Merge remote branch 'fsl-linux-sdk/imx_3.0.35' into imx_3.0.35_android

Conflicts:
	arch/arm/configs/imx6_defconfig
	arch/arm/configs/imx6_updater_defconfig
	arch/arm/configs/imx6s_defconfig
	arch/arm/include/asm/dma-mapping.h
	arch/arm/kernel/smp.c
	arch/arm/mach-mx6/Kconfig
	arch/arm/mach-mx6/board-mx6dl_arm2.h
	arch/arm/mach-mx6/board-mx6dl_sabresd.h
	arch/arm/mach-mx6/board-mx6q_arm2.c
	arch/arm/mach-mx6/board-mx6q_arm2.h
	arch/arm/mach-mx6/board-mx6q_sabreauto.c
	arch/arm/mach-mx6/board-mx6q_sabreauto.h
	arch/arm/mach-mx6/board-mx6q_sabrelite.c
	arch/arm/mach-mx6/board-mx6q_sabresd.c
	arch/arm/mach-mx6/board-mx6q_sabresd.h
	arch/arm/mach-mx6/board-mx6sl_arm2.c
	arch/arm/mach-mx6/board-mx6sl_arm2.h
	arch/arm/mach-mx6/board-mx6solo_sabreauto.h
	arch/arm/mach-mx6/bus_freq.c
	arch/arm/mach-mx6/clock.c
	arch/arm/mach-mx6/clock_mx6sl.c
	arch/arm/mach-mx6/cpu.c
	arch/arm/mach-mx6/crm_regs.h
	arch/arm/mach-mx6/devices-imx6q.h
	arch/arm/mach-mx6/devices.c
	arch/arm/mach-mx6/mx6_anatop_regulator.c
	arch/arm/mach-mx6/pcie.c
	arch/arm/mach-mx6/system.c
	arch/arm/mm/dma-mapping.c
	arch/arm/plat-mxc/devices/Makefile
	arch/arm/plat-mxc/devices/platform-imx-dcp.c
	arch/arm/plat-mxc/devices/platform-imx-ocotp.c
	arch/arm/plat-mxc/devices/platform-imx-rngb.c
	arch/arm/plat-mxc/devices/platform-mxc_hdmi.c
	arch/arm/plat-mxc/include/mach/devices-common.h
	arch/arm/plat-mxc/include/mach/esdhc.h
	arch/arm/plat-mxc/include/mach/iomux-mx6dl.h
	arch/arm/plat-mxc/include/mach/iomux-mx6q.h
	arch/arm/plat-mxc/include/mach/memory.h
	arch/arm/plat-mxc/include/mach/mx6.h
	arch/arm/plat-mxc/include/mach/mxc_edid.h
	arch/arm/plat-mxc/include/mach/mxc_hdmi.h
	arch/arm/plat-mxc/system.c
	drivers/Kconfig
	drivers/char/hw_random/fsl-rngc.c
	drivers/cpufreq/Makefile
	drivers/cpufreq/cpufreq_interactive.c
	drivers/crypto/Kconfig
	drivers/crypto/caam/caamalg.c
	drivers/crypto/caam/compat.h
	drivers/crypto/caam/ctrl.c
	drivers/crypto/caam/desc_constr.h
	drivers/crypto/caam/intern.h
	drivers/crypto/dcp.c
	drivers/dma/pch_dma.c
	drivers/input/keyboard/gpio_keys.c
	drivers/input/touchscreen/egalax_ts.c
	drivers/input/touchscreen/max11801_ts.c
	drivers/media/video/mxc/capture/Kconfig
	drivers/media/video/mxc/capture/adv7180.c
	drivers/media/video/mxc/capture/ipu_csi_enc.c
	drivers/media/video/mxc/capture/ipu_prp_vf_sdc.c
	drivers/media/video/mxc/capture/ipu_prp_vf_sdc_bg.c
	drivers/media/video/mxc/capture/mxc_v4l2_capture.c
	drivers/media/video/mxc/capture/ov5640_mipi.c
	drivers/media/video/mxc/output/mxc_vout.c
	drivers/misc/Kconfig
	drivers/misc/Makefile
	drivers/mmc/card/block.c
	drivers/mmc/core/mmc.c
	drivers/mmc/host/mmci.c
	drivers/mmc/host/sdhci-esdhc-imx.c
	drivers/mmc/host/sdhci.c
	drivers/mmc/host/sdhci.h
	drivers/mxc/Kconfig
	drivers/mxc/Makefile
	drivers/mxc/asrc/mxc_asrc.c
	drivers/mxc/gpu-viv/arch/XAQ2/hal/kernel/gc_hal_kernel_context.c
	drivers/mxc/gpu-viv/arch/XAQ2/hal/kernel/gc_hal_kernel_hardware.c
	drivers/mxc/gpu-viv/hal/kernel/gc_hal_kernel.c
	drivers/mxc/gpu-viv/hal/kernel/gc_hal_kernel.h
	drivers/mxc/gpu-viv/hal/kernel/gc_hal_kernel_command.c
	drivers/mxc/gpu-viv/hal/kernel/gc_hal_kernel_event.c
	drivers/mxc/gpu-viv/hal/kernel/inc/gc_hal.h
	drivers/mxc/gpu-viv/hal/kernel/inc/gc_hal_base.h
	drivers/mxc/gpu-viv/hal/kernel/inc/gc_hal_options.h
	drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_os.c
	drivers/mxc/ipu3/ipu_device.c
	drivers/mxc/vpu/mxc_vpu.c
	drivers/net/fec.c
	drivers/net/wireless/Makefile
	drivers/power/sabresd_battery.c
	drivers/regulator/core.c
	drivers/tty/serial/imx.c
	drivers/usb/core/hub.c
	drivers/usb/gadget/arcotg_udc.c
	drivers/usb/gadget/fsl_updater.c
	drivers/usb/gadget/inode.c
	drivers/usb/host/ehci-hub.c
	drivers/video/mxc/ldb.c
	drivers/video/mxc/mipi_dsi.c
	drivers/video/mxc/mxc_dispdrv.c
	drivers/video/mxc/mxc_dispdrv.h
	drivers/video/mxc/mxc_edid.c
	drivers/video/mxc/mxc_elcdif_fb.c
	drivers/video/mxc/mxc_ipuv3_fb.c
	drivers/video/mxc/mxc_spdc_fb.c
	drivers/video/mxc_hdmi.c
	drivers/watchdog/imx2_wdt.c
	fs/proc/base.c
	include/linux/mmc/host.h
	include/linux/mmc/sdhci.h
	include/linux/mxc_v4l2.h
	kernel/power/main.c
	sound/soc/codecs/mxc_hdmi.c
	sound/soc/codecs/mxc_spdif.c
	sound/soc/codecs/wm8962.c
	sound/soc/imx/Kconfig
	sound/soc/imx/Makefile
	sound/soc/imx/imx-cs42888.c
	sound/soc/imx/imx-esai.c
	sound/soc/imx/imx-wm8958.c
	sound/soc/imx/imx-wm8962.c

