linux-kernel - [PATCH 35/45] arch/s390: Skip hugetlb vmas in thp_split

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Message-ID: <20240704043132.28501-36-osalvador@suse.de>
Date: Thu,  4 Jul 2024 06:31:22 +0200
From: Oscar Salvador <osalvador@...e.de>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org,
	linux-mm@...ck.org,
	Peter Xu <peterx@...hat.com>,
	Muchun Song <muchun.song@...ux.dev>,
	David Hildenbrand <david@...hat.com>,
	SeongJae Park <sj@...nel.org>,
	Miaohe Lin <linmiaohe@...wei.com>,
	Michal Hocko <mhocko@...e.com>,
	Matthew Wilcox <willy@...radead.org>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Oscar Salvador <osalvador@...e.de>
Subject: [PATCH 35/45] arch/s390: Skip hugetlb vmas in thp_split_mm

Skip hugetlb vmas as we are not interested in those.

Signed-off-by: Oscar Salvador <osalvador@...e.de>
---
 arch/s390/mm/gmap.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c
index e1d098dc7f07..580e4ab6f018 100644
--- a/arch/s390/mm/gmap.c
+++ b/arch/s390/mm/gmap.c
@@ -2538,6 +2538,8 @@ static inline void thp_split_mm(struct mm_struct *mm)
 	VMA_ITERATOR(vmi, mm, 0);
 
 	for_each_vma(vmi, vma) {
+		if (is_vm_hugetlb_page(vma))
+			continue;
 		vm_flags_mod(vma, VM_NOHUGEPAGE, VM_HUGEPAGE);
 		walk_page_vma(vma, &thp_split_walk_ops, NULL);
 	}
-- 
2.26.2