From 39ade048a32ea653b94dcfbf816b0b13a6be8a33 Mon Sep 17 00:00:00 2001 From: "Fabio M. De Francesco" Date: Wed, 6 Jul 2022 13:15:19 +0200 Subject: highmem: Make __kunmap_{local,atomic}() take const void pointer __kunmap_ {local,atomic}() currently take pointers to void. However, this is semantically incorrect, since these functions do not change the memory their arguments point to. Therefore, make this semantics explicit by modifying the __kunmap_{local,atomic}() prototypes to take pointers to const void. As a side effect, compilers may produce more efficient code. Acked-by: Andrew Morton Acked-by: Helge Deller # parisc Suggested-by: David Sterba Suggested-by: Ira Weiny Reviewed-by: Ira Weiny Signed-off-by: Fabio M. De Francesco Reviewed-by: David Sterba Signed-off-by: David Sterba --- mm/highmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'mm/highmem.c') diff --git a/mm/highmem.c b/mm/highmem.c index 1a692997fac4..e32083e4ce0d 100644 --- a/mm/highmem.c +++ b/mm/highmem.c @@ -561,7 +561,7 @@ void *__kmap_local_page_prot(struct page *page, pgprot_t prot) } EXPORT_SYMBOL(__kmap_local_page_prot); -void kunmap_local_indexed(void *vaddr) +void kunmap_local_indexed(const void *vaddr) { unsigned long addr = (unsigned long) vaddr & PAGE_MASK; pte_t *kmap_pte; -- cgit v1.2.3