25 files changed, 319 insertions, 118 deletions

diff --git a/mm/bootmem.c b/mm/bootmem.c
index 01d5a4b3dd0c..9686c4e3f80d 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -768,14 +768,13 @@ void * __init alloc_bootmem_section(unsigned long size,
 				    unsigned long section_nr)
 {
 	bootmem_data_t *bdata;
-	unsigned long pfn, goal, limit;
+	unsigned long pfn, goal;
 
 	pfn = section_nr_to_pfn(section_nr);
 	goal = pfn << PAGE_SHIFT;
-	limit = section_nr_to_pfn(section_nr + 1) << PAGE_SHIFT;
 	bdata = &bootmem_node_data[early_pfn_to_nid(pfn)];
 
-	return alloc_bootmem_core(bdata, size, SMP_CACHE_BYTES, goal, limit);
+	return alloc_bootmem_core(bdata, size, SMP_CACHE_BYTES, goal, 0);
 }
 #endif
 
diff --git a/mm/compaction.c b/mm/compaction.c
index 6cc604bd5649..c4bc5acf865d 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -320,12 +320,34 @@ static isolate_migrate_t isolate_migratepages(struct zone *zone,
 		} else if (!locked)
 			spin_lock_irq(&zone->lru_lock);
 
+		/*
+		 * migrate_pfn does not necessarily start aligned to a
+		 * pageblock. Ensure that pfn_valid is called when moving
+		 * into a new MAX_ORDER_NR_PAGES range in case of large
+		 * memory holes within the zone
+		 */
+		if ((low_pfn & (MAX_ORDER_NR_PAGES - 1)) == 0) {
+			if (!pfn_valid(low_pfn)) {
+				low_pfn += MAX_ORDER_NR_PAGES - 1;
+				continue;
+			}
+		}
+
 		if (!pfn_valid_within(low_pfn))
 			continue;
 		nr_scanned++;
 
-		/* Get the page and skip if free */
+		/*
+		 * Get the page and ensure the page is within the same zone.
+		 * See the comment in isolate_freepages about overlapping
+		 * nodes. It is deliberate that the new zone lock is not taken
+		 * as memory compaction should not move pages between nodes.
+		 */
 		page = pfn_to_page(low_pfn);
+		if (page_zone(page) != zone)
+			continue;
+
+		/* Skip if free */
 		if (PageBuddy(page))
 			continue;
 
diff --git a/mm/dmapool.c b/mm/dmapool.c
index 03bf3bb4519a..98798f414cb9 100644
--- a/mm/dmapool.c
+++ b/mm/dmapool.c
@@ -212,6 +212,32 @@ static void pool_initialise_page(struct dma_pool *pool, struct dma_page *page)
 	} while (offset < pool->allocation);
 }
 
+#ifdef CONFIG_FSL_UTP
+static struct dma_page *pool_alloc_page_nonbufferable(struct dma_pool *pool, gfp_t mem_flags)
+{
+	struct dma_page *page;
+
+	page = kmalloc(sizeof(*page), mem_flags);
+	if (!page)
+		return NULL;
+	page->vaddr = dma_alloc_noncacheable(pool->dev, pool->allocation,
+					 &page->dma, mem_flags);
+	if (page->vaddr) {
+#ifdef	DMAPOOL_DEBUG
+		memset(page->vaddr, POOL_POISON_FREED, pool->allocation);
+#endif
+		pool_initialise_page(pool, page);
+		list_add(&page->page_list, &pool->page_list);
+		page->in_use = 0;
+		page->offset = 0;
+	} else {
+		kfree(page);
+		page = NULL;
+	}
+	return page;
+}
+#endif
+
 static struct dma_page *pool_alloc_page(struct dma_pool *pool, gfp_t mem_flags)
 {
 	struct dma_page *page;
@@ -353,6 +379,68 @@ void *dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags,
 }
 EXPORT_SYMBOL(dma_pool_alloc);
 
+#ifdef CONFIG_FSL_UTP
+/**
+ * dma_pool_alloc_nonbufferable - get a block of consistent memory
+ * @pool: dma pool that will produce the block
+ * @mem_flags: GFP_* bitmask
+ * @handle: pointer to dma address of block
+ *
+ * This returns the kernel virtual address of a currently unused block,
+ * and reports its dma address through the handle.
+ * If such a memory block can't be allocated, %NULL is returned.
+ */
+void *dma_pool_alloc_nonbufferable(struct dma_pool *pool, gfp_t mem_flags,
+		     dma_addr_t *handle)
+{
+	unsigned long flags;
+	struct dma_page *page;
+	size_t offset;
+	void *retval;
+
+	might_sleep_if(mem_flags & __GFP_WAIT);
+
+	spin_lock_irqsave(&pool->lock, flags);
+ restart:
+	list_for_each_entry(page, &pool->page_list, page_list) {
+		if (page->offset < pool->allocation)
+			goto ready;
+	}
+	page = pool_alloc_page_nonbufferable(pool, GFP_ATOMIC);
+	if (!page) {
+		if (mem_flags & __GFP_WAIT) {
+			DECLARE_WAITQUEUE(wait, current);
+
+			__set_current_state(TASK_UNINTERRUPTIBLE);
+			__add_wait_queue(&pool->waitq, &wait);
+			spin_unlock_irqrestore(&pool->lock, flags);
+
+			schedule_timeout(POOL_TIMEOUT_JIFFIES);
+
+			spin_lock_irqsave(&pool->lock, flags);
+			__remove_wait_queue(&pool->waitq, &wait);
+			goto restart;
+		}
+		retval = NULL;
+		goto done;
+	}
+
+ ready:
+	page->in_use++;
+	offset = page->offset;
+	page->offset = *(int *)(page->vaddr + offset);
+	retval = offset + page->vaddr;
+	*handle = offset + page->dma;
+#ifdef	DMAPOOL_DEBUG
+	memset(retval, POOL_POISON_ALLOCATED, pool->size);
+#endif
+ done:
+	spin_unlock_irqrestore(&pool->lock, flags);
+	return retval;
+}
+EXPORT_SYMBOL(dma_pool_alloc_nonbufferable);
+#endif
+
 static struct dma_page *pool_find_page(struct dma_pool *pool, dma_addr_t dma)
 {
 	struct dma_page *page;
diff --git a/mm/filemap.c b/mm/filemap.c
index a8251a8d3457..b7d860390f34 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -396,24 +396,11 @@ EXPORT_SYMBOL(filemap_write_and_wait_range);
 int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask)
 {
 	int error;
-	struct mem_cgroup *memcg = NULL;
 
