10 files changed, 72 insertions, 62 deletions

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 1deb2a73c2da..2312e850aab8 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -238,7 +238,6 @@ extern int acpi_paddr_to_node(u64 start_addr, u64 size);
 extern int pnpacpi_disabled;
 
 #define PXM_INVAL       (-1)
-#define NID_INVAL       (-1)
 
 int acpi_check_resource_conflict(const struct resource *res);
 
diff --git a/include/linux/fault-inject.h b/include/linux/fault-inject.h
index 3ff060ac7810..c6f996f2abb6 100644
--- a/include/linux/fault-inject.h
+++ b/include/linux/fault-inject.h
@@ -25,10 +25,6 @@ struct fault_attr {
         unsigned long reject_end;
 
         unsigned long count;
-
-#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
-        struct dentry *dir;
-#endif
 };
 
 #define FAULT_ATTR_INITIALIZER {                                \
@@ -45,19 +41,15 @@ bool should_fail(struct fault_attr *attr, ssize_t size);
 
 #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
 
-int init_fault_attr_dentries(struct fault_attr *attr, const char *name);
-void cleanup_fault_attr_dentries(struct fault_attr *attr);
+struct dentry *fault_create_debugfs_attr(const char *name,
+                        struct dentry *parent, struct fault_attr *attr);
 
 #else /* CONFIG_FAULT_INJECTION_DEBUG_FS */
 
-static inline int init_fault_attr_dentries(struct fault_attr *attr,
-                                          const char *name)
-{
-        return -ENODEV;
-}
-
-static inline void cleanup_fault_attr_dentries(struct fault_attr *attr)
+static inline struct dentry *fault_create_debugfs_attr(const char *name,
+                        struct dentry *parent, struct fault_attr *attr)
 {
+        return ERR_PTR(-ENODEV);
 }
 
 #endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index cb4089254f01..3a76faf6a3ee 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -92,7 +92,7 @@ struct vm_area_struct;
  */
 #define __GFP_NOTRACK_FALSE_POSITIVE (__GFP_NOTRACK)
 
-#define __GFP_BITS_SHIFT 23     /* Room for 23 __GFP_FOO bits */
+#define __GFP_BITS_SHIFT 24     /* Room for N __GFP_FOO bits */
 #define __GFP_BITS_MASK ((__force gfp_t)((1 << __GFP_BITS_SHIFT) - 1))
 
 /* This equals 0, but use constants in case they ever change */
diff --git a/include/linux/idr.h b/include/linux/idr.h
index 13a801f3d028..255491cf522e 100644
--- a/include/linux/idr.h
+++ b/include/linux/idr.h
@@ -146,6 +146,10 @@ void ida_remove(struct ida *ida, int id);
 void ida_destroy(struct ida *ida);
 void ida_init(struct ida *ida);
 
+int ida_simple_get(struct ida *ida, unsigned int start, unsigned int end,
+                   gfp_t gfp_mask);
+void ida_simple_remove(struct ida *ida, unsigned int id);
+
 void __init idr_init_cache(void);
 
 #endif /* __IDR_H__ */
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index b96600786913..3b535db00a94 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -86,8 +86,6 @@ extern void mem_cgroup_uncharge_end(void);
 
 extern void mem_cgroup_uncharge_page(struct page *page);
 extern void mem_cgroup_uncharge_cache_page(struct page *page);
-extern int mem_cgroup_shmem_charge_fallback(struct page *page,
-                        struct mm_struct *mm, gfp_t gfp_mask);
 
 extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask);
 int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem);
@@ -225,12 +223,6 @@ static inline void mem_cgroup_uncharge_cache_page(struct page *page)
 {
 }
 
-static inline int mem_cgroup_shmem_charge_fallback(struct page *page,
-                        struct mm_struct *mm, gfp_t gfp_mask)
-{
-        return 0;
-}
-
 static inline void mem_cgroup_add_lru_list(struct page *page, int lru)
 {
 }
diff --git a/include/linux/mfd/aat2870.h b/include/linux/mfd/aat2870.h
index 89212df05622..f7316c29bdec 100644
--- a/include/linux/mfd/aat2870.h
+++ b/include/linux/mfd/aat2870.h
@@ -89,7 +89,7 @@ enum aat2870_id {
 
