lib/dump_stack: correct kernel-doc notation

[linux-2.6-microblaze.git] / mm / slub.c

diff --git a/mm/slub.c b/mm/slub.c
index 5c2a13d..f77d8cd 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1400,12 +1400,13 @@ check_slabs:
 static int __init setup_slub_debug(char *str)
 {
        slab_flags_t flags;
+       slab_flags_t global_flags;
        char *saved_str;
        char *slab_list;
        bool global_slub_debug_changed = false;
        bool slab_list_specified = false;
 
-       slub_debug = DEBUG_DEFAULT_FLAGS;
+       global_flags = DEBUG_DEFAULT_FLAGS;
        if (*str++ != '=' || !*str)
                /*
                 * No options specified. Switch on full debugging.
@@ -1417,7 +1418,7 @@ static int __init setup_slub_debug(char *str)
                str = parse_slub_debug_flags(str, &flags, &slab_list, true);
 
                if (!slab_list) {
-                       slub_debug = flags;
+                       global_flags = flags;
                        global_slub_debug_changed = true;
                } else {
                        slab_list_specified = true;
@@ -1426,16 +1427,18 @@ static int __init setup_slub_debug(char *str)
 
        /*
         * For backwards compatibility, a single list of flags with list of
-        * slabs means debugging is only enabled for those slabs, so the global
-        * slub_debug should be 0. We can extended that to multiple lists as
+        * slabs means debugging is only changed for those slabs, so the global
+        * slub_debug should be unchanged (0 or DEBUG_DEFAULT_FLAGS, depending
+        * on CONFIG_SLUB_DEBUG_ON). We can extended that to multiple lists as
         * long as there is no option specifying flags without a slab list.
         */
        if (slab_list_specified) {
                if (!global_slub_debug_changed)
-                       slub_debug = 0;
+                       global_flags = slub_debug;
                slub_debug_string = saved_str;
        }
 out:
+       slub_debug = global_flags;
        if (slub_debug != 0 || slub_debug_string)
                static_branch_enable(&slub_debug_enabled);
        else