 	VM_BUG_ON(!PageLocked(old));
 	VM_BUG_ON(!PageLocked(new));
 	VM_BUG_ON(new->mapping);
 
-	/*
-	 * This is not page migration, but prepare_migration and
-	 * end_migration does enough work for charge replacement.
-	 *
-	 * In the longer term we probably want a specialized function
-	 * for moving the charge from old to new in a more efficient
-	 * manner.
-	 */
-	error = mem_cgroup_prepare_migration(old, new, &memcg, gfp_mask);
-	if (error)
-		return error;
-
 	error = radix_tree_preload(gfp_mask & ~__GFP_HIGHMEM);
 	if (!error) {
 		struct address_space *mapping = old->mapping;
@@ -435,13 +422,12 @@ int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask)
 		if (PageSwapBacked(new))
 			__inc_zone_page_state(new, NR_SHMEM);
 		spin_unlock_irq(&mapping->tree_lock);
+		/* mem_cgroup codes must not be called under tree_lock */
+		mem_cgroup_replace_page_cache(old, new);
 		radix_tree_preload_end();
 		if (freepage)
 			freepage(old);
 		page_cache_release(old);
-		mem_cgroup_end_migration(memcg, old, new, true);
-	} else {
-		mem_cgroup_end_migration(memcg, old, new, false);
 	}
 
 	return error;
@@ -1393,15 +1379,12 @@ generic_file_aio_read(struct kiocb *iocb, const struct iovec *iov,
 	unsigned long seg = 0;
 	size_t count;
 	loff_t *ppos = &iocb->ki_pos;
-	struct blk_plug plug;
 
 	count = 0;
 	retval = generic_segment_checks(iov, &nr_segs, &count, VERIFY_WRITE);
 	if (retval)
 		return retval;
 
-	blk_start_plug(&plug);
-
 	/* coalesce the iovecs and go direct-to-BIO for O_DIRECT */
 	if (filp->f_flags & O_DIRECT) {
 		loff_t size;
@@ -1417,8 +1400,12 @@ generic_file_aio_read(struct kiocb *iocb, const struct iovec *iov,
 			retval = filemap_write_and_wait_range(mapping, pos,
 					pos + iov_length(iov, nr_segs) - 1);
 			if (!retval) {
+				struct blk_plug plug;
+
+				blk_start_plug(&plug);
 				retval = mapping->a_ops->direct_IO(READ, iocb,
 							iov, pos, nr_segs);
+				blk_finish_plug(&plug);
 			}
 			if (retval > 0) {
 				*ppos = pos + retval;
@@ -1474,7 +1461,6 @@ generic_file_aio_read(struct kiocb *iocb, const struct iovec *iov,
 			break;
 	}
 out:
-	blk_finish_plug(&plug);
 	return retval;
 }
 EXPORT_SYMBOL(generic_file_aio_read);
@@ -1807,7 +1793,7 @@ repeat:
 		page = __page_cache_alloc(gfp | __GFP_COLD);
 		if (!page)
 			return ERR_PTR(-ENOMEM);
-		err = add_to_page_cache_lru(page, mapping, index, GFP_KERNEL);
+		err = add_to_page_cache_lru(page, mapping, index, gfp);
 		if (unlikely(err)) {
 			page_cache_release(page);
 			if (err == -EEXIST)
@@ -1904,10 +1890,7 @@ static struct page *wait_on_page_read(struct page *page)
  * @gfp:	the page allocator flags to use if allocating
  *
  * This is the same as "read_mapping_page(mapping, index, NULL)", but with
- * any new page allocations done using the specified allocation flags. Note
- * that the Radix tree operations will still use GFP_KERNEL, so you can't
- * expect to do this atomically or anything like that - but you can pass in
- * other page requirements.
+ * any new page allocations done using the specified allocation flags.
  *
  * If the page does not get brought uptodate, return -EIO.
  */
diff --git a/mm/filemap_xip.c b/mm/filemap_xip.c
index 93356cd12828..dee94297f392 100644
--- a/mm/filemap_xip.c
+++ b/mm/filemap_xip.c
@@ -263,7 +263,12 @@ found:
 							xip_pfn);
 		if (err == -ENOMEM)
 			return VM_FAULT_OOM;
-		BUG_ON(err);
+		/*
+		 * err == -EBUSY is fine, we've raced against another thread
+		 * that faulted-in the same page
+		 */
+		if (err != -EBUSY)
+			BUG_ON(err);
 		return VM_FAULT_NOPAGE;
 	} else {
 		int err, ret = VM_FAULT_OOM;
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index cc5acf9998b0..8cc11dda6a74 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -641,6 +641,7 @@ static int __do_huge_pmd_anonymous_page(struct mm_struct *mm,
 		set_pmd_at(mm, haddr, pmd, entry);
 		prepare_pmd_huge_pte(pgtable, mm);
 		add_mm_counter(mm, MM_ANONPAGES, HPAGE_PMD_NR);
+		mm->nr_ptes++;
 		spin_unlock(&mm->page_table_lock);
 	}
 
