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From:   Pavel Tatashin <pasha.tatashin@soleen.com>
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Subject: [PATCH v3 1/6] mm/gup: don't pin migrated cma pages in movable zone
Date:   Fri, 11 Dec 2020 15:21:35 -0500
Message-Id: <20201211202140.396852-2-pasha.tatashin@soleen.com>
In-Reply-To: <20201211202140.396852-1-pasha.tatashin@soleen.com>
References: <20201211202140.396852-1-pasha.tatashin@soleen.com>
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In order not to fragment CMA the pinned pages are migrated. However,
they are migrated to ZONE_MOVABLE, which also should not have pinned pages.

Remove __GFP_MOVABLE, so pages can be migrated to zones where pinning
is allowed.

Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Acked-by: Michal Hocko <mhocko@suse.com>
---
 mm/gup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/gup.c b/mm/gup.c
index 0c866af5d96f..87452fcad048 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1565,7 +1565,7 @@ static long check_and_migrate_cma_pages(struct mm_struct *mm,
 	long ret = nr_pages;
 	struct migration_target_control mtc = {
 		.nid = NUMA_NO_NODE,
-		.gfp_mask = GFP_USER | __GFP_MOVABLE | __GFP_NOWARN,
+		.gfp_mask = GFP_USER | __GFP_NOWARN,
 	};
 
 check_again:
-- 
2.25.1