linux-kernel - [PATCH v2 6/6] mm/migrate_device: convert migrate_device

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Date: Fri, 16 Feb 2024 13:13:20 -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 6/6] mm/migrate_device: convert migrate_device_range() to folios

Use pfn_folio() to get a folio and use the folio equivalent page
functions throughout migrate_device_range().

Signed-off-by: Sidhartha Kumar <sidhartha.kumar@...cle.com>
---
 mm/migrate_device.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/mm/migrate_device.c b/mm/migrate_device.c
index 5c239de0f08b2..0c8d86851e631 100644
--- a/mm/migrate_device.c
+++ b/mm/migrate_device.c
@@ -888,16 +888,16 @@ int migrate_device_range(unsigned long *src_pfns, unsigned long start,
 	unsigned long i, pfn;
 
 	for (pfn = start, i = 0; i < npages; pfn++, i++) {
-		struct page *page = pfn_to_page(pfn);
+		struct folio *folio = pfn_folio(pfn);
 
-		if (!get_page_unless_zero(page)) {
+		if (!folio_try_get(folio)) {
 			src_pfns[i] = 0;
 			continue;
 		}
 
-		if (!trylock_page(page)) {
+		if (!folio_trylock(folio)) {
 			src_pfns[i] = 0;
-			put_page(page);
+			folio_put(folio);
 			continue;
 		}
 
-- 
2.42.0