@@ -759,6 +760,7 @@ int copy_huge_pmd(struct mm_struct *dst_mm, struct mm_struct *src_mm,
 	pmd = pmd_mkold(pmd_wrprotect(pmd));
 	set_pmd_at(dst_mm, addr, dst_pmd, pmd);
 	prepare_pmd_huge_pte(pgtable, dst_mm);
+	dst_mm->nr_ptes++;
 
 	ret = 0;
 out_unlock:
@@ -857,7 +859,6 @@ static int do_huge_pmd_wp_page_fallback(struct mm_struct *mm,
 	}
 	kfree(pages);
 
-	mm->nr_ptes++;
 	smp_wmb(); /* make pte visible before pmd */
 	pmd_populate(mm, pmd, pgtable);
 	page_remove_rmap(page);
@@ -1016,6 +1017,7 @@ int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma,
 			VM_BUG_ON(page_mapcount(page) < 0);
 			add_mm_counter(tlb->mm, MM_ANONPAGES, -HPAGE_PMD_NR);
 			VM_BUG_ON(!PageHead(page));
+			tlb->mm->nr_ptes--;
 			spin_unlock(&tlb->mm->page_table_lock);
 			tlb_remove_page(tlb, page);
 			pte_free(tlb->mm, pgtable);
@@ -1310,7 +1312,6 @@ static int __split_huge_page_map(struct page *page,
 			pte_unmap(pte);
 		}
 
-		mm->nr_ptes++;
 		smp_wmb(); /* make pte visible before pmd */
 		/*
 		 * Up to this point the pmd is present and huge and
@@ -1925,7 +1926,6 @@ static void collapse_huge_page(struct mm_struct *mm,
 	set_pmd_at(mm, address, pmd, _pmd);
 	update_mmu_cache(vma, address, entry);
 	prepare_pmd_huge_pte(pgtable, mm);
-	mm->nr_ptes--;
 	spin_unlock(&mm->page_table_lock);
 
 #ifndef CONFIG_NUMA
@@ -2020,7 +2020,7 @@ static void collect_mm_slot(struct mm_slot *mm_slot)
 {
 	struct mm_struct *mm = mm_slot->mm;
 
-	VM_BUG_ON(!spin_is_locked(&khugepaged_mm_lock));
+	VM_BUG_ON(NR_CPUS != 1 && !spin_is_locked(&khugepaged_mm_lock));
 
 	if (khugepaged_test_exit(mm)) {
 		/* free mm_slot */
@@ -2048,7 +2048,7 @@ static unsigned int khugepaged_scan_mm_slot(unsigned int pages,
 	int progress = 0;
 
 	VM_BUG_ON(!pages);
-	VM_BUG_ON(!spin_is_locked(&khugepaged_mm_lock));
+	VM_BUG_ON(NR_CPUS != 1 && !spin_is_locked(&khugepaged_mm_lock));
 
 	if (khugepaged_scan.mm_slot)
 		mm_slot = khugepaged_scan.mm_slot;
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 80936a118c38..05f8fd425f69 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -901,7 +901,6 @@ retry:
 	h->resv_huge_pages += delta;
 	ret = 0;
 
-	spin_unlock(&hugetlb_lock);
 	/* Free the needed pages to the hugetlb pool */
 	list_for_each_entry_safe(page, tmp, &surplus_list, lru) {
 		if ((--needed) < 0)
@@ -915,6 +914,7 @@ retry:
 		VM_BUG_ON(page_count(page));
 		enqueue_huge_page(h, page);
 	}
+	spin_unlock(&hugetlb_lock);
 
 	/* Free unnecessary surplus pages to the buddy allocator */
 free:
@@ -2060,6 +2060,15 @@ static void hugetlb_vm_op_open(struct vm_area_struct *vma)
 		kref_get(&reservations->refs);
 }
 
+static void resv_map_put(struct vm_area_struct *vma)
+{
+	struct resv_map *reservations = vma_resv_map(vma);
+
+	if (!reservations)
+		return;
+	kref_put(&reservations->refs, resv_map_release);
+}
+
 static void hugetlb_vm_op_close(struct vm_area_struct *vma)
 {
 	struct hstate *h = hstate_vma(vma);
@@ -2075,7 +2084,7 @@ static void hugetlb_vm_op_close(struct vm_area_struct *vma)
 		reserve = (end - start) -
 			region_count(&reservations->regions, start, end);
 
-		kref_put(&reservations->refs, resv_map_release);
+		resv_map_put(vma);
 
 		if (reserve) {
 			hugetlb_acct_memory(h, -reserve);
@@ -2398,7 +2407,6 @@ retry_avoidcopy:
 		if (outside_reserve) {
 			BUG_ON(huge_pte_none(pte));
 			if (unmap_ref_private(mm, vma, old_page, address)) {
-				BUG_ON(page_count(old_page) != 1);
 				BUG_ON(huge_pte_none(pte));
 				spin_lock(&mm->page_table_lock);
 				goto retry_avoidcopy;
@@ -2679,6 +2687,7 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
 	 * so no worry about deadlock.
 	 */
 	page = pte_page(entry);
+	get_page(page);
 	if (page != pagecache_page)
 		lock_page(page);
 
@@ -2710,6 +2719,7 @@ out_page_table_lock:
 	}
 	if (page != pagecache_page)
 		unlock_page(page);
+	put_page(page);
 
 out_mutex:
 	mutex_unlock(&hugetlb_instantiation_mutex);
@@ -2876,12 +2886,16 @@ int hugetlb_reserve_pages(struct inode *inode,
 		set_vma_resv_flags(vma, HPAGE_RESV_OWNER);
 	}
 
-	if (chg < 0)
-		return chg;
+	if (chg < 0) {
+		ret = chg;
+		goto out_err;
+	}
 
 	/* There must be enough filesystem quota for the mapping */
-	if (hugetlb_get_quota(inode->i_mapping, chg))
-		return -ENOSPC;
+	if (hugetlb_get_quota(inode->i_mapping, chg)) {
+		ret = -ENOSPC;
+		goto out_err;
+	}
 
 	/*
 	 * Check enough hugepages are available for the reservation.
@@ -2890,7 +2904,7 @@ int hugetlb_reserve_pages(struct inode *inode,
 	ret = hugetlb_acct_memory(h, chg);
 	if (ret < 0) {
 		hugetlb_put_quota(inode->i_mapping, chg);
-		return ret;
+		goto out_err;
 	}
 
