linux-kernel - [RFC PATCH 7/9] mm/migrate: rename rmap_walk

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Message-Id: <20250724084441.380404-8-link@vivo.com>
Date: Thu, 24 Jul 2025 16:44:35 +0800
From: Huan Yang <link@...o.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
	David Hildenbrand <david@...hat.com>,
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	Rik van Riel <riel@...riel.com>,
	"Liam R. Howlett" <Liam.Howlett@...cle.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	Harry Yoo <harry.yoo@...cle.com>,
	Xu Xin <xu.xin16@....com.cn>,
	Chengming Zhou <chengming.zhou@...ux.dev>,
	Mike Rapoport <rppt@...nel.org>,
	Suren Baghdasaryan <surenb@...gle.com>,
	Michal Hocko <mhocko@...e.com>,
	Zi Yan <ziy@...dia.com>,
	Matthew Brost <matthew.brost@...el.com>,
	Joshua Hahn <joshua.hahnjy@...il.com>,
	Rakie Kim <rakie.kim@...com>,
	Byungchul Park <byungchul@...com>,
	Gregory Price <gourry@...rry.net>,
	Ying Huang <ying.huang@...ux.alibaba.com>,
	Alistair Popple <apopple@...dia.com>,
	"Matthew Wilcox (Oracle)" <willy@...radead.org>,
	Huan Yang <link@...o.com>,
	Christian Brauner <brauner@...nel.org>,
	Usama Arif <usamaarif642@...il.com>,
	Yu Zhao <yuzhao@...gle.com>,
	Baolin Wang <baolin.wang@...ux.alibaba.com>,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [RFC PATCH 7/9] mm/migrate: rename rmap_walk_arg folio

The current naming of "folio" in rmap_walk_arg does not clearly reflect
the actual role of this parameter. This patch renames it to "src" to
distinguish it from the "folio" parameter in remove_migration_pte.

No functional change.

Signed-off-by: Huan Yang <link@...o.com>
---
 mm/migrate.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/migrate.c b/mm/migrate.c
index a5a49af7857a..a5ea8fba2997 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -230,7 +230,7 @@ static bool try_to_map_unused_to_zeropage(struct page_vma_mapped_walk *pvmw,
 }
 
 struct rmap_walk_arg {
-	struct folio *folio;
+	struct folio *src;
 	bool map_unused_to_zeropage;
 };
 
@@ -241,7 +241,7 @@ static bool remove_migration_pte(struct folio *folio,
 		struct vm_area_struct *vma, unsigned long addr, void *arg)
 {
 	struct rmap_walk_arg *rmap_walk_arg = arg;
-	DEFINE_FOLIO_VMA_WALK(pvmw, rmap_walk_arg->folio, vma, addr, PVMW_SYNC | PVMW_MIGRATION);
+	DEFINE_FOLIO_VMA_WALK(pvmw, rmap_walk_arg->src, vma, addr, PVMW_SYNC | PVMW_MIGRATION);
 
 	while (page_vma_mapped_walk(&pvmw)) {
 		rmap_t rmap_flags = RMAP_NONE;
@@ -349,7 +349,7 @@ static bool remove_migration_pte(struct folio *folio,
 void remove_migration_ptes(struct folio *src, struct folio *dst, int flags)
 {
 	struct rmap_walk_arg rmap_walk_arg = {
-		.folio = src,
+		.src = src,
 		.map_unused_to_zeropage = flags & RMP_USE_SHARED_ZEROPAGE,
 	};
 
-- 
2.34.1