Merge branch 'akpm' (patches from Andrew)

Merge updates from Andrew Morton:
 "A few little subsystems and a start of a lot of MM patches.

  Subsystems affected by this patch series: squashfs, ocfs2, parisc,
  vfs. With mm subsystems: slab-generic, slub, debug, pagecache, gup,
  swap, memcg, pagemap, memory-failure, vmalloc, kasan"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (128 commits)
  kasan: move kasan_report() into report.c
  mm/mm_init.c: report kasan-tag information stored in page->flags
  ubsan: entirely disable alignment checks under UBSAN_TRAP
  kasan: fix clang compilation warning due to stack protector
  x86/mm: remove vmalloc faulting
  mm: remove vmalloc_sync_(un)mappings()
  x86/mm/32: implement arch_sync_kernel_mappings()
  x86/mm/64: implement arch_sync_kernel_mappings()
  mm/ioremap: track which page-table levels were modified
  mm/vmalloc: track which page-table levels were modified
  mm: add functions to track page directory modifications
  s390: use __vmalloc_node in stack_alloc
  powerpc: use __vmalloc_node in alloc_vm_stack
  arm64: use __vmalloc_node in arch_alloc_vmap_stack
  mm: remove vmalloc_user_node_flags
  mm: switch the test_vmalloc module to use __vmalloc_node
  mm: remove __vmalloc_node_flags_caller
  mm: remove both instances of __vmalloc_node_flags
  mm: remove the prot argument to __vmalloc_node
  mm: remove the pgprot argument to __vmalloc
  ...

5 files changed, 16 insertions, 30 deletions

diff --git a/drivers/media/common/videobuf2/videobuf2-dma-sg.c b/drivers/media/common/videobuf2/videobuf2-dma-sg.c
index 6db60e9d5183..92072a08af25 100644
--- a/drivers/media/common/videobuf2/videobuf2-dma-sg.c
+++ b/drivers/media/common/videobuf2/videobuf2-dma-sg.c
@@ -309,8 +309,7 @@ static void *vb2_dma_sg_vaddr(void *buf_priv)
 		if (buf->db_attach)
 			buf->vaddr = dma_buf_vmap(buf->db_attach->dmabuf);
 		else
-			buf->vaddr = vm_map_ram(buf->pages,
-					buf->num_pages, -1, PAGE_KERNEL);
+			buf->vaddr = vm_map_ram(buf->pages, buf->num_pages, -1);
 	}
 
 	/* add offset in case userptr is not page-aligned */
diff --git a/drivers/media/common/videobuf2/videobuf2-vmalloc.c b/drivers/media/common/videobuf2/videobuf2-vmalloc.c
index 1a4f0ca87c7c..c66fda4a65e4 100644
--- a/drivers/media/common/videobuf2/videobuf2-vmalloc.c
+++ b/drivers/media/common/videobuf2/videobuf2-vmalloc.c
@@ -107,8 +107,7 @@ static void *vb2_vmalloc_get_userptr(struct device *dev, unsigned long vaddr,
 		buf->vaddr = (__force void *)
 			ioremap(__pfn_to_phys(nums[0]), size + offset);
 	} else {
-		buf->vaddr = vm_map_ram(frame_vector_pages(vec), n_pages, -1,
-					PAGE_KERNEL);
+		buf->vaddr = vm_map_ram(frame_vector_pages(vec), n_pages, -1);
 	}
 
 	if (!buf->vaddr)
diff --git a/drivers/media/pci/ivtv/ivtv-udma.c b/drivers/media/pci/ivtv/ivtv-udma.c
index 5f8883031c9c..0d8372cc364a 100644
--- a/drivers/media/pci/ivtv/ivtv-udma.c
+++ b/drivers/media/pci/ivtv/ivtv-udma.c
@@ -92,7 +92,7 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr,
 {
 	struct ivtv_dma_page_info user_dma;
 	struct ivtv_user_dma *dma = &itv->udma;
-	int i, err;
+	int err;
 
 	IVTV_DEBUG_DMA("ivtv_udma_setup, dst: 0x%08x\n", (unsigned int)ivtv_dest_addr);
 
@@ -111,16 +111,15 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr,
 		return -EINVAL;
 	}
 
-	/* Get user pages for DMA Xfer */
-	err = get_user_pages_unlocked(user_dma.uaddr, user_dma.page_count,
+	/* Pin user pages for DMA Xfer */
+	err = pin_user_pages_unlocked(user_dma.uaddr, user_dma.page_count,
 			dma->map, FOLL_FORCE);
 
 	if (user_dma.page_count != err) {
 		IVTV_DEBUG_WARN("failed to map user pages, returned %d instead of %d\n",
 			   err, user_dma.page_count);
 		if (err >= 0) {
-			for (i = 0; i < err; i++)
-				put_page(dma->map[i]);
+			unpin_user_pages(dma->map, err);
 			return -EINVAL;
 		}
 		return err;
@@ -130,9 +129,7 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr,
 