 	/*
@@ -2907,6 +2921,10 @@ int hugetlb_reserve_pages(struct inode *inode,
 	if (!vma || vma->vm_flags & VM_MAYSHARE)
 		region_add(&inode->i_mapping->private_list, from, to);
 	return 0;
+out_err:
+	if (vma)
+		resv_map_put(vma);
+	return ret;
 }
 
 void hugetlb_unreserve_pages(struct inode *inode, long offset, long freed)
diff --git a/mm/madvise.c b/mm/madvise.c
index 2221491ed503..deabe5f603ad 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -13,6 +13,7 @@
 #include <linux/hugetlb.h>
 #include <linux/sched.h>
 #include <linux/ksm.h>
+#include <linux/file.h>
 
 /*
  * Any behaviour which results in changes to the vma->vm_flags needs to
@@ -197,14 +198,16 @@ static long madvise_remove(struct vm_area_struct *vma,
 	struct address_space *mapping;
 	loff_t offset, endoff;
 	int error;
+	struct file *f;
 
 	*prev = NULL;	/* tell sys_madvise we drop mmap_sem */
 
 	if (vma->vm_flags & (VM_LOCKED|VM_NONLINEAR|VM_HUGETLB))
 		return -EINVAL;
 
-	if (!vma->vm_file || !vma->vm_file->f_mapping
-		|| !vma->vm_file->f_mapping->host) {
+	f = vma->vm_file;
+
+	if (!f || !f->f_mapping || !f->f_mapping->host) {
 			return -EINVAL;
 	}
 
@@ -218,9 +221,16 @@ static long madvise_remove(struct vm_area_struct *vma,
 	endoff = (loff_t)(end - vma->vm_start - 1)
 			+ ((loff_t)vma->vm_pgoff << PAGE_SHIFT);
 
-	/* vmtruncate_range needs to take i_mutex and i_alloc_sem */
+	/*
+	 * vmtruncate_range may need to take i_mutex and i_alloc_sem.
+	 * We need to explicitly grab a reference because the vma (and
+	 * hence the vma's reference to the file) can go away as soon as
+	 * we drop mmap_sem.
+	 */
+	get_file(f);
 	up_read(&current->mm->mmap_sem);
 	error = vmtruncate_range(mapping->host, offset, endoff);
+	fput(f);
 	down_read(&current->mm->mmap_sem);
 	return error;
 }
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 59ac5d6de478..ffb99b4e7527 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -3422,6 +3422,50 @@ int mem_cgroup_shmem_charge_fallback(struct page *page,
 	return ret;
 }
 
+/*
+ * At replace page cache, newpage is not under any memcg but it's on
+ * LRU. So, this function doesn't touch res_counter but handles LRU
+ * in correct way. Both pages are locked so we cannot race with uncharge.
+ */
+void mem_cgroup_replace_page_cache(struct page *oldpage,
+				  struct page *newpage)
+{
+	struct mem_cgroup *memcg;
+	struct page_cgroup *pc;
+	struct zone *zone;
+	enum charge_type type = MEM_CGROUP_CHARGE_TYPE_CACHE;
+	unsigned long flags;
+
+	if (mem_cgroup_disabled())
+		return;
+
+	pc = lookup_page_cgroup(oldpage);
+	/* fix accounting on old pages */
+	lock_page_cgroup(pc);
+	memcg = pc->mem_cgroup;
+	mem_cgroup_charge_statistics(memcg, PageCgroupCache(pc), -1);
+	ClearPageCgroupUsed(pc);
+	unlock_page_cgroup(pc);
+
+	if (PageSwapBacked(oldpage))
+		type = MEM_CGROUP_CHARGE_TYPE_SHMEM;
+
+	zone = page_zone(newpage);
+	pc = lookup_page_cgroup(newpage);
+	/*
+	 * Even if newpage->mapping was NULL before starting replacement,
+	 * the newpage may be on LRU(or pagevec for LRU) already. We lock
+	 * LRU while we overwrite pc->mem_cgroup.
+	 */
+	spin_lock_irqsave(&zone->lru_lock, flags);
+	if (PageLRU(newpage))
+		del_page_from_lru_list(zone, newpage, page_lru(newpage));
+	__mem_cgroup_commit_charge(memcg, newpage, 1, pc, type);
+	if (PageLRU(newpage))
+		add_page_to_lru_list(zone, newpage, page_lru(newpage));
+	spin_unlock_irqrestore(&zone->lru_lock, flags);
+}
+
 #ifdef CONFIG_DEBUG_VM
 static struct page_cgroup *lookup_page_cgroup_used(struct page *page)
 {
@@ -4514,6 +4558,9 @@ static void mem_cgroup_usage_unregister_event(struct cgroup *cgrp,
 	 */
 	BUG_ON(!thresholds);
 
+	if (!thresholds->primary)
+		goto unlock;
+
 	usage = mem_cgroup_usage(memcg, type == _MEMSWAP);
 
 	/* Check if a threshold crossed before removing */
@@ -4558,11 +4605,17 @@ static void mem_cgroup_usage_unregister_event(struct cgroup *cgrp,
 swap_buffers:
 	/* Swap primary and spare array */
 	thresholds->spare = thresholds->primary;
+	/* If all events are unregistered, free the spare array */
+	if (!new) {
+		kfree(thresholds->spare);
+		thresholds->spare = NULL;
+	}
+
 	rcu_assign_pointer(thresholds->primary, new);
 
 	/* To be sure that nobody uses thresholds */
 	synchronize_rcu();
-
+unlock:
 	mutex_unlock(&memcg->thresholds_lock);
 }
 
@@ -4963,9 +5016,9 @@ mem_cgroup_create(struct cgroup_subsys *ss, struct cgroup *cont)
 		int cpu;
 		enable_swap_cgroup();
 		parent = NULL;
-		root_mem_cgroup = mem;
 		if (mem_cgroup_soft_limit_tree_init())
 			goto free_out;
+		root_mem_cgroup = mem;
 		for_each_possible_cpu(cpu) {
 			struct memcg_stock_pcp *stock =
 						&per_cpu(memcg_stock, cpu);
@@ -5004,7 +5057,6 @@ mem_cgroup_create(struct cgroup_subsys *ss, struct cgroup *cont)
 	return &mem->css;
 free_out:
 	__mem_cgroup_free(mem);
-	root_mem_cgroup = NULL;
 	return ERR_PTR(error);
 }
 
