Merge branch 'akpm' (incoming from Andrew)

Merge first batch of fixes from Andrew Morton:

 - A couple of kthread changes

 - A few minor audit patches

 - A number of fbdev patches.  Florian remains AWOL so I'm picking up
   some of these.

 - A few kbuild things

 - ocfs2 updates

 - Almost all of the MM queue

(And in the meantime, I already have the second big batch from Andrew
pending in my mailbox ;^)

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (149 commits)
  memcg: take reference before releasing rcu_read_lock
  mem hotunplug: fix kfree() of bootmem memory
  mmKconfig: add an option to disable bounce
  mm, nobootmem: do memset() after memblock_reserve()
  mm, nobootmem: clean-up of free_low_memory_core_early()
  fs/buffer.c: remove unnecessary init operation after allocating buffer_head.
  numa, cpu hotplug: change links of CPU and node when changing node number by onlining CPU
  mm: fix memory_hotplug.c printk format warning
  mm: swap: mark swap pages writeback before queueing for direct IO
  swap: redirty page if page write fails on swap file
  mm, memcg: give exiting processes access to memory reserves
  thp: fix huge zero page logic for page with pfn == 0
  memcg: avoid accessing memcg after releasing reference
  fs: fix fsync() error reporting
  memblock: fix missing comment of memblock_insert_region()
  mm: Remove unused parameter of pages_correctly_reserved()
  firmware, memmap: fix firmware_map_entry leak
  mm/vmstat: add note on safety of drain_zonestat
  mm: thp: add split tail pages to shrink page list in page reclaim
  mm: allow for outstanding swap writeback accounting
  ...

11 files changed, 239 insertions, 127 deletions

diff --git a/kernel/audit.c b/kernel/audit.c
index d596e5355f15..9816a1b96cfc 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -660,14 +660,14 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 
 	/* As soon as there's any sign of userspace auditd,
 	 * start kauditd to talk to it */
-	if (!kauditd_task)
+	if (!kauditd_task) {
 		kauditd_task = kthread_run(kauditd_thread, NULL, "kauditd");
-	if (IS_ERR(kauditd_task)) {
-		err = PTR_ERR(kauditd_task);
-		kauditd_task = NULL;
-		return err;
+		if (IS_ERR(kauditd_task)) {
+			err = PTR_ERR(kauditd_task);
+			kauditd_task = NULL;
+			return err;
+		}
 	}
-
 	loginuid = audit_get_loginuid(current);
 	sessionid = audit_get_sessionid(current);
 	security_task_getsecid(current, &sid);
diff --git a/kernel/audit.h b/kernel/audit.h
index d51cba868e1b..11468d99dad0 100644
--- a/kernel/audit.h
+++ b/kernel/audit.h
@@ -59,10 +59,7 @@ struct audit_entry {
 	struct audit_krule	rule;
 };
 
-#ifdef CONFIG_AUDIT
-extern int audit_enabled;
 extern int audit_ever_enabled;
-#endif
 
 extern int audit_pid;
 
diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c
index 642a89c4f3d6..a291aa23fb3f 100644
--- a/kernel/audit_tree.c
+++ b/kernel/audit_tree.c
@@ -617,9 +617,9 @@ void audit_trim_trees(void)
 		}
 		spin_unlock(&hash_lock);
 		trim_marked(tree);
-		put_tree(tree);
 		drop_collected_mounts(root_mnt);
 skip_it:
+		put_tree(tree);
 		mutex_lock(&audit_filter_mutex);
 	}
 	list_del(&cursor);
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index f9fc54bbe06f..267436826c3b 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -594,6 +594,10 @@ exit_nofree:
 	return entry;
 
 exit_free:
+	if (entry->rule.watch)
+		audit_put_watch(entry->rule.watch); /* matches initial get */
+	if (entry->rule.tree)
+		audit_put_tree(entry->rule.tree); /* that's the temporary one */
 	audit_free_rule(entry);
 	return ERR_PTR(err);
 }
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index a371f857a0a9..c68229411a7c 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -1034,21 +1034,15 @@ static inline void audit_free_aux(struct audit_context *context)
 	}
 }
 
