mm: make "migrate_reason_names[]" const char *

Those strings are immutable as well.

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

---

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

include/linux/migrate.h +1 -1

@@ -29,7 +29,7 @@ enum migrate_reason {
 };
 
 /* In mm/debug.c; also keep sync with include/trace/events/migrate.h */
-extern char *migrate_reason_names[MR_TYPES];
+extern const char *migrate_reason_names[MR_TYPES];
 
 static inline struct page *new_page_nodemask(struct page *page,
 				int preferred_nid, nodemask_t *nodemask)

mm/debug.c +1 -1

@@ -17,7 +17,7 @@
 
 #include "internal.h"
 
-char *migrate_reason_names[MR_TYPES] = {
+const char *migrate_reason_names[MR_TYPES] = {
 	"compaction",
 	"memory_failure",
 	"memory_hotplug",

Those strings are immutable as well.

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

---

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

include/linux/migrate.h +1 -1

@@ -29,7 +29,7 @@ enum migrate_reason {
 };
 
 /* In mm/debug.c; also keep sync with include/trace/events/migrate.h */
-extern char *migrate_reason_names[MR_TYPES];
+extern const char *migrate_reason_names[MR_TYPES];
 
 static inline struct page *new_page_nodemask(struct page *page,
 				int preferred_nid, nodemask_t *nodemask)