mm: use long type for page counts in mm_populate() and get_user_pages()

[platform/adaptation/renesas_rcar/renesas_kernel.git] / mm / fremap.c

diff --git a/mm/fremap.c b/mm/fremap.c
index 503a723..0cd4c11 100644 (file)
--- a/mm/fremap.c
+++ b/mm/fremap.c
@@ -204,8 +204,10 @@ get_write_lock:
                        unsigned long addr;
                        struct file *file = get_file(vma->vm_file);
 
-                       addr = mmap_region(file, start, size,
-                                       vma->vm_flags, pgoff);
+                       vm_flags = vma->vm_flags;
+                       if (!(flags & MAP_NONBLOCK))
+                               vm_flags |= VM_POPULATE;
+                       addr = mmap_region(file, start, size, vm_flags, pgoff);
                        fput(file);
                        if (IS_ERR_VALUE(addr)) {
                                err = addr;
@@ -224,6 +226,12 @@ get_write_lock:
                mutex_unlock(&mapping->i_mmap_mutex);
        }
 
+       if (!(flags & MAP_NONBLOCK) && !(vma->vm_flags & VM_POPULATE)) {
+               if (!has_write_lock)
+                       goto get_write_lock;
+               vma->vm_flags |= VM_POPULATE;
+       }
+
        if (vma->vm_flags & VM_LOCKED) {
                /*
                 * drop PG_Mlocked flag for over-mapped range