-static inline void audit_zero_context(struct audit_context *context,
-				      enum audit_state state)
-{
-	memset(context, 0, sizeof(*context));
-	context->state      = state;
-	context->prio = state == AUDIT_RECORD_CONTEXT ? ~0ULL : 0;
-}
-
 static inline struct audit_context *audit_alloc_context(enum audit_state state)
 {
 	struct audit_context *context;
 
-	if (!(context = kmalloc(sizeof(*context), GFP_KERNEL)))
+	context = kzalloc(sizeof(*context), GFP_KERNEL);
+	if (!context)
 		return NULL;
-	audit_zero_context(context, state);
+	context->state = state;
+	context->prio = state == AUDIT_RECORD_CONTEXT ? ~0ULL : 0;
 	INIT_LIST_HEAD(&context->killed_trees);
 	INIT_LIST_HEAD(&context->names_list);
 	return context;
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index a32f9432666c..dfaf50d4705e 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -5416,55 +5416,6 @@ struct cgroup_subsys_state *css_lookup(struct cgroup_subsys *ss, int id)
 }
 EXPORT_SYMBOL_GPL(css_lookup);
 
-/**
- * css_get_next - lookup next cgroup under specified hierarchy.
- * @ss: pointer to subsystem
- * @id: current position of iteration.
- * @root: pointer to css. search tree under this.
- * @foundid: position of found object.
- *
- * Search next css under the specified hierarchy of rootid. Calling under
- * rcu_read_lock() is necessary. Returns NULL if it reaches the end.
- */
-struct cgroup_subsys_state *
-css_get_next(struct cgroup_subsys *ss, int id,
-	     struct cgroup_subsys_state *root, int *foundid)
-{
-	struct cgroup_subsys_state *ret = NULL;
-	struct css_id *tmp;
-	int tmpid;
-	int rootid = css_id(root);
-	int depth = css_depth(root);
-
-	if (!rootid)
-		return NULL;
-
-	BUG_ON(!ss->use_id);
-	WARN_ON_ONCE(!rcu_read_lock_held());
-
-	/* fill start point for scan */
-	tmpid = id;
-	while (1) {
-		/*
-		 * scan next entry from bitmap(tree), tmpid is updated after
-		 * idr_get_next().
-		 */
-		tmp = idr_get_next(&ss->idr, &tmpid);
-		if (!tmp)
-			break;
-		if (tmp->depth >= depth && tmp->stack[depth] == rootid) {
-			ret = rcu_dereference(tmp->css);
-			if (ret) {
-				*foundid = tmpid;
-				break;
-			}
-		}
-		/* continue to scan from next id */
-		tmpid = tmpid + 1;
-	}
-	return ret;
-}
-
 /*
  * get corresponding css from file open on cgroupfs directory
  */
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 4f9dfe43ecbd..334d983a36b2 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -2251,7 +2251,6 @@ void cpuset_update_active_cpus(bool cpu_online)
 	schedule_work(&cpuset_hotplug_work);
 }
 
-#ifdef CONFIG_MEMORY_HOTPLUG
 /*
  * Keep top_cpuset.mems_allowed tracking node_states[N_MEMORY].
  * Call this routine anytime after node_states[N_MEMORY] changes.
@@ -2263,20 +2262,23 @@ static int cpuset_track_online_nodes(struct notifier_block *self,
 	schedule_work(&cpuset_hotplug_work);
 	return NOTIFY_OK;
 }
-#endif
+
+static struct notifier_block cpuset_track_online_nodes_nb = {
+	.notifier_call = cpuset_track_online_nodes,
+	.priority = 10,		/* ??! */
+};
 
 /**
  * cpuset_init_smp - initialize cpus_allowed
  *
  * Description: Finish top cpuset after cpu, node maps are initialized
- **/
-
+ */
 void __init cpuset_init_smp(void)
 {
 	cpumask_copy(top_cpuset.cpus_allowed, cpu_active_mask);
 	top_cpuset.mems_allowed = node_states[N_MEMORY];
 