@@ -5244,6 +5296,8 @@ static int mem_cgroup_count_precharge_pte_range(pmd_t *pmd,
 	spinlock_t *ptl;
 
 	split_huge_page_pmd(walk->mm, pmd);
+	if (pmd_trans_unstable(pmd))
+		return 0;
 
 	pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
 	for (; addr != end; pte++, addr += PAGE_SIZE)
@@ -5405,6 +5459,8 @@ static int mem_cgroup_move_charge_pte_range(pmd_t *pmd,
 	spinlock_t *ptl;
 
 	split_huge_page_pmd(walk->mm, pmd);
+	if (pmd_trans_unstable(pmd))
+		return 0;
 retry:
 	pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
 	for (; addr != end; addr += PAGE_SIZE) {
diff --git a/mm/memory.c b/mm/memory.c
index 95a77998ab51..d49b58aba4ae 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1228,16 +1228,24 @@ static inline unsigned long zap_pmd_range(struct mmu_gather *tlb,
 	do {
 		next = pmd_addr_end(addr, end);
 		if (pmd_trans_huge(*pmd)) {
-			if (next-addr != HPAGE_PMD_SIZE) {
+			if (next - addr != HPAGE_PMD_SIZE) {
 				VM_BUG_ON(!rwsem_is_locked(&tlb->mm->mmap_sem));
 				split_huge_page_pmd(vma->vm_mm, pmd);
 			} else if (zap_huge_pmd(tlb, vma, pmd))
-				continue;
+				goto next;
 			/* fall through */
 		}
-		if (pmd_none_or_clear_bad(pmd))
-			continue;
+		/*
+		 * Here there can be other concurrent MADV_DONTNEED or
+		 * trans huge page faults running, and if the pmd is
+		 * none or trans huge it can change under us. This is
+		 * because MADV_DONTNEED holds the mmap_sem in read
+		 * mode.
+		 */
+		if (pmd_none_or_trans_huge_or_clear_bad(pmd))
+			goto next;
 		next = zap_pte_range(tlb, vma, pmd, addr, next, details);
+next:
 		cond_resched();
 	} while (pmd++, addr = next, addr != end);
 
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index e7fb9d25c54e..3dac2d168e47 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -511,7 +511,7 @@ static inline int check_pmd_range(struct vm_area_struct *vma, pud_t *pud,
 	do {
 		next = pmd_addr_end(addr, end);
 		split_huge_page_pmd(vma->vm_mm, pmd);
-		if (pmd_none_or_clear_bad(pmd))
+		if (pmd_none_or_trans_huge_or_clear_bad(pmd))
 			continue;
 		if (check_pte_range(vma, pmd, addr, next, nodes,
 				    flags, private))
@@ -606,27 +606,6 @@ check_range(struct mm_struct *mm, unsigned long start, unsigned long end,
 	return first;
 }
 
-/* Apply policy to a single VMA */
-static int policy_vma(struct vm_area_struct *vma, struct mempolicy *new)
-{
-	int err = 0;
-	struct mempolicy *old = vma->vm_policy;
-
-	pr_debug("vma %lx-%lx/%lx vm_ops %p vm_file %p set_policy %p\n",
-		 vma->vm_start, vma->vm_end, vma->vm_pgoff,
-		 vma->vm_ops, vma->vm_file,
-		 vma->vm_ops ? vma->vm_ops->set_policy : NULL);
-
-	if (vma->vm_ops && vma->vm_ops->set_policy)
-		err = vma->vm_ops->set_policy(vma, new);
-	if (!err) {
-		mpol_get(new);
-		vma->vm_policy = new;
-		mpol_put(old);
-	}
-	return err;
-}
-
 /* Step 2: apply policy to a range and do splits. */
 static int mbind_range(struct mm_struct *mm, unsigned long start,
 		       unsigned long end, struct mempolicy *new_pol)
@@ -666,9 +645,23 @@ static int mbind_range(struct mm_struct *mm, unsigned long start,
 			if (err)
 				goto out;
 		}
-		err = policy_vma(vma, new_pol);
-		if (err)
-			goto out;
+
+		/*
+		 * Apply policy to a single VMA. The reference counting of
+		 * policy for vma_policy linkages has already been handled by
+		 * vma_merge and split_vma as necessary. If this is a shared
+		 * policy then ->set_policy will increment the reference count
+		 * for an sp node.
+		 */
+		pr_debug("vma %lx-%lx/%lx vm_ops %p vm_file %p set_policy %p\n",
+			vma->vm_start, vma->vm_end, vma->vm_pgoff,
+			vma->vm_ops, vma->vm_file,
+			vma->vm_ops ? vma->vm_ops->set_policy : NULL);
+		if (vma->vm_ops && vma->vm_ops->set_policy) {
+			err = vma->vm_ops->set_policy(vma, new_pol);
+			if (err)
+				goto out;
+		}
 	}
 
  out:
diff --git a/mm/mincore.c b/mm/mincore.c
index a4e6b9d75c76..117ff5492795 100644
--- a/mm/mincore.c
+++ b/mm/mincore.c
@@ -161,7 +161,7 @@ static void mincore_pmd_range(struct vm_area_struct *vma, pud_t *pud,
 			}
 			/* fall through */
 		}
-		if (pmd_none_or_clear_bad(pmd))
+		if (pmd_none_or_trans_huge_or_clear_bad(pmd))
 			mincore_unmapped_range(vma, addr, next, vec);
 		else
 			mincore_pte_range(vma, pmd, addr, next, vec);
diff --git a/mm/nobootmem.c b/mm/nobootmem.c
index 6e93dc7f2586..e39e3efe4a43 100644
--- a/mm/nobootmem.c
+++ b/mm/nobootmem.c
@@ -83,8 +83,7 @@ void __init free_bootmem_late(unsigned long addr, unsigned long size)
 
 static void __init __free_pages_memory(unsigned long start, unsigned long end)
 {
-	int i;
-	unsigned long start_aligned, end_aligned;
+	unsigned long i, start_aligned, end_aligned;
 	int order = ilog2(BITS_PER_LONG);
 
 	start_aligned = (start + (BITS_PER_LONG - 1)) & ~(BITS_PER_LONG - 1);
diff --git a/mm/nommu.c b/mm/nommu.c
index 9edc897a3970..5ff9b35883ee 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -697,9 +697,11 @@ static void add_vma_to_mm(struct mm_struct *mm, struct vm_area_struct *vma)
 	if (vma->vm_file) {
 		mapping = vma->vm_file->f_mapping;
 
