mm: accept to promo watermark

Commit c574bbe91703 ("NUMA balancing: optimize page placement for memory
tiering system") introduced a new watermark above "high" -- "promo".

Accept memory memory to the highest watermark which is WMARK_PROMO now.

Link: https://lkml.kernel.org/r/20240809114854.3745464-9-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Hildenbrand <david@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 927f4e111273fd2f991b658de3864063af923ccb..56a93805561aa382dda9374f2b2a76e92d5736db 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -7001,8 +7001,8 @@ static bool cond_accept_memory(struct zone *zone, unsigned int order)
        if (list_empty(&zone->unaccepted_pages))
                return false;
 
-       /* How much to accept to get to high watermark? */
-       to_accept = high_wmark_pages(zone) -
+       /* How much to accept to get to promo watermark? */
+       to_accept = promo_wmark_pages(zone) -
                    (zone_page_state(zone, NR_FREE_PAGES) -
                    __zone_watermark_unusable_free(zone, order, 0) -
                    zone_page_state(zone, NR_UNACCEPTED));