-	hotplug_memory_notifier(cpuset_track_online_nodes, 10);
+	register_hotmemory_notifier(&cpuset_track_online_nodes_nb);
 
 	cpuset_propagate_hotplug_wq =
 		alloc_ordered_workqueue("cpuset_hotplug", 0);
diff --git a/kernel/kexec.c b/kernel/kexec.c
index ffd4e111fd67..b574920cbd4b 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -1118,12 +1118,8 @@ void __weak crash_free_reserved_phys_range(unsigned long begin,
 {
 	unsigned long addr;
 
-	for (addr = begin; addr < end; addr += PAGE_SIZE) {
-		ClearPageReserved(pfn_to_page(addr >> PAGE_SHIFT));
-		init_page_count(pfn_to_page(addr >> PAGE_SHIFT));
-		free_page((unsigned long)__va(addr));
-		totalram_pages++;
-	}
+	for (addr = begin; addr < end; addr += PAGE_SIZE)
+		free_reserved_page(pfn_to_page(addr >> PAGE_SHIFT));
 }
 
 int crash_shrink_memory(unsigned long new_size)
@@ -1581,7 +1577,7 @@ static int __init crash_save_vmcoreinfo_init(void)
 	VMCOREINFO_SYMBOL(swapper_pg_dir);
 #endif
 	VMCOREINFO_SYMBOL(_stext);
-	VMCOREINFO_SYMBOL(vmlist);
+	VMCOREINFO_SYMBOL(vmap_area_list);
 
 #ifndef CONFIG_NEED_MULTIPLE_NODES
 	VMCOREINFO_SYMBOL(mem_map);
@@ -1619,7 +1615,8 @@ static int __init crash_save_vmcoreinfo_init(void)
 	VMCOREINFO_OFFSET(free_area, free_list);
 	VMCOREINFO_OFFSET(list_head, next);
 	VMCOREINFO_OFFSET(list_head, prev);
-	VMCOREINFO_OFFSET(vm_struct, addr);
+	VMCOREINFO_OFFSET(vmap_area, va_start);
+	VMCOREINFO_OFFSET(vmap_area, list);
 	VMCOREINFO_LENGTH(zone.free_area, MAX_ORDER);
 	log_buf_kexec_setup();
 	VMCOREINFO_LENGTH(free_area.free_list, MIGRATE_TYPES);
diff --git a/kernel/kthread.c b/kernel/kthread.c
index 9eb7fed0bbaa..9b12d65186f7 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -52,8 +52,21 @@ enum KTHREAD_BITS {
 	KTHREAD_IS_PARKED,
 };
 
-#define to_kthread(tsk)	\
-	container_of((tsk)->vfork_done, struct kthread, exited)
+#define __to_kthread(vfork)	\
+	container_of(vfork, struct kthread, exited)
+
+static inline struct kthread *to_kthread(struct task_struct *k)
+{
+	return __to_kthread(k->vfork_done);
+}
+
+static struct kthread *to_live_kthread(struct task_struct *k)
+{
+	struct completion *vfork = ACCESS_ONCE(k->vfork_done);
+	if (likely(vfork))
+		return __to_kthread(vfork);
+	return NULL;
+}
 
 /**
  * kthread_should_stop - should this kthread return now?
@@ -311,19 +324,6 @@ struct task_struct *kthread_create_on_cpu(int (*threadfn)(void *data),
 	return p;
 }
 
-static struct kthread *task_get_live_kthread(struct task_struct *k)
-{
-	struct kthread *kthread;
-
-	get_task_struct(k);
-	kthread = to_kthread(k);
-	/* It might have exited */
-	barrier();
-	if (k->vfork_done != NULL)
-		return kthread;
-	return NULL;
-}
-
 static void __kthread_unpark(struct task_struct *k, struct kthread *kthread)
 {
 	clear_bit(KTHREAD_SHOULD_PARK, &kthread->flags);
@@ -350,11 +350,10 @@ static void __kthread_unpark(struct task_struct *k, struct kthread *kthread)
  */
 void kthread_unpark(struct task_struct *k)
 {
-	struct kthread *kthread = task_get_live_kthread(k);
+	struct kthread *kthread = to_live_kthread(k);
 
