slub: fix shadowed variable sparse warnings

Introduce 'len' at outer level:
mm/slub.c:3406:26: warning: symbol 'n' shadows an earlier one
mm/slub.c:3393:6: originally declared here

No need to declare new node:
mm/slub.c:3501:7: warning: symbol 'node' shadows an earlier one
mm/slub.c:3491:6: originally declared here

No need to declare new x:
mm/slub.c:3513:9: warning: symbol 'x' shadows an earlier one
mm/slub.c:3492:6: originally declared here

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Christoph Lameter <clameter@sgi.com>

diff --git a/mm/slub.c b/mm/slub.c
index 5cc4b7dddb505dc08a9a05bdfeb2cc1f91faf9c2..93f5c288f02452d239924ba76f42be51ba10d88d 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3390,7 +3390,7 @@ static void process_slab(struct loc_track *t, struct kmem_cache *s,
 static int list_locations(struct kmem_cache *s, char *buf,
                                        enum track_item alloc)
 {
-       int n = 0;
+       int len = 0;
        unsigned long i;
        struct loc_track t = { 0, 0, NULL };
        int node;
@@ -3421,54 +3421,54 @@ static int list_locations(struct kmem_cache *s, char *buf,
        for (i = 0; i < t.count; i++) {
                struct location *l = &t.loc[i];
 
-               if (n > PAGE_SIZE - 100)
+               if (len > PAGE_SIZE - 100)
                        break;
-               n += sprintf(buf + n, "%7ld ", l->count);
+               len += sprintf(buf + len, "%7ld ", l->count);
 
                if (l->addr)
-                       n += sprint_symbol(buf + n, (unsigned long)l->addr);
+                       len += sprint_symbol(buf + len, (unsigned long)l->addr);
                else
-                       n += sprintf(buf + n, "<not-available>");
+                       len += sprintf(buf + len, "<not-available>");
 
                if (l->sum_time != l->min_time) {
                        unsigned long remainder;
 
-                       n += sprintf(buf + n, " age=%ld/%ld/%ld",
+                       len += sprintf(buf + len, " age=%ld/%ld/%ld",
                        l->min_time,
                        div_long_long_rem(l->sum_time, l->count, &remainder),
                        l->max_time);
                } else
-                       n += sprintf(buf + n, " age=%ld",
+                       len += sprintf(buf + len, " age=%ld",
                                l->min_time);
 
                if (l->min_pid != l->max_pid)
-                       n += sprintf(buf + n, " pid=%ld-%ld",
+                       len += sprintf(buf + len, " pid=%ld-%ld",
                                l->min_pid, l->max_pid);
                else
-                       n += sprintf(buf + n, " pid=%ld",
+                       len += sprintf(buf + len, " pid=%ld",
                                l->min_pid);
 
                if (num_online_cpus() > 1 && !cpus_empty(l->cpus) &&
-                               n < PAGE_SIZE - 60) {
-                       n += sprintf(buf + n, " cpus=");
-                       n += cpulist_scnprintf(buf + n, PAGE_SIZE - n - 50,
+                               len < PAGE_SIZE - 60) {
+                       len += sprintf(buf + len, " cpus=");
+                       len += cpulist_scnprintf(buf + len, PAGE_SIZE - len - 50,
                                        l->cpus);
                }
 
                if (num_online_nodes() > 1 && !nodes_empty(l->nodes) &&
-                               n < PAGE_SIZE - 60) {
-                       n += sprintf(buf + n, " nodes=");
-                       n += nodelist_scnprintf(buf + n, PAGE_SIZE - n - 50,
+                               len < PAGE_SIZE - 60) {
+                       len += sprintf(buf + len, " nodes=");
+                       len += nodelist_scnprintf(buf + len, PAGE_SIZE - len - 50,
                                        l->nodes);
                }
 
-               n += sprintf(buf + n, "\n");
+               len += sprintf(buf + len, "\n");
        }
 
        free_loc_track(&t);
        if (!t.count)
-               n += sprintf(buf, "No data\n");
-       return n;
+               len += sprintf(buf, "No data\n");
+       return len;
 }
 
 enum slab_stat_type {
@@ -3498,7 +3498,6 @@ static unsigned long slab_objects(struct kmem_cache *s,
 
        for_each_possible_cpu(cpu) {
                struct page *page;
-               int node;
                struct kmem_cache_cpu *c = get_cpu_slab(s, cpu);
 
                if (!c)
@@ -3510,8 +3509,6 @@ static unsigned long slab_objects(struct kmem_cache *s,
                        continue;
                if (page) {
                        if (flags & SO_CPU) {
-                               int x = 0;
-
                                if (flags & SO_OBJECTS)
                                        x = page->inuse;
                                else