mm: make "migratetype_names" const char *

PATCH New Alexey Dobriyan 1 participant 1 message Nov 24, 2018

Subsystems (4)

Memory management MM core Page allocator MGLRU

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Alexey Dobriyan

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2018-11-24 09:03 UTC #0 lore raw

PATCH 1/1 mm: make "migratetype_names" const char *

Those strings are immutable in fact.

Signed-off-by Alexey Dobriyan <[email protected]>

---

 include/linux/mmzone.h |    2 +-
 mm/page_alloc.c        |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

include/linux/mmzone.h +1 -1

@@ -65,7 +65,7 @@ enum migratetype {
 };
 
 /* In mm/page_alloc.c; keep in sync also with show_migration_types() there */
-extern char * const migratetype_names[MIGRATE_TYPES];
+extern const char * const migratetype_names[MIGRATE_TYPES];
 
 #ifdef CONFIG_CMA
 #  define is_migrate_cma(migratetype) unlikely((migratetype) == MIGRATE_CMA)

mm/page_alloc.c +1 -1

@@ -237,7 +237,7 @@ static char * const zone_names[MAX_NR_ZONES] = {
 #endif
 };
 
-char * const migratetype_names[MIGRATE_TYPES] = {
+const char * const migratetype_names[MIGRATE_TYPES] = {
 	"Unmovable",
 	"Movable",
 	"Reclaimable",