From eb2e2b425c6984ca8034448a3f2c680622bd3d4d Mon Sep 17 00:00:00 2001
From: Mel Gorman <mgorman@techsingularity.net>
Date: Fri, 13 Jan 2023 11:12:14 +0000
Subject: mm/page_alloc: explicitly record high-order atomic allocations in
 alloc_flags

A high-order ALLOC_HARDER allocation is assumed to be atomic.  While that
is accurate, it changes later in the series.  In preparation, explicitly
record high-order atomic allocations in gfp_to_alloc_flags().

Link: https://lkml.kernel.org/r/20230113111217.14134-4-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: NeilBrown <neilb@suse.de>
Cc: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 mm/internal.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'mm/internal.h')

diff --git a/mm/internal.h b/mm/internal.h
index 99eb544fbded..62428467d7cf 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -789,6 +789,7 @@ unsigned int reclaim_clean_pages_from_list(struct zone *zone,
 #else
 #define ALLOC_NOFRAGMENT	  0x0
 #endif
+#define ALLOC_HIGHATOMIC	0x200 /* Allows access to MIGRATE_HIGHATOMIC */
 #define ALLOC_KSWAPD		0x800 /* allow waking of kswapd, __GFP_KSWAPD_RECLAIM set */
 
 enum ttu_flags;
-- 
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