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-rw-r--r--mm/slub.c19
1 files changed, 10 insertions, 9 deletions
diff --git a/mm/slub.c b/mm/slub.c
index d4367f25b20d..de74c0e9985e 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -978,7 +978,7 @@ static slab_flags_t slub_debug = DEBUG_DEFAULT_FLAGS;
static slab_flags_t slub_debug;
#endif
-static char *slub_debug_string;
+static const char *slub_debug_string __ro_after_init;
static int disable_higher_order_debug;
/*
@@ -1785,8 +1785,8 @@ static inline int free_consistency_checks(struct kmem_cache *s,
*
* returns the start of next block if there's any, or NULL
*/
-static char *
-parse_slub_debug_flags(char *str, slab_flags_t *flags, char **slabs, bool init)
+static const char *
+parse_slub_debug_flags(const char *str, slab_flags_t *flags, const char **slabs, bool init)
{
bool higher_order_disable = false;
@@ -1863,14 +1863,15 @@ check_slabs:
return NULL;
}
-static int __init setup_slub_debug(char *str)
+static int __init setup_slub_debug(char *val)
{
slab_flags_t flags;
slab_flags_t global_flags;
- char *saved_str;
- char *slab_list;
+ const char *saved_str;
+ const char *slab_list;
bool global_slub_debug_changed = false;
bool slab_list_specified = false;
+ const char *str = val;
global_flags = DEBUG_DEFAULT_FLAGS;
if (*str++ != '=' || !*str)
@@ -1935,9 +1936,9 @@ __setup_param("slub_debug", slub_debug, setup_slub_debug, 0);
*/
slab_flags_t kmem_cache_flags(slab_flags_t flags, const char *name)
{
- char *iter;
+ const char *iter;
size_t len;
- char *next_block;
+ const char *next_block;
slab_flags_t block_flags;
slab_flags_t slub_debug_local = slub_debug;
@@ -1961,7 +1962,7 @@ slab_flags_t kmem_cache_flags(slab_flags_t flags, const char *name)
continue;
/* Found a block that has a slab list, search it */
while (*iter) {
- char *end, *glob;
+ const char *end, *glob;
size_t cmplen;
end = strchrnul(iter, ',');