Merge branch 'akpm' (patches from Andrew)

Merge more updates from Andrew Morton:

 - a few block updates that fell in my lap

 - lib/ updates

 - checkpatch

 - autofs

 - ipc

 - a ton of misc other things

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (100 commits)
  mm: split gfp_mask and mapping flags into separate fields
  fs: use mapping_set_error instead of opencoded set_bit
  treewide: remove redundant #include <linux/kconfig.h>
  hung_task: allow hung_task_panic when hung_task_warnings is 0
  kthread: add kerneldoc for kthread_create()
  kthread: better support freezable kthread workers
  kthread: allow to modify delayed kthread work
  kthread: allow to cancel kthread work
  kthread: initial support for delayed kthread work
  kthread: detect when a kthread work is used by more workers
  kthread: add kthread_destroy_worker()
  kthread: add kthread_create_worker*()
  kthread: allow to call __kthread_create_on_node() with va_list args
  kthread/smpboot: do not park in kthread_create_on_cpu()
  kthread: kthread worker API cleanup
  kthread: rename probe_kthread_data() to kthread_probe_data()
  scripts/tags.sh: enable code completion in VIM
  mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping
  kdump, vmcoreinfo: report memory sections virtual addresses
  ipc/sem.c: add cond_resched in exit_sme
  ...

99 files changed, 77 insertions, 169 deletions

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index cbdb3b162718..fa1b7a90ba11 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -840,13 +840,13 @@ static void loop_config_discard(struct loop_device *lo)
 
 static void loop_unprepare_queue(struct loop_device *lo)
 {
-	flush_kthread_worker(&lo->worker);
+	kthread_flush_worker(&lo->worker);
 	kthread_stop(lo->worker_task);
 }
 
 static int loop_prepare_queue(struct loop_device *lo)
 {
-	init_kthread_worker(&lo->worker);
+	kthread_init_worker(&lo->worker);
 	lo->worker_task = kthread_run(kthread_worker_fn,
 			&lo->worker, "loop%d", lo->lo_number);
 	if (IS_ERR(lo->worker_task))
@@ -1658,7 +1658,7 @@ static int loop_queue_rq(struct blk_mq_hw_ctx *hctx,
 		break;
 	}
 
-	queue_kthread_work(&lo->worker, &cmd->work);
+	kthread_queue_work(&lo->worker, &cmd->work);
 
 	return BLK_MQ_RQ_QUEUE_OK;
 }
@@ -1696,7 +1696,7 @@ static int loop_init_request(void *data, struct request *rq,
 	struct loop_cmd *cmd = blk_mq_rq_to_pdu(rq);
 
 	cmd->rq = rq;
-	init_kthread_work(&cmd->work, loop_queue_work);
+	kthread_init_work(&cmd->work, loop_queue_work);
 
 	return 0;
 }
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 3efb3bf0ab83..d131e152c8ce 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -2100,23 +2100,37 @@ unsigned long get_random_long(void)
 }
 EXPORT_SYMBOL(get_random_long);
 
-/*
- * randomize_range() returns a start address such that
+/**
+ * randomize_page - Generate a random, page aligned address
+ * @start:	The smallest acceptable address the caller will take.
+ * @range:	The size of the area, starting at @start, within which the
+ *		random address must fall.
+ *
+ * If @start + @range would overflow, @range is capped.
  *
- *    [...... <range> .....]
- *  start                  end
+ * NOTE: Historical use of randomize_range, which this replaces, presumed that
+ * @start was already page aligned.  We now align it regardless.
  *
- * a <range> with size "len" starting at the return value is inside in the
- * area defined by [start, end], but is otherwise randomized.
+ * Return: A page aligned address within [start, start + range).  On error,
+ * @start is returned.
  */
 unsigned long
-randomize_range(unsigned long start, unsigned long end, unsigned long len)
+randomize_page(unsigned long start, unsigned long range)
 {
-	unsigned long range = end - len - start;
+	if (!PAGE_ALIGNED(start)) {
+		range -= PAGE_ALIGN(start) - start;
+		start = PAGE_ALIGN(start);
+	}
 
-	if (end <= start + len)
-		return 0;
-	return PAGE_ALIGN(get_random_int() % range + start);
+	if (start > ULONG_MAX - range)
+		range = ULONG_MAX - start;
+
+	range >>= PAGE_SHIFT;
+
+	if (range == 0)
+		return start;
+
+	return start + (get_random_long() % range << PAGE_SHIFT);
 }
 
 /* Interface for in-kernel drivers of true hardware RNGs.
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 8114744bf30c..d433b1db1fdd 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -38,7 +38,6 @@
 #include <linux/workqueue.h>
 #include <linux/module.h>
 #include <linux/dma-mapping.h>
-#include <linux/kconfig.h>
 #include "../tty/hvc/hvc_console.h"
 