 /* Backlight current magnitude (mA) */
 enum aat2870_current {
-        AAT2870_CURRENT_0_45,
+        AAT2870_CURRENT_0_45 = 1,
         AAT2870_CURRENT_0_90,
         AAT2870_CURRENT_1_80,
         AAT2870_CURRENT_2_70,
diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h
index 23241c2fecce..9d4539c52e53 100644
--- a/include/linux/radix-tree.h
+++ b/include/linux/radix-tree.h
@@ -39,7 +39,15 @@
  * when it is shrunk, before we rcu free the node. See shrink code for
  * details.
  */
-#define RADIX_TREE_INDIRECT_PTR 1
+#define RADIX_TREE_INDIRECT_PTR         1
+/*
+ * A common use of the radix tree is to store pointers to struct pages;
+ * but shmem/tmpfs needs also to store swap entries in the same tree:
+ * those are marked as exceptional entries to distinguish them.
+ * EXCEPTIONAL_ENTRY tests the bit, EXCEPTIONAL_SHIFT shifts content past it.
+ */
+#define RADIX_TREE_EXCEPTIONAL_ENTRY    2
+#define RADIX_TREE_EXCEPTIONAL_SHIFT    2
 
 #define radix_tree_indirect_to_ptr(ptr) \
         radix_tree_indirect_to_ptr((void __force *)(ptr))
@@ -174,6 +182,28 @@ static inline int radix_tree_deref_retry(void *arg)
 }
 
 /**
+ * radix_tree_exceptional_entry - radix_tree_deref_slot gave exceptional entry?
+ * @arg:        value returned by radix_tree_deref_slot
+ * Returns:     0 if well-aligned pointer, non-0 if exceptional entry.
+ */
+static inline int radix_tree_exceptional_entry(void *arg)
+{
+        /* Not unlikely because radix_tree_exception often tested first */
+        return (unsigned long)arg & RADIX_TREE_EXCEPTIONAL_ENTRY;
+}
+
+/**
+ * radix_tree_exception - radix_tree_deref_slot returned either exception?
+ * @arg:        value returned by radix_tree_deref_slot
+ * Returns:     0 if well-aligned pointer, non-0 if either kind of exception.
+ */
+static inline int radix_tree_exception(void *arg)
+{
+        return unlikely((unsigned long)arg &
+                (RADIX_TREE_INDIRECT_PTR | RADIX_TREE_EXCEPTIONAL_ENTRY));
+}
+
+/**
  * radix_tree_replace_slot      - replace item in a slot
  * @pslot:      pointer to slot, returned by radix_tree_lookup_slot
  * @item:       new item to store in the slot.
@@ -194,8 +224,8 @@ void *radix_tree_delete(struct radix_tree_root *, unsigned long);
 unsigned int
 radix_tree_gang_lookup(struct radix_tree_root *root, void **results,
                         unsigned long first_index, unsigned int max_items);
-unsigned int
-radix_tree_gang_lookup_slot(struct radix_tree_root *root, void ***results,
+unsigned int radix_tree_gang_lookup_slot(struct radix_tree_root *root,
+                        void ***results, unsigned long *indices,
                         unsigned long first_index, unsigned int max_items);
 unsigned long radix_tree_next_hole(struct radix_tree_root *root,
                                 unsigned long index, unsigned long max_scan);
@@ -222,6 +252,7 @@ unsigned long radix_tree_range_tag_if_tagged(struct radix_tree_root *root,
                 unsigned long nr_to_tag,
                 unsigned int fromtag, unsigned int totag);
 int radix_tree_tagged(struct radix_tree_root *root, unsigned int tag);
+unsigned long radix_tree_locate_item(struct radix_tree_root *root, void *item);
 
 static inline void radix_tree_preload_end(void)
 {
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index aa08fa8fd79b..9291ac3cc627 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -8,22 +8,15 @@
 