 	if (kthread)
 		__kthread_unpark(k, kthread);
-	put_task_struct(k);
 }
 
 /**
@@ -371,7 +370,7 @@ void kthread_unpark(struct task_struct *k)
  */
 int kthread_park(struct task_struct *k)
 {
-	struct kthread *kthread = task_get_live_kthread(k);
+	struct kthread *kthread = to_live_kthread(k);
 	int ret = -ENOSYS;
 
 	if (kthread) {
@@ -384,7 +383,6 @@ int kthread_park(struct task_struct *k)
 		}
 		ret = 0;
 	}
-	put_task_struct(k);
 	return ret;
 }
 
@@ -405,10 +403,13 @@ int kthread_park(struct task_struct *k)
  */
 int kthread_stop(struct task_struct *k)
 {
-	struct kthread *kthread = task_get_live_kthread(k);
+	struct kthread *kthread;
 	int ret;
 
 	trace_sched_kthread_stop(k);
+
+	get_task_struct(k);
+	kthread = to_live_kthread(k);
 	if (kthread) {
 		set_bit(KTHREAD_SHOULD_STOP, &kthread->flags);
 		__kthread_unpark(k, kthread);
@@ -416,10 +417,9 @@ int kthread_stop(struct task_struct *k)
 		wait_for_completion(&kthread->exited);
 	}
 	ret = k->exit_code;
-
 	put_task_struct(k);
-	trace_sched_kthread_stop_ret(ret);
 
+	trace_sched_kthread_stop_ret(ret);
 	return ret;
 }
 EXPORT_SYMBOL(kthread_stop);
diff --git a/kernel/resource.c b/kernel/resource.c
index 73f35d4b30b9..d7386986e10e 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -21,6 +21,7 @@
 #include <linux/seq_file.h>
 #include <linux/device.h>
 #include <linux/pfn.h>
+#include <linux/mm.h>
 #include <asm/io.h>
 
 
@@ -50,6 +51,14 @@ struct resource_constraint {
 
 static DEFINE_RWLOCK(resource_lock);
 
+/*
+ * For memory hotplug, there is no way to free resource entries allocated
+ * by boot mem after the system is up. So for reusing the resource entry
+ * we need to remember the resource.
+ */
+static struct resource *bootmem_resource_free;
+static DEFINE_SPINLOCK(bootmem_resource_lock);
+
 static void *r_next(struct seq_file *m, void *v, loff_t *pos)
 {
 	struct resource *p = v;
@@ -151,6 +160,40 @@ __initcall(ioresources_init);
 
 #endif /* CONFIG_PROC_FS */
 
+static void free_resource(struct resource *res)
+{
+	if (!res)
+		return;
+
+	if (!PageSlab(virt_to_head_page(res))) {
+		spin_lock(&bootmem_resource_lock);
+		res->sibling = bootmem_resource_free;
+		bootmem_resource_free = res;
+		spin_unlock(&bootmem_resource_lock);
+	} else {
+		kfree(res);
+	}
+}
+
+static struct resource *alloc_resource(gfp_t flags)
+{
+	struct resource *res = NULL;
+
+	spin_lock(&bootmem_resource_lock);
+	if (bootmem_resource_free) {
+		res = bootmem_resource_free;
+		bootmem_resource_free = res->sibling;
+	}
+	spin_unlock(&bootmem_resource_lock);
+
+	if (res)
+		memset(res, 0, sizeof(struct resource));
+	else
+		res = kzalloc(sizeof(struct resource), flags);
+
+	return res;
+}
+
 /* Return the conflict entry if you can't request it */
 static struct resource * __request_resource(struct resource *root, struct resource *new)
 {
@@ -706,24 +749,13 @@ void insert_resource_expand_to_fit(struct resource *root, struct resource *new)
 	write_unlock(&resource_lock);
 }
 