+		mutex_lock(&mapping->i_mmap_mutex);
 		flush_dcache_mmap_lock(mapping);
 		vma_prio_tree_insert(vma, &mapping->i_mmap);
 		flush_dcache_mmap_unlock(mapping);
+		mutex_unlock(&mapping->i_mmap_mutex);
 	}
 
 	/* add the VMA to the tree */
@@ -761,9 +763,11 @@ static void delete_vma_from_mm(struct vm_area_struct *vma)
 	if (vma->vm_file) {
 		mapping = vma->vm_file->f_mapping;
 
+		mutex_lock(&mapping->i_mmap_mutex);
 		flush_dcache_mmap_lock(mapping);
 		vma_prio_tree_remove(vma, &mapping->i_mmap);
 		flush_dcache_mmap_unlock(mapping);
+		mutex_unlock(&mapping->i_mmap_mutex);
 	}
 
 	/* remove from the MM's tree and list */
@@ -776,8 +780,6 @@ static void delete_vma_from_mm(struct vm_area_struct *vma)
 
 	if (vma->vm_next)
 		vma->vm_next->vm_prev = vma->vm_prev;
-
-	vma->vm_mm = NULL;
 }
 
 /*
@@ -2061,6 +2063,7 @@ int nommu_shrink_inode_mappings(struct inode *inode, size_t size,
 	high = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
 
 	down_write(&nommu_region_sem);
+	mutex_lock(&inode->i_mapping->i_mmap_mutex);
 
 	/* search for VMAs that fall within the dead zone */
 	vma_prio_tree_foreach(vma, &iter, &inode->i_mapping->i_mmap,
@@ -2068,6 +2071,7 @@ int nommu_shrink_inode_mappings(struct inode *inode, size_t size,
 		/* found one - only interested if it's shared out of the page
 		 * cache */
 		if (vma->vm_flags & VM_SHARED) {
+			mutex_unlock(&inode->i_mapping->i_mmap_mutex);
 			up_write(&nommu_region_sem);
 			return -ETXTBSY; /* not quite true, but near enough */
 		}
@@ -2095,6 +2099,7 @@ int nommu_shrink_inode_mappings(struct inode *inode, size_t size,
 		}
 	}
 
+	mutex_unlock(&inode->i_mapping->i_mmap_mutex);
 	up_write(&nommu_region_sem);
 	return 0;
 }
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 8093fc766d16..7c72487ca459 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -162,7 +162,7 @@ static bool oom_unkillable_task(struct task_struct *p,
 unsigned int oom_badness(struct task_struct *p, struct mem_cgroup *mem,
 		      const nodemask_t *nodemask, unsigned long totalpages)
 {
-	int points;
+	long points;
 
 	if (oom_unkillable_task(p, mem, nodemask))
 		return 0;
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index afa80ed07253..e2f474da7ee2 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5588,6 +5588,17 @@ __count_immobile_pages(struct zone *zone, struct page *page, int count)
 bool is_pageblock_removable_nolock(struct page *page)
 {
 	struct zone *zone = page_zone(page);
+	unsigned long pfn = page_to_pfn(page);
+
+	/*
+	 * We have to be careful here because we are iterating over memory
+	 * sections which are not zone aware so we might end up outside of
+	 * the zone but still within the section.
+	 */
+	if (!zone || zone->zone_start_pfn > pfn ||
+			zone->zone_start_pfn + zone->spanned_pages <= pfn)
+		return false;
+
 	return __count_immobile_pages(zone, page, 0);
 }
 
diff --git a/mm/pagewalk.c b/mm/pagewalk.c
index c3450d533611..87eac0ea2bf1 100644
--- a/mm/pagewalk.c
+++ b/mm/pagewalk.c
@@ -59,7 +59,7 @@ again:
 			continue;
 
 		split_huge_page_pmd(walk->mm, pmd);
-		if (pmd_none_or_clear_bad(pmd))
+		if (pmd_none_or_trans_huge_or_clear_bad(pmd))
 			goto again;
 		err = walk_pte_range(pmd, addr, next, walk);
 		if (err)
diff --git a/mm/percpu.c b/mm/percpu.c
index 93b5a7c96a7e..af0cc7a58f9f 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1011,9 +1011,11 @@ phys_addr_t per_cpu_ptr_to_phys(void *addr)
 		if (!is_vmalloc_addr(addr))
 			return __pa(addr);
 		else
-			return page_to_phys(vmalloc_to_page(addr));
+			return page_to_phys(vmalloc_to_page(addr)) +
+			       offset_in_page(addr);
 	} else
-		return page_to_phys(pcpu_addr_to_page(addr));
+		return page_to_phys(pcpu_addr_to_page(addr)) +
+		       offset_in_page(addr);
 }
 