 /* inode in-kernel data */
 
-#define SHMEM_NR_DIRECT 16
-
-#define SHMEM_SYMLINK_INLINE_LEN (SHMEM_NR_DIRECT * sizeof(swp_entry_t))
-
 struct shmem_inode_info {
         spinlock_t              lock;
         unsigned long           flags;
         unsigned long           alloced;        /* data pages alloced to file */
-        unsigned long           swapped;        /* subtotal assigned to swap */
-        unsigned long           next_index;     /* highest alloced index + 1 */
-        struct shared_policy    policy;         /* NUMA memory alloc policy */
-        struct page             *i_indirect;    /* top indirect blocks page */
         union {
-                swp_entry_t     i_direct[SHMEM_NR_DIRECT]; /* first blocks */
-                char            inline_symlink[SHMEM_SYMLINK_INLINE_LEN];
+                unsigned long   swapped;        /* subtotal assigned to swap */
+                char            *symlink;       /* unswappable short symlink */
         };
+        struct shared_policy    policy;         /* NUMA memory alloc policy */
         struct list_head        swaplist;       /* chain of maybes on swap */
         struct list_head        xattr_list;     /* list of shmem_xattr */
         struct inode            vfs_inode;
@@ -49,7 +42,7 @@ static inline struct shmem_inode_info *SHMEM_I(struct inode *inode)
 /*
  * Functions in mm/shmem.c called directly from elsewhere:
  */
-extern int init_tmpfs(void);
+extern int shmem_init(void);
 extern int shmem_fill_super(struct super_block *sb, void *data, int silent);
 extern struct file *shmem_file_setup(const char *name,
                                         loff_t size, unsigned long flags);
@@ -59,8 +52,6 @@ extern struct page *shmem_read_mapping_page_gfp(struct address_space *mapping,
                                         pgoff_t index, gfp_t gfp_mask);
 extern void shmem_truncate_range(struct inode *inode, loff_t start, loff_t end);
 extern int shmem_unuse(swp_entry_t entry, struct page *page);
-extern void mem_cgroup_get_shmem_target(struct inode *inode, pgoff_t pgoff,
-                                        struct page **pagep, swp_entry_t *ent);
 
 static inline struct page *shmem_read_mapping_page(
                                 struct address_space *mapping, pgoff_t index)
diff --git a/include/linux/swapops.h b/include/linux/swapops.h
index cd42e30b7c6e..2189d3ffc85d 100644
--- a/include/linux/swapops.h
+++ b/include/linux/swapops.h
@@ -1,3 +1,8 @@
+#ifndef _LINUX_SWAPOPS_H
+#define _LINUX_SWAPOPS_H
+
+#include <linux/radix-tree.h>
+
 /*
  * swapcache pages are stored in the swapper_space radix tree.  We want to
  * get good packing density in that tree, so the index should be dense in
@@ -76,6 +81,22 @@ static inline pte_t swp_entry_to_pte(swp_entry_t entry)
         return __swp_entry_to_pte(arch_entry);
 }
 
+static inline swp_entry_t radix_to_swp_entry(void *arg)
+{
+        swp_entry_t entry;
+
+        entry.val = (unsigned long)arg >> RADIX_TREE_EXCEPTIONAL_SHIFT;
+        return entry;
+}
+
+static inline void *swp_to_radix_entry(swp_entry_t entry)
+{
+        unsigned long value;
+
+        value = entry.val << RADIX_TREE_EXCEPTIONAL_SHIFT;
+        return (void *)(value | RADIX_TREE_EXCEPTIONAL_ENTRY);
+}
+
 #ifdef CONFIG_MIGRATION
 static inline swp_entry_t make_migration_entry(struct page *page, int write)
 {
@@ -169,3 +190,5 @@ static inline int non_swap_entry(swp_entry_t entry)
         return 0;
 }
 #endif
+
+#endif /* _LINUX_SWAPOPS_H */
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index d3ec89fb4122..47b4a27e6e97 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -85,22 +85,6 @@ struct thermal_cooling_device {
                                 ((long)t-2732+5)/10 : ((long)t-2732-5)/10)
 #define CELSIUS_TO_KELVIN(t)    ((t)*10+2732)
 
-#if defined(CONFIG_THERMAL_HWMON)
-/* thermal zone devices with the same type share one hwmon device */
-struct thermal_hwmon_device {
-        char type[THERMAL_NAME_LENGTH];
-        struct device *device;
-        int count;
-        struct list_head tz_list;
-        struct list_head node;
-};
-
-struct thermal_hwmon_attr {
-        struct device_attribute attr;
-        char name[16];
-};
-#endif
-
 struct thermal_zone_device {
         int id;
         char type[THERMAL_NAME_LENGTH];
@@ -120,12 +104,6 @@ struct thermal_zone_device {
         struct mutex lock;      /* protect cooling devices list */
         struct list_head node;
         struct delayed_work poll_queue;
-#if defined(CONFIG_THERMAL_HWMON)
-        struct list_head hwmon_node;
-        struct thermal_hwmon_device *hwmon;
-        struct thermal_hwmon_attr temp_input;   /* hwmon sys attr */
-        struct thermal_hwmon_attr temp_crit;    /* hwmon sys attr */
-#endif
 };
 /* Adding event notification support elements */
 #define THERMAL_GENL_FAMILY_NAME                "thermal_event"