-/**
- * adjust_resource - modify a resource's start and size
- * @res: resource to modify
- * @start: new start value
- * @size: new size
- *
- * Given an existing resource, change its start and size to match the
- * arguments.  Returns 0 on success, -EBUSY if it can't fit.
- * Existing children of the resource are assumed to be immutable.
- */
-int adjust_resource(struct resource *res, resource_size_t start, resource_size_t size)
+static int __adjust_resource(struct resource *res, resource_size_t start,
+				resource_size_t size)
 {
 	struct resource *tmp, *parent = res->parent;
 	resource_size_t end = start + size - 1;
 	int result = -EBUSY;
 
-	write_lock(&resource_lock);
-
 	if (!parent)
 		goto skip;
 
@@ -751,6 +783,26 @@ skip:
 	result = 0;
 
  out:
+	return result;
+}
+
+/**
+ * adjust_resource - modify a resource's start and size
+ * @res: resource to modify
+ * @start: new start value
+ * @size: new size
+ *
+ * Given an existing resource, change its start and size to match the
+ * arguments.  Returns 0 on success, -EBUSY if it can't fit.
+ * Existing children of the resource are assumed to be immutable.
+ */
+int adjust_resource(struct resource *res, resource_size_t start,
+			resource_size_t size)
+{
+	int result;
+
+	write_lock(&resource_lock);
+	result = __adjust_resource(res, start, size);
 	write_unlock(&resource_lock);
 	return result;
 }
@@ -762,7 +814,7 @@ static void __init __reserve_region_with_split(struct resource *root,
 {
 	struct resource *parent = root;
 	struct resource *conflict;
-	struct resource *res = kzalloc(sizeof(*res), GFP_ATOMIC);
+	struct resource *res = alloc_resource(GFP_ATOMIC);
 	struct resource *next_res = NULL;
 
 	if (!res)
@@ -787,7 +839,7 @@ static void __init __reserve_region_with_split(struct resource *root,
 		/* conflict covered whole area */
 		if (conflict->start <= res->start &&
 				conflict->end >= res->end) {
-			kfree(res);
+			free_resource(res);
 			WARN_ON(next_res);
 			break;
 		}
@@ -797,10 +849,9 @@ static void __init __reserve_region_with_split(struct resource *root,
 			end = res->end;
 			res->end = conflict->start - 1;
 			if (conflict->end < end) {
-				next_res = kzalloc(sizeof(*next_res),
-						GFP_ATOMIC);
+				next_res = alloc_resource(GFP_ATOMIC);
 				if (!next_res) {
-					kfree(res);
+					free_resource(res);
 					break;
 				}
 				next_res->name = name;
@@ -890,7 +941,7 @@ struct resource * __request_region(struct resource *parent,
 				   const char *name, int flags)
 {
 	DECLARE_WAITQUEUE(wait, current);
-	struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL);
+	struct resource *res = alloc_resource(GFP_KERNEL);
 
 	if (!res)
 		return NULL;
@@ -924,7 +975,7 @@ struct resource * __request_region(struct resource *parent,
 			continue;
 		}
 		/* Uhhuh, that didn't work out.. */
-		kfree(res);
+		free_resource(res);
 		res = NULL;
 		break;
 	}
@@ -958,7 +1009,7 @@ int __check_region(struct resource *parent, resource_size_t start,
 		return -EBUSY;
 
 	release_resource(res);
-	kfree(res);
+	free_resource(res);
 	return 0;
 }
 EXPORT_SYMBOL(__check_region);
@@ -998,7 +1049,7 @@ void __release_region(struct resource *parent, resource_size_t start,
 			write_unlock(&resource_lock);
 			if (res->flags & IORESOURCE_MUXED)
 				wake_up(&muxed_resource_wait);
-			kfree(res);
+			free_resource(res);
 			return;
 		}
 		p = &res->sibling;
@@ -1012,6 +1063,109 @@ void __release_region(struct resource *parent, resource_size_t start,
 }
 EXPORT_SYMBOL(__release_region);
 