 /**
@@ -1628,6 +1630,16 @@ int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size,
 		areas[group] = ptr;
 
 		base = min(ptr, base);
+	}
+
+	/*
+	 * Copy data and free unused parts.  This should happen after all
+	 * allocations are complete; otherwise, we may end up with
+	 * overlapping groups.
+	 */
+	for (group = 0; group < ai->nr_groups; group++) {
+		struct pcpu_group_info *gi = &ai->groups[group];
+		void *ptr = areas[group];
 
 		for (i = 0; i < gi->nr_units; i++, ptr += ai->unit_size) {
 			if (gi->cpu_map[i] == NR_CPUS) {
diff --git a/mm/slub.c b/mm/slub.c
index 0d0901ebaea2..10ab2335e2ea 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3439,13 +3439,14 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size,
 		if (kmem_cache_open(s, n,
 				size, align, flags, ctor)) {
 			list_add(&s->list, &slab_caches);
+			up_write(&slub_lock);
 			if (sysfs_slab_add(s)) {
+				down_write(&slub_lock);
 				list_del(&s->list);
 				kfree(n);
 				kfree(s);
 				goto err;
 			}
-			up_write(&slub_lock);
 			return s;
 		}
 		kfree(n);
diff --git a/mm/sparse.c b/mm/sparse.c
index aa64b12831a2..4cd05e5f2f43 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -353,29 +353,21 @@ static void __init sparse_early_usemaps_alloc_node(unsigned long**usemap_map,
 
 	usemap = sparse_early_usemaps_alloc_pgdat_section(NODE_DATA(nodeid),
 								 usemap_count);
-	if (usemap) {
-		for (pnum = pnum_begin; pnum < pnum_end; pnum++) {
-			if (!present_section_nr(pnum))
-				continue;
-			usemap_map[pnum] = usemap;
-			usemap += size;
+	if (!usemap) {
+		usemap = alloc_bootmem_node(NODE_DATA(nodeid), size * usemap_count);
+		if (!usemap) {
+			printk(KERN_WARNING "%s: allocation failed\n", __func__);
+			return;
 		}
-		return;
 	}
 
-	usemap = alloc_bootmem_node(NODE_DATA(nodeid), size * usemap_count);
-	if (usemap) {
-		for (pnum = pnum_begin; pnum < pnum_end; pnum++) {
-			if (!present_section_nr(pnum))
-				continue;
-			usemap_map[pnum] = usemap;
-			usemap += size;
-			check_usemap_section_nr(nodeid, usemap_map[pnum]);
-		}
-		return;
+	for (pnum = pnum_begin; pnum < pnum_end; pnum++) {
+		if (!present_section_nr(pnum))
+			continue;
+		usemap_map[pnum] = usemap;
+		usemap += size;
+		check_usemap_section_nr(nodeid, usemap_map[pnum]);
 	}
-
-	printk(KERN_WARNING "%s: allocation failed\n", __func__);
 }
 
 #ifndef CONFIG_SPARSEMEM_VMEMMAP
diff --git a/mm/swap.c b/mm/swap.c
index 87627f181c3f..4a1fc6db89e8 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -667,7 +667,7 @@ void lru_add_page_tail(struct zone* zone,
 	VM_BUG_ON(!PageHead(page));
 	VM_BUG_ON(PageCompound(page_tail));
 	VM_BUG_ON(PageLRU(page_tail));
-	VM_BUG_ON(!spin_is_locked(&zone->lru_lock));
+	VM_BUG_ON(NR_CPUS != 1 && !spin_is_locked(&zone->lru_lock));
 
 	SetPageLRU(page_tail);
 
diff --git a/mm/swap_state.c b/mm/swap_state.c
index 46680461785b..10e9198778cf 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -28,7 +28,7 @@
  */
 static const struct address_space_operations swap_aops = {
 	.writepage	= swap_writepage,
-	.set_page_dirty	= __set_page_dirty_nobuffers,
+	.set_page_dirty	= __set_page_dirty_no_writeback,
 	.migratepage	= migrate_page,
 };
 
diff --git a/mm/swapfile.c b/mm/swapfile.c
index ff8dc1a18cb4..c8f4338848df 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -932,9 +932,7 @@ static inline int unuse_pmd_range(struct vm_area_struct *vma, pud_t *pud,
 	pmd = pmd_offset(pud, addr);
 	do {
 		next = pmd_addr_end(addr, end);
-		if (unlikely(pmd_trans_huge(*pmd)))
-			continue;
-		if (pmd_none_or_clear_bad(pmd))
+		if (pmd_none_or_trans_huge_or_clear_bad(pmd))
 			continue;
 		ret = unuse_pte_range(vma, pmd, addr, next, entry, page);
 		if (ret)
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 43b44dbaddaf..bdb70042c123 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -256,7 +256,7 @@ struct vmap_area {
 	struct rb_node rb_node;		/* address sorted rbtree */
 	struct list_head list;		/* address sorted list */
 	struct list_head purge_list;	/* "lazy purge" list */
-	void *private;
+	struct vm_struct *vm;
 	struct rcu_head rcu_head;
 };
 
@@ -1174,9 +1174,10 @@ void __init vmalloc_init(void)
 	/* Import existing vmlist entries. */
 	for (tmp = vmlist; tmp; tmp = tmp->next) {
 		va = kzalloc(sizeof(struct vmap_area), GFP_NOWAIT);
-		va->flags = tmp->flags | VM_VM_AREA;
+		va->flags = VM_VM_AREA;
 		va->va_start = (unsigned long)tmp->addr;
 		va->va_end = va->va_start + tmp->size;
+		va->vm = tmp;
 		__insert_vmap_area(va);
 	}
 
@@ -1274,7 +1275,7 @@ static void setup_vmalloc_vm(struct vm_struct *vm, struct vmap_area *va,
 	vm->addr = (void *)va->va_start;
 	vm->size = va->va_end - va->va_start;
 	vm->caller = caller;
-	va->private = vm;
+	va->vm = vm;
 	va->flags |= VM_VM_AREA;
 }
 
@@ -1397,7 +1398,7 @@ static struct vm_struct *find_vm_area(const void *addr)
 
 	va = find_vmap_area((unsigned long)addr);
 	if (va && va->flags & VM_VM_AREA)
-		return va->private;
+		return va->vm;
 
 	return NULL;
 }
@@ -1416,7 +1417,7 @@ struct vm_struct *remove_vm_area(const void *addr)
 
 	va = find_vmap_area((unsigned long)addr);
 	if (va && va->flags & VM_VM_AREA) {
-		struct vm_struct *vm = va->private;
+		struct vm_struct *vm = va->vm;
 
 		if (!(vm->flags & VM_UNLIST)) {
 			struct vm_struct *tmp, **p;
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 6072d74a16f5..769935d17c01 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -665,7 +665,7 @@ static enum page_references page_check_references(struct page *page,
 		return PAGEREF_RECLAIM;
 
 	if (referenced_ptes) {
-		if (PageAnon(page))
+		if (PageSwapBacked(page))
 			return PAGEREF_ACTIVATE;
 		/*
 		 * All mapped pages start out with page table