags);
- for_each_migratetype_order(order, t) {
- list_for_each(l, &zone->free_area[order].free_list[t]) {
- page = list_entry(l, struct page, lru);
- if (make_stable)
- set_page_stable_dat(page, order);
- else
- set_page_unused(page, order);
- }
- }
- spin_unlock_irqrestore(&zone->lock, flags);
- }
-}

base-commit: c500bee1c5b2f1d59b1081ac879d73268ab0ff17
--
2.31.1