Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
  mm: SLOB fix reclaim_state
  mm: SLUB fix reclaim_state
  slub: add Documentation/ABI/testing/sysfs-kernel-slab
  slub: enforce MAX_ORDER

2 files changed, 9 insertions, 2 deletions

diff --git a/mm/slob.c b/mm/slob.c
index a2d4ab32198d..f92e66d558bd 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -60,6 +60,7 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/mm.h>
+#include <linux/swap.h> /* struct reclaim_state */
 #include <linux/cache.h>
 #include <linux/init.h>
 #include <linux/module.h>
@@ -255,6 +256,8 @@ static void *slob_new_pages(gfp_t gfp, int order, int node)
 
 static void slob_free_pages(void *b, int order)
 {
+        if (current->reclaim_state)
+                current->reclaim_state->reclaimed_slab += 1 << order;
         free_pages((unsigned long)b, order);
 }
 
@@ -407,7 +410,7 @@ static void slob_free(void *block, int size)
                 spin_unlock_irqrestore(&slob_lock, flags);
                 clear_slob_page(sp);
                 free_slob_page(sp);
-                free_page((unsigned long)b);
+                slob_free_pages(b, 0);
                 return;
         }
 
diff --git a/mm/slub.c b/mm/slub.c
index 7ab54ecbd3f3..65ffda5934b0 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/mm.h>
+#include <linux/swap.h> /* struct reclaim_state */
 #include <linux/module.h>
 #include <linux/bit_spinlock.h>
 #include <linux/interrupt.h>
@@ -1170,6 +1171,8 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
 
         __ClearPageSlab(page);
         reset_page_mapcount(page);
+        if (current->reclaim_state)
+                current->reclaim_state->reclaimed_slab += pages;
         __free_pages(page, order);
 }
 
@@ -1909,7 +1912,7 @@ static inline int calculate_order(int size)
          * Doh this slab cannot be placed using slub_max_order.
          */
         order = slab_order(size, 1, MAX_ORDER, 1);
-        if (order <= MAX_ORDER)
+        if (order < MAX_ORDER)
                 return order;
         return -ENOSYS;
 }
@@ -2522,6 +2525,7 @@ __setup("slub_min_order=", setup_slub_min_order);
 static int __init setup_slub_max_order(char *str)
 {
         get_option(&str, &slub_max_order);
+        slub_max_order = min(slub_max_order, MAX_ORDER - 1);
 
         return 1;
 }