linux-kernel - [PATCH v2] pagevec.h: add `const` to pointer parameters of getter functions

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Message-ID: <20250828130311.772993-1-max.kellermann@ionos.com>
Date: Thu, 28 Aug 2025 15:03:11 +0200
From: Max Kellermann <max.kellermann@...os.com>
To: akpm@...ux-foundation.org,
	david@...hat.com,
	lorenzo.stoakes@...cle.com,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Cc: Max Kellermann <max.kellermann@...os.com>
Subject: [PATCH v2] pagevec.h: add `const` to pointer parameters of getter functions

For improved const-correctness.

Signed-off-by: Max Kellermann <max.kellermann@...os.com>
---
v1->v2: reduced patch to just pagevec.h upon David Hildenbrand's suggestion
---
 include/linux/pagevec.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/pagevec.h b/include/linux/pagevec.h
index 5d3a0cccc6bf..63be5a451627 100644
--- a/include/linux/pagevec.h
+++ b/include/linux/pagevec.h
@@ -51,12 +51,12 @@ static inline void folio_batch_reinit(struct folio_batch *fbatch)
 	fbatch->i = 0;
 }
 
-static inline unsigned int folio_batch_count(struct folio_batch *fbatch)
+static inline unsigned int folio_batch_count(const struct folio_batch *fbatch)
 {
 	return fbatch->nr;
 }
 
-static inline unsigned int folio_batch_space(struct folio_batch *fbatch)
+static inline unsigned int folio_batch_space(const struct folio_batch *fbatch)
 {
 	return PAGEVEC_SIZE - fbatch->nr;
 }
-- 
2.47.2