+#ifdef CONFIG_MEMORY_HOTREMOVE
+/**
+ * release_mem_region_adjustable - release a previously reserved memory region
+ * @parent: parent resource descriptor
+ * @start: resource start address
+ * @size: resource region size
+ *
+ * This interface is intended for memory hot-delete.  The requested region
+ * is released from a currently busy memory resource.  The requested region
+ * must either match exactly or fit into a single busy resource entry.  In
+ * the latter case, the remaining resource is adjusted accordingly.
+ * Existing children of the busy memory resource must be immutable in the
+ * request.
+ *
+ * Note:
+ * - Additional release conditions, such as overlapping region, can be
+ *   supported after they are confirmed as valid cases.
+ * - When a busy memory resource gets split into two entries, the code
+ *   assumes that all children remain in the lower address entry for
+ *   simplicity.  Enhance this logic when necessary.
+ */
+int release_mem_region_adjustable(struct resource *parent,
+			resource_size_t start, resource_size_t size)
+{
+	struct resource **p;
+	struct resource *res;
+	struct resource *new_res;
+	resource_size_t end;
+	int ret = -EINVAL;
+
+	end = start + size - 1;
+	if ((start < parent->start) || (end > parent->end))
+		return ret;
+
+	/* The alloc_resource() result gets checked later */
+	new_res = alloc_resource(GFP_KERNEL);
+
+	p = &parent->child;
+	write_lock(&resource_lock);
+
+	while ((res = *p)) {
+		if (res->start >= end)
+			break;
+
+		/* look for the next resource if it does not fit into */
+		if (res->start > start || res->end < end) {
+			p = &res->sibling;
+			continue;
+		}
+
+		if (!(res->flags & IORESOURCE_MEM))
+			break;
+
+		if (!(res->flags & IORESOURCE_BUSY)) {
+			p = &res->child;
+			continue;
+		}
+
+		/* found the target resource; let's adjust accordingly */
+		if (res->start == start && res->end == end) {
+			/* free the whole entry */
+			*p = res->sibling;
+			free_resource(res);
+			ret = 0;
+		} else if (res->start == start && res->end != end) {
+			/* adjust the start */
+			ret = __adjust_resource(res, end + 1,
+						res->end - end);
+		} else if (res->start != start && res->end == end) {
+			/* adjust the end */
+			ret = __adjust_resource(res, res->start,
+						start - res->start);
+		} else {
+			/* split into two entries */
+			if (!new_res) {
+				ret = -ENOMEM;
+				break;
+			}
+			new_res->name = res->name;
+			new_res->start = end + 1;
+			new_res->end = res->end;
+			new_res->flags = res->flags;
+			new_res->parent = res->parent;
+			new_res->sibling = res->sibling;
+			new_res->child = NULL;
+
+			ret = __adjust_resource(res, res->start,
+						start - res->start);
+			if (ret)
+				break;
+			res->sibling = new_res;
+			new_res = NULL;
+		}
+
+		break;
+	}
+
+	write_unlock(&resource_lock);
+	free_resource(new_res);
+	return ret;
+}
+#endif	/* CONFIG_MEMORY_HOTREMOVE */
+
 /*
  * Managed region resource
  */
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index afc1dc60f3f8..9edcf456e0fc 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -106,7 +106,6 @@ extern unsigned int core_pipe_limit;
 #endif
 extern int pid_max;
 extern int pid_max_min, pid_max_max;
-extern int sysctl_drop_caches;
 extern int percpu_pagelist_fraction;
 extern int compat_log;
 extern int latencytop_enabled;
@@ -1430,6 +1429,20 @@ static struct ctl_table vm_table[] = {
 		.extra2		= &one,
 	},
 #endif
+	{
+		.procname	= "user_reserve_kbytes",
+		.data		= &sysctl_user_reserve_kbytes,
+		.maxlen		= sizeof(sysctl_user_reserve_kbytes),
+		.mode		= 0644,
+		.proc_handler	= proc_doulongvec_minmax,
+	},
+	{
+		.procname	= "admin_reserve_kbytes",
+		.data		= &sysctl_admin_reserve_kbytes,
+		.maxlen		= sizeof(sysctl_admin_reserve_kbytes),
+		.mode		= 0644,
+		.proc_handler	= proc_doulongvec_minmax,
+	},
 	{ }
 };