[PATCH v1 05/12] powerpc/pseries: CMM: Use adjust_managed_page_count() insted of totalram_pages_*

[David Hildenbrand]

adjust_managed_page_count() performs a totalram_pages_add(), but also
adjust the managed pages of the zone. Let's use that instead, similar to
virtio-balloon. Use it before freeing a page.

Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Michael Ellerman <m...@ellerman.id.au>
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: Pavel Tatashin <pasha.tatas...@soleen.com>
Cc: Richard Fontana <rfont...@redhat.com>
Cc: Allison Randal <alli...@lohutok.net>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: Arun KS <aru...@codeaurora.org>
Signed-off-by: David Hildenbrand <da...@redhat.com>
---
 arch/powerpc/platforms/pseries/cmm.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/platforms/pseries/cmm.c 
b/arch/powerpc/platforms/pseries/cmm.c
index 33d31e48ec15..f82c468ca2c4 100644
--- a/arch/powerpc/platforms/pseries/cmm.c
+++ b/arch/powerpc/platforms/pseries/cmm.c
@@ -164,7 +164,7 @@ static long cmm_alloc_pages(long nr)
 
                list_add(&page->lru, &cmm_page_list);
                loaned_pages++;
-               totalram_pages_dec();
+               adjust_managed_page_count(page, -1);
                spin_unlock(&cmm_lock);
                nr--;
        }
@@ -191,10 +191,10 @@ static long cmm_free_pages(long nr)
                        break;
                plpar_page_set_active(page);
                list_del(&page->lru);
+               adjust_managed_page_count(page, 1);
                __free_page(page);
                loaned_pages--;
                nr--;
-               totalram_pages_inc();
        }
        spin_unlock(&cmm_lock);
        cmm_dbg("End request with %ld pages unfulfilled\n", nr);
@@ -518,10 +518,10 @@ static int cmm_mem_going_offline(void *arg)
                        continue;
                plpar_page_set_active(page);
                list_del(&page->lru);
+               adjust_managed_page_count(page, 1);
                __free_page(page);
                freed++;
                loaned_pages--;
-               totalram_pages_inc();
        }
 
        spin_unlock(&cmm_lock);
-- 
2.21.0