 	/* Fill SG List with new values */
 	if (ivtv_udma_fill_sg_list(dma, &user_dma, 0) < 0) {
-		for (i = 0; i < dma->page_count; i++) {
-			put_page(dma->map[i]);
-		}
+		unpin_user_pages(dma->map, dma->page_count);
 		dma->page_count = 0;
 		return -ENOMEM;
 	}
@@ -153,7 +150,6 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr,
 void ivtv_udma_unmap(struct ivtv *itv)
 {
 	struct ivtv_user_dma *dma = &itv->udma;
-	int i;
 
 	IVTV_DEBUG_INFO("ivtv_unmap_user_dma\n");
 
@@ -169,10 +165,7 @@ void ivtv_udma_unmap(struct ivtv *itv)
 	/* sync DMA */
 	ivtv_udma_sync_for_cpu(itv);
 
-	/* Release User Pages */
-	for (i = 0; i < dma->page_count; i++) {
-		put_page(dma->map[i]);
-	}
+	unpin_user_pages(dma->map, dma->page_count);
 	dma->page_count = 0;
 }
 
diff --git a/drivers/media/pci/ivtv/ivtv-yuv.c b/drivers/media/pci/ivtv/ivtv-yuv.c
index cd2fe2d444c0..5f7dc9771f8d 100644
--- a/drivers/media/pci/ivtv/ivtv-yuv.c
+++ b/drivers/media/pci/ivtv/ivtv-yuv.c
@@ -30,7 +30,6 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
 	struct yuv_playback_info *yi = &itv->yuv_info;
 	u8 frame = yi->draw_frame;
 	struct yuv_frame_info *f = &yi->new_frame_info[frame];
-	int i;
 	int y_pages, uv_pages;
 	unsigned long y_buffer_offset, uv_buffer_offset;
 	int y_decode_height, uv_decode_height, y_size;
@@ -62,12 +61,12 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
 	ivtv_udma_get_page_info (&y_dma, (unsigned long)args->y_source, 720 * y_decode_height);
 	ivtv_udma_get_page_info (&uv_dma, (unsigned long)args->uv_source, 360 * uv_decode_height);
 
-	/* Get user pages for DMA Xfer */
-	y_pages = get_user_pages_unlocked(y_dma.uaddr,
+	/* Pin user pages for DMA Xfer */
+	y_pages = pin_user_pages_unlocked(y_dma.uaddr,
 			y_dma.page_count, &dma->map[0], FOLL_FORCE);
 	uv_pages = 0; /* silence gcc. value is set and consumed only if: */
 	if (y_pages == y_dma.page_count) {
-		uv_pages = get_user_pages_unlocked(uv_dma.uaddr,
+		uv_pages = pin_user_pages_unlocked(uv_dma.uaddr,
 				uv_dma.page_count, &dma->map[y_pages],
 				FOLL_FORCE);
 	}
@@ -81,8 +80,7 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
 				 uv_pages, uv_dma.page_count);
 
 			if (uv_pages >= 0) {
-				for (i = 0; i < uv_pages; i++)
-					put_page(dma->map[y_pages + i]);
+				unpin_user_pages(&dma->map[y_pages], uv_pages);
 				rc = -EFAULT;
 			} else {
 				rc = uv_pages;
@@ -93,8 +91,7 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
 				 y_pages, y_dma.page_count);
 		}
 		if (y_pages >= 0) {
-			for (i = 0; i < y_pages; i++)
-				put_page(dma->map[i]);
+			unpin_user_pages(dma->map, y_pages);
 			/*
 			 * Inherit the -EFAULT from rc's
 			 * initialization, but allow it to be
@@ -112,9 +109,7 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
 	/* Fill & map SG List */
 	if (ivtv_udma_fill_sg_list (dma, &uv_dma, ivtv_udma_fill_sg_list (dma, &y_dma, 0)) < 0) {
 		IVTV_DEBUG_WARN("could not allocate bounce buffers for highmem userspace buffers\n");
-		for (i = 0; i < dma->page_count; i++) {
-			put_page(dma->map[i]);
-		}
+		unpin_user_pages(dma->map, dma->page_count);
 		dma->page_count = 0;
 		return -ENOMEM;
 	}
diff --git a/drivers/media/pci/ivtv/ivtvfb.c b/drivers/media/pci/ivtv/ivtvfb.c
index 0c2859844081..e2d56dca5be4 100644
--- a/drivers/media/pci/ivtv/ivtvfb.c
+++ b/drivers/media/pci/ivtv/ivtvfb.c
@@ -281,10 +281,10 @@ static int ivtvfb_prep_dec_dma_to_device(struct ivtv *itv,
 	/* Map User DMA */
 	if (ivtv_udma_setup(itv, ivtv_dest_addr, userbuf, size_in_bytes) <= 0) {
 		mutex_unlock(&itv->udma.lock);
-		IVTVFB_WARN("ivtvfb_prep_dec_dma_to_device, Error with get_user_pages: %d bytes, %d pages returned\n",
+		IVTVFB_WARN("ivtvfb_prep_dec_dma_to_device, Error with pin_user_pages: %d bytes, %d pages returned\n",
 			       size_in_bytes, itv->udma.page_count);
 
-		/* get_user_pages must have failed completely */
+		/* pin_user_pages must have failed completely */
 		return -EIO;
 	}