linux-kernel - [PATCH v2 1/6] mm/migrate: introduce migrate_pfn_to

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Date: Fri, 16 Feb 2024 13:13:15 -0800
From: Sidhartha Kumar <sidhartha.kumar@...cle.com>
To: linux-kernel@...r.kernel.org, linux-mm@...ck.org
Cc: akpm@...ux-foundation.org, willy@...radead.org, apopple@...dia.com,
        Sidhartha Kumar <sidhartha.kumar@...cle.com>
Subject: [PATCH v2 1/6] mm/migrate: introduce migrate_pfn_to_folio()

Add a folio compatible wrapper for migrate_pfn_to_page() so we can
return a folio directly.

Signed-off-by: Sidhartha Kumar <sidhartha.kumar@...cle.com>
Suggested-by: Alistair Popple <apopple@...dia.com>
---
 include/linux/migrate.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index 2ce13e8a309bd..21a1a5e415338 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -171,6 +171,11 @@ static inline struct page *migrate_pfn_to_page(unsigned long mpfn)
 	return pfn_to_page(mpfn >> MIGRATE_PFN_SHIFT);
 }
 
+static inline struct folio *migrate_pfn_to_folio(unsigned long mpfn)
+{
+	return page_folio(migrate_pfn_to_page(mpfn));
+}
+
 static inline unsigned long migrate_pfn(unsigned long pfn)
 {
 	return (pfn << MIGRATE_PFN_SHIFT) | MIGRATE_PFN_VALID;
-- 
2.42.0