Merge branch 'akpm' (patches from Andrew)

Merge yet more updates from Andrew Morton:

 - the rest of MM

 - various misc fixes and tweaks

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (22 commits)
  mm: Change return type int to vm_fault_t for fault handlers
  lib/fonts: convert comments to utf-8
  s390: ebcdic: convert comments to UTF-8
  treewide: convert ISO_8859-1 text comments to utf-8
  drivers/gpu/drm/gma500/: change return type to vm_fault_t
  docs/core-api: mm-api: add section about GFP flags
  docs/mm: make GFP flags descriptions usable as kernel-doc
  docs/core-api: split memory management API to a separate file
  docs/core-api: move *{str,mem}dup* to "String Manipulation"
  docs/core-api: kill trailing whitespace in kernel-api.rst
  mm/util: add kernel-doc for kvfree
  mm/util: make strndup_user description a kernel-doc comment
  fs/proc/vmcore.c: hide vmcoredd_mmap_dumps() for nommu builds
  treewide: correct "differenciate" and "instanciate" typos
  fs/afs: use new return type vm_fault_t
  drivers/hwtracing/intel_th/msu.c: change return type to vm_fault_t
  mm: soft-offline: close the race against page allocation
  mm: fix race on soft-offlining free huge pages
  namei: allow restricted O_CREAT of FIFOs and regular files
  hfs: prevent crash on exit from failed search
  ...

8 files changed, 28 insertions, 38 deletions

diff --git a/drivers/crypto/vmx/ghashp8-ppc.pl b/drivers/crypto/vmx/ghashp8-ppc.pl
index f746af271460..38b06503ede0 100644
--- a/drivers/crypto/vmx/ghashp8-ppc.pl
+++ b/drivers/crypto/vmx/ghashp8-ppc.pl
@@ -129,9 +129,9 @@ $code=<<___;
 	 le?vperm	$IN,$IN,$IN,$lemask
 	vxor		$zero,$zero,$zero
 
-	vpmsumd		$Xl,$IN,$Hl		# H.lo·Xi.lo
-	vpmsumd		$Xm,$IN,$H		# H.hi·Xi.lo+H.lo·Xi.hi
-	vpmsumd		$Xh,$IN,$Hh		# H.hi·Xi.hi
+	vpmsumd		$Xl,$IN,$Hl		# H.lo·Xi.lo
+	vpmsumd		$Xm,$IN,$H		# H.hi·Xi.lo+H.lo·Xi.hi
+	vpmsumd		$Xh,$IN,$Hh		# H.hi·Xi.hi
 
 	vpmsumd		$t2,$Xl,$xC2		# 1st phase
 
@@ -187,11 +187,11 @@ $code=<<___;
 .align	5
 Loop:
 	 subic		$len,$len,16
-	vpmsumd		$Xl,$IN,$Hl		# H.lo·Xi.lo
+	vpmsumd		$Xl,$IN,$Hl		# H.lo·Xi.lo
 	 subfe.		r0,r0,r0		# borrow?-1:0
-	vpmsumd		$Xm,$IN,$H		# H.hi·Xi.lo+H.lo·Xi.hi
+	vpmsumd		$Xm,$IN,$H		# H.hi·Xi.lo+H.lo·Xi.hi
 	 and		r0,r0,$len
-	vpmsumd		$Xh,$IN,$Hh		# H.hi·Xi.hi
+	vpmsumd		$Xh,$IN,$Hh		# H.hi·Xi.hi
 	 add		$inp,$inp,r0
 
 	vpmsumd		$t2,$Xl,$xC2		# 1st phase
diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c
index 2f00a37684a2..adefae58b5fc 100644
--- a/drivers/gpu/drm/gma500/framebuffer.c
+++ b/drivers/gpu/drm/gma500/framebuffer.c
@@ -108,7 +108,7 @@ static int psbfb_pan(struct fb_var_screeninfo *var, struct fb_info *info)
         return 0;
 }
 
