7 files changed, 23 insertions, 27 deletions

diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index a11968bc0516..3462bfde89f6 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -410,7 +410,7 @@ static const struct file_operations proc_modules_operations = {
 };
 #endif
 
-#ifdef CONFIG_SLAB
+#ifdef CONFIG_SLABINFO
 static int slabinfo_open(struct inode *inode, struct file *file)
 {
         return seq_open(file, &slabinfo_op);
@@ -451,20 +451,6 @@ static const struct file_operations proc_slabstats_operations = {
 #endif
 #endif
 
-#ifdef CONFIG_SLUB
-static int slabinfo_open(struct inode *inode, struct file *file)
-{
-        return seq_open(file, &slabinfo_op);
-}
-
-static const struct file_operations proc_slabinfo_operations = {
-        .open           = slabinfo_open,
-        .read           = seq_read,
-        .llseek         = seq_lseek,
-        .release        = seq_release,
-};
-#endif
-
 static int show_stat(struct seq_file *p, void *v)
 {
         int i;
@@ -742,15 +728,12 @@ void __init proc_misc_init(void)
 #endif
         create_seq_entry("stat", 0, &proc_stat_operations);
         create_seq_entry("interrupts", 0, &proc_interrupts_operations);
-#ifdef CONFIG_SLAB
+#ifdef CONFIG_SLABINFO
         create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
 #ifdef CONFIG_DEBUG_SLAB_LEAK
         create_seq_entry("slab_allocators", 0 ,&proc_slabstats_operations);
 #endif
 #endif
-#ifdef CONFIG_SLUB
-        create_seq_entry("slabinfo", S_IWUSR|S_IRUGO, &proc_slabinfo_operations);
-#endif
         create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
         create_seq_entry("pagetypeinfo", S_IRUGO, &pagetypeinfo_file_ops);
         create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
diff --git a/include/linux/slab.h b/include/linux/slab.h
index f3a8eecd99f3..f62caaad94e0 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -271,5 +271,10 @@ static inline void *kzalloc(size_t size, gfp_t flags)
         return kmalloc(size, flags | __GFP_ZERO);
 }
 
+#ifdef CONFIG_SLABINFO
+extern const struct seq_operations slabinfo_op;
+ssize_t slabinfo_write(struct file *, const char __user *, size_t, loff_t *);
+#endif
+
 #endif  /* __KERNEL__ */
 #endif  /* _LINUX_SLAB_H */
diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h
index 32bdc2ffd715..fcc48096ee64 100644
--- a/include/linux/slab_def.h
+++ b/include/linux/slab_def.h
@@ -95,7 +95,4 @@ found:
 
 #endif  /* CONFIG_NUMA */
 
-extern const struct seq_operations slabinfo_op;
-ssize_t slabinfo_write(struct file *, const char __user *, size_t, loff_t *);
-
 #endif  /* _LINUX_SLAB_DEF_H */
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index b7d9408a00ff..40801e754afb 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -200,6 +200,4 @@ static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
 }
 #endif
 
-extern const struct seq_operations slabinfo_op;
-
 #endif /* _LINUX_SLUB_DEF_H */
diff --git a/init/Kconfig b/init/Kconfig
index 404bbf3699be..b9d11a899b88 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -658,6 +658,12 @@ endchoice
 
 endmenu         # General setup
 
+config SLABINFO
+        bool
+        depends on PROC_FS
+        depends on SLAB || SLUB
+        default y
+
 config RT_MUTEXES
         boolean
         select PLIST
diff --git a/mm/slab.c b/mm/slab.c
index 2e338a5f7b14..aebb9f68557a 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -4105,7 +4105,7 @@ out:
         schedule_delayed_work(work, round_jiffies_relative(REAPTIMEOUT_CPUC));
 }
 
-#ifdef CONFIG_PROC_FS
+#ifdef CONFIG_SLABINFO
 
 static void print_slabinfo_header(struct seq_file *m)
 {
diff --git a/mm/slub.c b/mm/slub.c
index 903dabd92daf..474945ecd89d 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -4127,7 +4127,14 @@ __initcall(slab_sysfs_init);
 /*
  * The /proc/slabinfo ABI
  */
-#ifdef CONFIG_PROC_FS
+#ifdef CONFIG_SLABINFO
+
+ssize_t slabinfo_write(struct file *file, const char __user * buffer,
+                       size_t count, loff_t *ppos)
+{
+        return -EINVAL;
+}
+
 
 static void print_slabinfo_header(struct seq_file *m)
 {
@@ -4201,4 +4208,4 @@ const struct seq_operations slabinfo_op = {
         .show = s_show,
 };
 
-#endif /* CONFIG_PROC_FS */
+#endif /* CONFIG_SLABINFO */