 #define is_rproc_enabled IS_ENABLED(CONFIG_REMOTEPROC)
diff --git a/drivers/infiniband/sw/rdmavt/cq.c b/drivers/infiniband/sw/rdmavt/cq.c
index f2f229efbe64..6d9904a4a0ab 100644
--- a/drivers/infiniband/sw/rdmavt/cq.c
+++ b/drivers/infiniband/sw/rdmavt/cq.c
@@ -129,7 +129,7 @@ void rvt_cq_enter(struct rvt_cq *cq, struct ib_wc *entry, bool solicited)
 		if (likely(worker)) {
 			cq->notify = RVT_CQ_NONE;
 			cq->triggered++;
-			queue_kthread_work(worker, &cq->comptask);
+			kthread_queue_work(worker, &cq->comptask);
 		}
 	}
 
@@ -265,7 +265,7 @@ struct ib_cq *rvt_create_cq(struct ib_device *ibdev,
 	cq->ibcq.cqe = entries;
 	cq->notify = RVT_CQ_NONE;
 	spin_lock_init(&cq->lock);
-	init_kthread_work(&cq->comptask, send_complete);
+	kthread_init_work(&cq->comptask, send_complete);
 	cq->queue = wc;
 
 	ret = &cq->ibcq;
@@ -295,7 +295,7 @@ int rvt_destroy_cq(struct ib_cq *ibcq)
 	struct rvt_cq *cq = ibcq_to_rvtcq(ibcq);
 	struct rvt_dev_info *rdi = cq->rdi;
 
-	flush_kthread_work(&cq->comptask);
+	kthread_flush_work(&cq->comptask);
 	spin_lock(&rdi->n_cqs_lock);
 	rdi->n_cqs_allocated--;
 	spin_unlock(&rdi->n_cqs_lock);
@@ -514,7 +514,7 @@ int rvt_driver_cq_init(struct rvt_dev_info *rdi)
 	rdi->worker = kzalloc(sizeof(*rdi->worker), GFP_KERNEL);
 	if (!rdi->worker)
 		return -ENOMEM;
-	init_kthread_worker(rdi->worker);
+	kthread_init_worker(rdi->worker);
 	task = kthread_create_on_node(
 		kthread_worker_fn,
 		rdi->worker,
@@ -547,7 +547,7 @@ void rvt_cq_exit(struct rvt_dev_info *rdi)
 	/* blocks future queuing from send_complete() */
 	rdi->worker = NULL;
 	smp_wmb(); /* See rdi_cq_enter */
-	flush_kthread_worker(worker);
+	kthread_flush_worker(worker);
 	kthread_stop(worker->task);
 	kfree(worker);
 }
diff --git a/drivers/input/rmi4/rmi_bus.c b/drivers/input/rmi4/rmi_bus.c
index 09c769c6e91f..ef8c747c35e7 100644
--- a/drivers/input/rmi4/rmi_bus.c
+++ b/drivers/input/rmi4/rmi_bus.c
@@ -9,7 +9,6 @@
 
 #include <linux/kernel.h>
 #include <linux/device.h>
-#include <linux/kconfig.h>
 #include <linux/list.h>
 #include <linux/pm.h>
 #include <linux/rmi.h>
diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c
index c83bce89028b..4a88312fbd25 100644
--- a/drivers/input/rmi4/rmi_driver.c
+++ b/drivers/input/rmi4/rmi_driver.c
@@ -17,7 +17,6 @@
 #include <linux/bitmap.h>
 #include <linux/delay.h>
 #include <linux/fs.h>
-#include <linux/kconfig.h>
 #include <linux/pm.h>
 #include <linux/slab.h>
 #include <linux/of.h>
diff --git a/drivers/input/rmi4/rmi_f01.c b/drivers/input/rmi4/rmi_f01.c
index fac81fc9bcf6..b5d2dfc23bad 100644
--- a/drivers/input/rmi4/rmi_f01.c
+++ b/drivers/input/rmi4/rmi_f01.c
@@ -8,7 +8,6 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/kconfig.h>
 #include <linux/rmi.h>
 #include <linux/slab.h>
 #include <linux/uaccess.h>
diff --git a/drivers/input/rmi4/rmi_f11.c b/drivers/input/rmi4/rmi_f11.c
index 20c7134b3d3b..f798f427a46f 100644
--- a/drivers/input/rmi4/rmi_f11.c
+++ b/drivers/input/rmi4/rmi_f11.c
@@ -12,7 +12,6 @@
 #include <linux/device.h>
 #include <linux/input.h>
 #include <linux/input/mt.h>
-#include <linux/kconfig.h>
 #include <linux/rmi.h>
 #include <linux/slab.h>
 #include <linux/of.h>
diff --git a/drivers/irqchip/irq-bcm6345-l1.c b/drivers/irqchip/irq-bcm6345-l1.c
index b844c89a9506..daa4ae89e466 100644
--- a/drivers/irqchip/irq-bcm6345-l1.c
+++ b/drivers/irqchip/irq-bcm6345-l1.c
@@ -52,7 +52,6 @@
 
 #include <linux/bitops.h>
 #include <linux/cpumask.h>
-#include <linux/kconfig.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
diff --git a/drivers/irqchip/irq-bcm7038-l1.c b/drivers/irqchip/irq-bcm7038-l1.c
index 0fea985ef1dc..353c54986211 100644
--- a/drivers/irqchip/irq-bcm7038-l1.c
+++ b/drivers/irqchip/irq-bcm7038-l1.c
@@ -12,7 +12,6 @@
 #define pr_fmt(fmt)	KBUILD_MODNAME	": " fmt