Those strings are immutable in fact. Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx> --- include/linux/mmzone.h | 2 +- mm/page_alloc.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -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) --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -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",