-static int psbfb_vm_fault(struct vm_fault *vmf)
+static vm_fault_t psbfb_vm_fault(struct vm_fault *vmf)
 {
 	struct vm_area_struct *vma = vmf->vma;
 	struct psb_framebuffer *psbfb = vma->vm_private_data;
@@ -118,7 +118,7 @@ static int psbfb_vm_fault(struct vm_fault *vmf)
 	int page_num;
 	int i;
 	unsigned long address;
-	int ret;
+	vm_fault_t ret = VM_FAULT_SIGBUS;
 	unsigned long pfn;
 	unsigned long phys_addr = (unsigned long)dev_priv->stolen_base +
 				  gtt->offset;
@@ -131,18 +131,14 @@ static int psbfb_vm_fault(struct vm_fault *vmf)
 	for (i = 0; i < page_num; i++) {
 		pfn = (phys_addr >> PAGE_SHIFT);
 
-		ret = vm_insert_mixed(vma, address,
+		ret = vmf_insert_mixed(vma, address,
 				__pfn_to_pfn_t(pfn, PFN_DEV));
-		if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0)))
+		if (unlikely(ret & VM_FAULT_ERROR))
 			break;
-		else if (unlikely(ret != 0)) {
-			ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
-			return ret;
-		}
 		address += PAGE_SIZE;
 		phys_addr += PAGE_SIZE;
 	}
-	return VM_FAULT_NOPAGE;
+	return ret;
 }
 
 static void psbfb_vm_open(struct vm_area_struct *vma)
diff --git a/drivers/gpu/drm/gma500/gem.c b/drivers/gpu/drm/gma500/gem.c
index 913bf4c256fa..576f1b272f23 100644
--- a/drivers/gpu/drm/gma500/gem.c
+++ b/drivers/gpu/drm/gma500/gem.c
@@ -134,12 +134,13 @@ int psb_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
  *	vma->vm_private_data points to the GEM object that is backing this
  *	mapping.
  */
-int psb_gem_fault(struct vm_fault *vmf)
+vm_fault_t psb_gem_fault(struct vm_fault *vmf)
 {
 	struct vm_area_struct *vma = vmf->vma;
 	struct drm_gem_object *obj;
 	struct gtt_range *r;
-	int ret;
+	int err;
+	vm_fault_t ret;
 	unsigned long pfn;
 	pgoff_t page_offset;
 	struct drm_device *dev;
@@ -158,9 +159,10 @@ int psb_gem_fault(struct vm_fault *vmf)
 	/* For now the mmap pins the object and it stays pinned. As things
 	   stand that will do us no harm */
 	if (r->mmapping == 0) {
-		ret = psb_gtt_pin(r);
-		if (ret < 0) {
-			dev_err(dev->dev, "gma500: pin failed: %d\n", ret);
+		err = psb_gtt_pin(r);
+		if (err < 0) {
+			dev_err(dev->dev, "gma500: pin failed: %d\n", err);
+			ret = vmf_error(err);
 			goto fail;
 		}
 		r->mmapping = 1;
@@ -175,18 +177,9 @@ int psb_gem_fault(struct vm_fault *vmf)
 		pfn = (dev_priv->stolen_base + r->offset) >> PAGE_SHIFT;
 	else
 		pfn = page_to_pfn(r->pages[page_offset]);
-	ret = vm_insert_pfn(vma, vmf->address, pfn);
-
+	ret = vmf_insert_pfn(vma, vmf->address, pfn);
 fail:
 	mutex_unlock(&dev_priv->mmap_mutex);
-	switch (ret) {
-	case 0:
-	case -ERESTARTSYS:
-	case -EINTR:
-		return VM_FAULT_NOPAGE;
-	case -ENOMEM:
-		return VM_FAULT_OOM;
-	default:
-		return VM_FAULT_SIGBUS;
-	}
+
+	return ret;
 }
diff --git a/drivers/gpu/drm/gma500/psb_drv.h b/drivers/gpu/drm/gma500/psb_drv.h
index e8300f509023..93d2f4000d2f 100644
--- a/drivers/gpu/drm/gma500/psb_drv.h
+++ b/drivers/gpu/drm/gma500/psb_drv.h
@@ -21,6 +21,7 @@
 #define _PSB_DRV_H_
 
