6 files changed, 36 insertions, 34 deletions

diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 0c80d3f57a5b..eedc334fb6f5 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -43,9 +43,9 @@ int hugetlb_mempolicy_sysctl_handler(struct ctl_table *, int,
 #endif
 
 int copy_hugetlb_page_range(struct mm_struct *, struct mm_struct *, struct vm_area_struct *);
-int follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *,
-                        struct page **, struct vm_area_struct **,
-                        unsigned long *, int *, int, unsigned int flags);
+long follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *,
+                         struct page **, struct vm_area_struct **,
+                         unsigned long *, unsigned long *, long, unsigned int);
 void unmap_hugepage_range(struct vm_area_struct *,
                           unsigned long, unsigned long, struct page *);
 void __unmap_hugepage_range_final(struct mmu_gather *tlb,
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 97da0302cf51..87b0ef253607 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1013,13 +1013,14 @@ extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void *
 extern int access_remote_vm(struct mm_struct *mm, unsigned long addr,
                 void *buf, int len, int write);
 
-int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
-                     unsigned long start, int len, unsigned int foll_flags,
-                     struct page **pages, struct vm_area_struct **vmas,
-                     int *nonblocking);
-int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
-                        unsigned long start, int nr_pages, int write, int force,
-                        struct page **pages, struct vm_area_struct **vmas);
+long __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
+                      unsigned long start, unsigned long nr_pages,
+                      unsigned int foll_flags, struct page **pages,
+                      struct vm_area_struct **vmas, int *nonblocking);
+long get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
+                    unsigned long start, unsigned long nr_pages,
+                    int write, int force, struct page **pages,
+                    struct vm_area_struct **vmas);
 int get_user_pages_fast(unsigned long start, int nr_pages, int write,
                         struct page **pages);
 struct kvec;
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index e14a8c79a1eb..cdb64e4d238a 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2920,14 +2920,14 @@ follow_huge_pud(struct mm_struct *mm, unsigned long address,
         return NULL;
 }
 
-int follow_hugetlb_page(struct mm_struct *mm, struct vm_area_struct *vma,
-                        struct page **pages, struct vm_area_struct **vmas,
-                        unsigned long *position, int *length, int i,
-                        unsigned int flags)
+long follow_hugetlb_page(struct mm_struct *mm, struct vm_area_struct *vma,
+                         struct page **pages, struct vm_area_struct **vmas,
+                         unsigned long *position, unsigned long *nr_pages,
+                         long i, unsigned int flags)
 {
         unsigned long pfn_offset;
         unsigned long vaddr = *position;
-        int remainder = *length;
+        unsigned long remainder = *nr_pages;
         struct hstate *h = hstate_vma(vma);
 
         spin_lock(&mm->page_table_lock);
@@ -2997,7 +2997,7 @@ same_page:
                 }
         }
         spin_unlock(&mm->page_table_lock);
-        *length = remainder;
+        *nr_pages = remainder;
         *position = vaddr;
 
         return i ? i : -EFAULT;
diff --git a/mm/memory.c b/mm/memory.c
index 7bd22a621817..bc929dbad215 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1677,15 +1677,15 @@ static inline int stack_guard_page(struct vm_area_struct *vma, unsigned long add
  * instead of __get_user_pages. __get_user_pages should be used only if
  * you need some special @gup_flags.
  */
-int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
-                     unsigned long start, int nr_pages, unsigned int gup_flags,
-                     struct page **pages, struct vm_area_struct **vmas,
-                     int *nonblocking)
+long __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
+                unsigned long start, unsigned long nr_pages,
+                unsigned int gup_flags, struct page **pages,
+                struct vm_area_struct **vmas, int *nonblocking)
 {
-        int i;
+        long i;
         unsigned long vm_flags;
 
-        if (nr_pages <= 0)
+        if (!nr_pages)
                 return 0;
 
         VM_BUG_ON(!!pages != !!(gup_flags & FOLL_GET));
@@ -1981,9 +1981,9 @@ int fixup_user_fault(struct task_struct *tsk, struct mm_struct *mm,
  *
  * See also get_user_pages_fast, for performance critical applications.
  */
-int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
-                unsigned long start, int nr_pages, int write, int force,
-                struct page **pages, struct vm_area_struct **vmas)
+long get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
+                unsigned long start, unsigned long nr_pages, int write,
+                int force, struct page **pages, struct vm_area_struct **vmas)
 {
         int flags = FOLL_TOUCH;
 
diff --git a/mm/mlock.c b/mm/mlock.c
index 38db3b094105..e6638f565d42 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -160,7 +160,7 @@ long __mlock_vma_pages_range(struct vm_area_struct *vma,
 {
         struct mm_struct *mm = vma->vm_mm;
         unsigned long addr = start;
-        int nr_pages = (end - start) / PAGE_SIZE;
+        unsigned long nr_pages = (end - start) / PAGE_SIZE;
         int gup_flags;
 
         VM_BUG_ON(start & ~PAGE_MASK);
@@ -382,7 +382,7 @@ int __mm_populate(unsigned long start, unsigned long len, int ignore_errors)
         unsigned long end, nstart, nend;
         struct vm_area_struct *vma = NULL;
         int locked = 0;
-        int ret = 0;
+        long ret = 0;
 
         VM_BUG_ON(start & ~PAGE_MASK);
         VM_BUG_ON(len != PAGE_ALIGN(len));
diff --git a/mm/nommu.c b/mm/nommu.c
index 87854a55829d..6ab706608492 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -140,10 +140,10 @@ unsigned int kobjsize(const void *objp)
         return PAGE_SIZE << compound_order(page);
 }
 
-int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
-                     unsigned long start, int nr_pages, unsigned int foll_flags,
-                     struct page **pages, struct vm_area_struct **vmas,
-                     int *retry)
+long __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
+                      unsigned long start, unsigned long nr_pages,
+                      unsigned int foll_flags, struct page **pages,
+                      struct vm_area_struct **vmas, int *nonblocking)
 {
         struct vm_area_struct *vma;
         unsigned long vm_flags;
@@ -190,9 +190,10 @@ finish_or_fault:
  *   slab page or a secondary page from a compound page
  * - don't permit access to VMAs that don't support it, such as I/O mappings
  */
-int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
-        unsigned long start, int nr_pages, int write, int force,
-        struct page **pages, struct vm_area_struct **vmas)
+long get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
+                    unsigned long start, unsigned long nr_pages,
+                    int write, int force, struct page **pages,
+                    struct vm_area_struct **vmas)
 {
         int flags = 0;