3 files changed, 13 insertions, 7 deletions

diff --git a/mm/memory.c b/mm/memory.c
index 6793b9c68107..a472bcd4b061 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2765,16 +2765,26 @@ int make_pages_present(unsigned long addr, unsigned long end)
 
         vma = find_vma(current->mm, addr);
         if (!vma)
-                return -1;
+                return -ENOMEM;
         write = (vma->vm_flags & VM_WRITE) != 0;
         BUG_ON(addr >= end);
         BUG_ON(end > vma->vm_end);
         len = DIV_ROUND_UP(end, PAGE_SIZE) - addr/PAGE_SIZE;
         ret = get_user_pages(current, current->mm, addr,
                         len, write, 0, NULL, NULL);
-        if (ret < 0)
+        if (ret < 0) {
+                /*
+                   SUS require strange return value to mlock
+                    - invalid addr generate to ENOMEM.
+                    - out of memory should generate EAGAIN.
+                */
+                if (ret == -EFAULT)
+                        ret = -ENOMEM;
+                else if (ret == -ENOMEM)
+                        ret = -EAGAIN;
                 return ret;
-        return ret == len ? 0 : -1;
+        }
+        return ret == len ? 0 : -ENOMEM;
 }
 
 #if !defined(__HAVE_ARCH_GATE_AREA)
diff --git a/mm/mlock.c b/mm/mlock.c
index 7b2656055d6a..01fbe93eff5c 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -78,8 +78,6 @@ success:
 
         mm->locked_vm -= pages;
 out:
-        if (ret == -ENOMEM)
-                ret = -EAGAIN;
         return ret;
 }
 
diff --git a/mm/truncate.c b/mm/truncate.c
index e68443d74567..894e9a70699f 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -104,7 +104,6 @@ truncate_complete_page(struct address_space *mapping, struct page *page)
         cancel_dirty_page(page, PAGE_CACHE_SIZE);
 
         remove_from_page_cache(page);
-        ClearPageUptodate(page);
         ClearPageMappedToDisk(page);
         page_cache_release(page);       /* pagecache ref */
 }
@@ -356,7 +355,6 @@ invalidate_complete_page2(struct address_space *mapping, struct page *page)
         BUG_ON(PagePrivate(page));
         __remove_from_page_cache(page);
         spin_unlock_irq(&mapping->tree_lock);
-        ClearPageUptodate(page);
         page_cache_release(page);       /* pagecache ref */
         return 1;
 failed: