12 files changed, 17 insertions, 24 deletions

diff --git a/fs/proc/array.c b/fs/proc/array.c
index aa8637b81028..e51f2ec2c5e5 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -68,7 +68,6 @@
 #include <linux/hugetlb.h>
 #include <linux/pagemap.h>
 #include <linux/swap.h>
-#include <linux/slab.h>
 #include <linux/smp.h>
 #include <linux/signal.h>
 #include <linux/highmem.h>
diff --git a/fs/proc/base.c b/fs/proc/base.c
index b1f6e62773d3..7621db800a74 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -81,6 +81,7 @@
 #include <linux/elf.h>
 #include <linux/pid_namespace.h>
 #include <linux/fs_struct.h>
+#include <linux/slab.h>
 #include "internal.h"
 
 /* NOTE:
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 08f4d71dacd7..43c127490606 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -13,6 +13,7 @@
 #include <linux/proc_fs.h>
 #include <linux/stat.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/mount.h>
 #include <linux/init.h>
 #include <linux/idr.h>
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 445a02bcaab3..d35b23238fb1 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -18,6 +18,7 @@
 #include <linux/module.h>
 #include <linux/smp_lock.h>
 #include <linux/sysctl.h>
+#include <linux/slab.h>
 
 #include <asm/system.h>
 #include <asm/uaccess.h>
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index b442dac8f5f9..19979a2ce272 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -19,6 +19,7 @@
 #include <linux/highmem.h>
 #include <linux/bootmem.h>
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
 #include <linux/list.h>
diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c
index 9fe7d7ebe115..b1822dde55c2 100644
--- a/fs/proc/nommu.c
+++ b/fs/proc/nommu.c
@@ -21,7 +21,6 @@
 #include <linux/mmzone.h>
 #include <linux/pagemap.h>
 #include <linux/swap.h>
-#include <linux/slab.h>
 #include <linux/smp.h>
 #include <linux/seq_file.h>
 #include <linux/hugetlb.h>
diff --git a/fs/proc/proc_devtree.c b/fs/proc/proc_devtree.c
index f8650dce74fb..ce94801f48ca 100644
--- a/fs/proc/proc_devtree.c
+++ b/fs/proc/proc_devtree.c
@@ -12,6 +12,7 @@
 #include <linux/string.h>
 #include <linux/of.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <asm/prom.h>
 #include <asm/uaccess.h>
 #include "internal.h"
diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c
index 04d1270f1c38..9020ac15baaa 100644
--- a/fs/proc/proc_net.c
+++ b/fs/proc/proc_net.c
@@ -14,6 +14,7 @@
 #include <linux/time.h>
 #include <linux/proc_fs.h>
 #include <linux/stat.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/sched.h>
 #include <linux/module.h>
diff --git a/fs/proc/stat.c b/fs/proc/stat.c
index b9b7aad2003d..bf31b03fc275 100644
--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@ -1,6 +1,5 @@
 #include <linux/cpumask.h>
 #include <linux/fs.h>
-#include <linux/gfp.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/kernel_stat.h>
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 096273984c3b..070553427dd5 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -4,6 +4,7 @@
 #include <linux/seq_file.h>
 #include <linux/highmem.h>
 #include <linux/ptrace.h>
+#include <linux/slab.h>
 #include <linux/pagemap.h>
 #include <linux/mempolicy.h>
 #include <linux/swap.h>
@@ -661,31 +662,18 @@ static u64 huge_pte_to_pagemap_entry(pte_t pte, int offset)
         return pme;
 }
 
-static int pagemap_hugetlb_range(pte_t *pte, unsigned long addr,
-                                 unsigned long end, struct mm_walk *walk)
+/* This function walks within one hugetlb entry in the single call */
+static int pagemap_hugetlb_range(pte_t *pte, unsigned long hmask,
+                                 unsigned long addr, unsigned long end,
+                                 struct mm_walk *walk)
 {
-        struct vm_area_struct *vma;
         struct pagemapread *pm = walk->private;
-        struct hstate *hs = NULL;
         int err = 0;
+        u64 pfn;
 
-        vma = find_vma(walk->mm, addr);
-        if (vma)
-                hs = hstate_vma(vma);
         for (; addr != end; addr += PAGE_SIZE) {
-                u64 pfn = PM_NOT_PRESENT;
-
-                if (vma && (addr >= vma->vm_end)) {
-                        vma = find_vma(walk->mm, addr);
-                        if (vma)
-                                hs = hstate_vma(vma);
-                }
-
-                if (vma && (vma->vm_start <= addr) && is_vm_hugetlb_page(vma)) {
-                        /* calculate pfn of the "raw" page in the hugepage. */
-                        int offset = (addr & ~huge_page_mask(hs)) >> PAGE_SHIFT;
-                        pfn = huge_pte_to_pagemap_entry(*pte, offset);
-                }
+                int offset = (addr & ~hmask) >> PAGE_SHIFT;
+                pfn = huge_pte_to_pagemap_entry(*pte, offset);
                 err = add_to_pagemap(addr, pfn, pm);
                 if (err)
                         return err;
@@ -799,7 +787,7 @@ static ssize_t pagemap_read(struct file *file, char __user *buf,
                 start_vaddr = end;
 
                 len = min(count, PM_ENTRY_BYTES * pm.pos);
-                if (copy_to_user(buf, pm.buffer, len) < 0) {
+                if (copy_to_user(buf, pm.buffer, len)) {
                         ret = -EFAULT;
                         goto out_free;
                 }
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index 5d9fd64ef81a..46d4b5d72bd3 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -5,6 +5,7 @@
 #include <linux/fs_struct.h>
 #include <linux/mount.h>
 #include <linux/ptrace.h>
+#include <linux/slab.h>
 #include <linux/seq_file.h>
 #include "internal.h"
 
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 0872afa58d39..9fbc99ec799a 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -12,6 +12,7 @@
 #include <linux/user.h>
 #include <linux/elf.h>
 #include <linux/elfcore.h>
+#include <linux/slab.h>
 #include <linux/highmem.h>
 #include <linux/bootmem.h>
 #include <linux/init.h>