[237/262] mm/damon/vaddr: constify static mm_walk_ops

Commit Message

Andrew Morton Nov. 5, 2021, 8:47 p.m. UTC

From: Rikard Falkeborn <[e-mail]>
Subject: mm/damon/vaddr: constify static mm_walk_ops

The only usage of these structs is to pass their addresses to
walk_page_range(), which takes a pointer to const mm_walk_ops as argument.
Make them const to allow the compiler to put them in read-only memory.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Rikard Falkeborn <[e-mail]>
Reviewed-by: SeongJae Park <[e-mail]>
Reviewed-by: Anshuman Khandual <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

 mm/damon/vaddr.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch

--- a/mm/damon/vaddr.c~mm-damon-vaddr-constify-static-mm_walk_ops
+++ a/mm/damon/vaddr.c
@@ -394,7 +394,7 @@  out:
 	return 0;
 }
 
-static struct mm_walk_ops damon_mkold_ops = {
+static const struct mm_walk_ops damon_mkold_ops = {
 	.pmd_entry = damon_mkold_pmd_entry,
 };
 
@@ -490,7 +490,7 @@  out:
 	return 0;
 }
 
-static struct mm_walk_ops damon_young_ops = {
+static const struct mm_walk_ops damon_young_ops = {
 	.pmd_entry = damon_young_pmd_entry,
 };