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Subject[PATCHv2] slub: fix shadowed variable sparse warnings
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Date
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>
---
mm/slub.c | 39 ++++++++++++++++++---------------------
1 files changed, 18 insertions(+), 21 deletions(-)

diff --git a/mm/slub.c b/mm/slub.c
index 5cc4b7d..93f5c28 100644
--- 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
--
1.5.4.rc4.1142.gf5a97




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