mm: remove obsolete macro NR_PCP_ORDER_MASK and NR_PCP_ORDER_WIDTH

Since commit 11ec34fe42d7 ("mm/page_alloc: free pages in a single pass
during bulk free"), they're not used anymore.  Remove them.

Link: https://lkml.kernel.org/r/20220916072257.9639-4-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index c69c081568227a274faf43a518f53b699f6e1370..3ff1e757d5aab8b6d97854c79de5df574644e90b 100644 (file)
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -564,13 +564,6 @@ enum zone_watermarks {
 #define NR_LOWORDER_PCP_LISTS (MIGRATE_PCPTYPES * (PAGE_ALLOC_COSTLY_ORDER + 1))
 #define NR_PCP_LISTS (NR_LOWORDER_PCP_LISTS + NR_PCP_THP)
 
-/*
- * Shift to encode migratetype and order in the same integer, with order
- * in the least significant bits.
- */
-#define NR_PCP_ORDER_WIDTH 8
-#define NR_PCP_ORDER_MASK ((1<<NR_PCP_ORDER_WIDTH) - 1)
-
 #define min_wmark_pages(z) (z->_watermark[WMARK_MIN] + z->watermark_boost)
 #define low_wmark_pages(z) (z->_watermark[WMARK_LOW] + z->watermark_boost)
 #define high_wmark_pages(z) (z->_watermark[WMARK_HIGH] + z->watermark_boost)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 49efaf9963d1c546a9d416055774065046c37c0d..fa3dd2e1d5664ab8f02ad30303fc7e2163f9fabc 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1584,7 +1584,6 @@ static void free_pcppages_bulk(struct zone *zone, int count,
 
                order = pindex_to_order(pindex);
                nr_pages = 1 << order;
-               BUILD_BUG_ON(MAX_ORDER >= (1<<NR_PCP_ORDER_WIDTH));
                do {
                        int mt;