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Subject[PATCH] Fix up slabinfo code
Move printing the header to s_start, removing the need for the special 
pointer value.

--
Brian Gerst
diff -urN linux-2.5.62-bk2/mm/slab.c linux/mm/slab.c
--- linux-2.5.62-bk2/mm/slab.c 2003-02-18 01:30:26.000000000 -0500
+++ linux/mm/slab.c 2003-02-22 11:45:35.000000000 -0500
@@ -2194,10 +2194,19 @@
struct list_head *p;

down(&cache_chain_sem);
- if (!n)
- return (void *)1;
+ if (!n) {
+ /*
+ * Output format version, so at least we can change it
+ * without _too_ many complaints.
+ */
+ seq_puts(m, "slabinfo - version: 1.2"
+#if STATS
+ " (statistics)"
+#endif
+ "\n");
+ }
p = cache_chain.next;
- while (--n) {
+ while (n--) {
p = p->next;
if (p == &cache_chain)
return NULL;
@@ -2209,8 +2218,6 @@
{
kmem_cache_t *cachep = p;
++*pos;
- if (p == (void *)1)
- return list_entry(cache_chain.next, kmem_cache_t, next);
return cachep->next.next == &cache_chain ? NULL
: list_entry(cachep->next.next, kmem_cache_t, next);
}
@@ -2234,20 +2241,6 @@
mm_segment_t old_fs;
char tmp;

-
- if (p == (void*)1) {
- /*
- * Output format version, so at least we can change it
- * without _too_ many complaints.
- */
- seq_puts(m, "slabinfo - version: 1.2"
-#if STATS
- " (statistics)"
-#endif
- "\n");
- return 0;
- }
-
check_irq_on();
spin_lock_irq(&cachep->spinlock);
active_objs = 0;
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