 #include <linux/kref.h>
+#include <linux/mm_types.h>
 
 #include <drm/drmP.h>
 #include <drm/drm_global.h>
@@ -749,7 +750,7 @@ extern int psb_gem_get_aperture(struct drm_device *dev, void *data,
 			struct drm_file *file);
 extern int psb_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
 			struct drm_mode_create_dumb *args);
-extern int psb_gem_fault(struct vm_fault *vmf);
+extern vm_fault_t psb_gem_fault(struct vm_fault *vmf);
 
 /* psb_device.c */
 extern const struct psb_ops psb_chip_ops;
diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index 634f58042c77..d293e55553bd 100644
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -1182,7 +1182,7 @@ static void msc_mmap_close(struct vm_area_struct *vma)
 	mutex_unlock(&msc->buf_mutex);
 }
 
-static int msc_mmap_fault(struct vm_fault *vmf)
+static vm_fault_t msc_mmap_fault(struct vm_fault *vmf)
 {
 	struct msc_iter *iter = vmf->vma->vm_file->private_data;
 	struct msc *msc = iter->msc;
diff --git a/drivers/iio/dac/ltc2632.c b/drivers/iio/dac/ltc2632.c
index 28e9b7656b20..15d498fc4758 100644
--- a/drivers/iio/dac/ltc2632.c
+++ b/drivers/iio/dac/ltc2632.c
@@ -1,7 +1,7 @@
 /*
  * LTC2632 Digital to analog convertors spi driver
  *
- * Copyright 2017 Maxime Roussin-Bélanger
+ * Copyright 2017 Maxime Roussin-Bélanger
  * expanded by Silvan Murer <silvan.murer@gmail.com>
  *
  * Licensed under the GPL-2.
diff --git a/drivers/power/reset/ltc2952-poweroff.c b/drivers/power/reset/ltc2952-poweroff.c
index 6b911b6b10a6..c484584745bc 100644
--- a/drivers/power/reset/ltc2952-poweroff.c
+++ b/drivers/power/reset/ltc2952-poweroff.c
@@ -2,7 +2,7 @@
  * LTC2952 (PowerPath) driver
  *
  * Copyright (C) 2014, Xsens Technologies BV <info@xsens.com>
- * Maintainer: René Moll <linux@r-moll.nl>
+ * Maintainer: René Moll <linux@r-moll.nl>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -319,6 +319,6 @@ static struct platform_driver ltc2952_poweroff_driver = {
 
 module_platform_driver(ltc2952_poweroff_driver);
 
-MODULE_AUTHOR("René Moll <rene.moll@xsens.com>");
+MODULE_AUTHOR("René Moll <rene.moll@xsens.com>");
 MODULE_DESCRIPTION("LTC PowerPath power-off driver");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/thermal/intel_powerclamp.c b/drivers/thermal/intel_powerclamp.c
index 4540e892b61d..cde891c54cde 100644
--- a/drivers/thermal/intel_powerclamp.c
+++ b/drivers/thermal/intel_powerclamp.c
@@ -28,7 +28,7 @@
  *              case of external interrupts without need for ack, clamping down
  *              cpu in non-irq context does not reduce irq. for majority of the
  *              cases, clamping down cpu does help reduce irq as well, we should
- *              be able to differenciate the two cases and give a quantitative
+ *              be able to differentiate the two cases and give a quantitative
  *              solution for the irqs that we can control. perhaps based on
  *              get_cpu_iowait_time_us()
  *