Merge branch 'akpm' (patches from Andrew)

Merge updates from Andrew Morton:

 - a few misc bits

 - ocfs2

 - most(?) of MM

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (125 commits)
  thp: fix comments of __pmd_trans_huge_lock()
  cgroup: remove unnecessary 0 check from css_from_id()
  cgroup: fix idr leak for the first cgroup root
  mm: memcontrol: fix documentation for compound parameter
  mm: memcontrol: remove BUG_ON in uncharge_list
  mm: fix build warnings in <linux/compaction.h>
  mm, thp: convert from optimistic swapin collapsing to conservative
  mm, thp: fix comment inconsistency for swapin readahead functions
  thp: update Documentation/{vm/transhuge,filesystems/proc}.txt
  shmem: split huge pages beyond i_size under memory pressure
  thp: introduce CONFIG_TRANSPARENT_HUGE_PAGECACHE
  khugepaged: add support of collapse for tmpfs/shmem pages
  shmem: make shmem_inode_info::lock irq-safe
  khugepaged: move up_read(mmap_sem) out of khugepaged_alloc_page()
  thp: extract khugepaged from mm/huge_memory.c
  shmem, thp: respect MADV_{NO,}HUGEPAGE for file mappings
  shmem: add huge pages support
  shmem: get_unmapped_area align huge page
  shmem: prepare huge= mount option and sysfs knob
  mm, rmap: account shmem thp pages
  ...

1 files changed, 21 insertions, 15 deletions

diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index f0a7a0320300..92ce91c03cd0 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -1,20 +1,12 @@
 #ifndef _LINUX_HUGE_MM_H
 #define _LINUX_HUGE_MM_H
 
-extern int do_huge_pmd_anonymous_page(struct mm_struct *mm,
-				      struct vm_area_struct *vma,
-				      unsigned long address, pmd_t *pmd,
-				      unsigned int flags);
+extern int do_huge_pmd_anonymous_page(struct fault_env *fe);
 extern int copy_huge_pmd(struct mm_struct *dst_mm, struct mm_struct *src_mm,
 			 pmd_t *dst_pmd, pmd_t *src_pmd, unsigned long addr,
 			 struct vm_area_struct *vma);
-extern void huge_pmd_set_accessed(struct mm_struct *mm,
-				  struct vm_area_struct *vma,
-				  unsigned long address, pmd_t *pmd,
-				  pmd_t orig_pmd, int dirty);
-extern int do_huge_pmd_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
-			       unsigned long address, pmd_t *pmd,
-			       pmd_t orig_pmd);
+extern void huge_pmd_set_accessed(struct fault_env *fe, pmd_t orig_pmd);
+extern int do_huge_pmd_wp_page(struct fault_env *fe, pmd_t orig_pmd);
 extern struct page *follow_trans_huge_pmd(struct vm_area_struct *vma,
 					  unsigned long addr,
 					  pmd_t *pmd,
@@ -49,6 +41,18 @@ enum transparent_hugepage_flag {
 #endif
 };
 
+struct kobject;
+struct kobj_attribute;
+
+extern ssize_t single_hugepage_flag_store(struct kobject *kobj,
+				 struct kobj_attribute *attr,
+				 const char *buf, size_t count,
+				 enum transparent_hugepage_flag flag);
+extern ssize_t single_hugepage_flag_show(struct kobject *kobj,
+				struct kobj_attribute *attr, char *buf,
+				enum transparent_hugepage_flag flag);
+extern struct kobj_attribute shmem_enabled_attr;
+
 #define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT)
 #define HPAGE_PMD_NR (1<<HPAGE_PMD_ORDER)
 
@@ -134,8 +138,7 @@ static inline int hpage_nr_pages(struct page *page)
 	return 1;
 }
 
-extern int do_huge_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vma,
-				unsigned long addr, pmd_t pmd, pmd_t *pmdp);
+extern int do_huge_pmd_numa_page(struct fault_env *fe, pmd_t orig_pmd);
 
 extern struct page *huge_zero_page;
 
@@ -152,6 +155,8 @@ static inline bool is_huge_zero_pmd(pmd_t pmd)
 struct page *get_huge_zero_page(void);
 void put_huge_zero_page(void);
 
+#define mk_huge_pmd(page, prot) pmd_mkhuge(mk_pmd(page, prot))
+
 #else /* CONFIG_TRANSPARENT_HUGEPAGE */
 #define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; })
 #define HPAGE_PMD_MASK ({ BUILD_BUG(); 0; })
@@ -161,6 +166,8 @@ void put_huge_zero_page(void);
 
 #define transparent_hugepage_enabled(__vma) 0
 
+static inline void prep_transhuge_page(struct page *page) {}
+
 #define transparent_hugepage_flags 0UL
 static inline int
 split_huge_page_to_list(struct page *page, struct list_head *list)
@@ -196,8 +203,7 @@ static inline spinlock_t *pmd_trans_huge_lock(pmd_t *pmd,
 	return NULL;
 }
 
-static inline int do_huge_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vma,
-					unsigned long addr, pmd_t pmd, pmd_t *pmdp)
+static inline int do_huge_pmd_numa_page(struct fault_env *fe, pmd_t orig_pmd)
 {
 	return 0;
 }