md: linear: Make array_size sector-based and rename it to array_sectors.

[pandora-kernel.git] / mm / truncate.c

diff --git a/mm/truncate.c b/mm/truncate.c
index cadc156..b8961cb 100644 (file)
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -21,7 +21,7 @@
 
 
 /**
- * do_invalidatepage - invalidate part of all of a page
+ * do_invalidatepage - invalidate part or all of a page
  * @page: the page which is affected
  * @offset: the index of the truncation point
  *
@@ -48,7 +48,7 @@ void do_invalidatepage(struct page *page, unsigned long offset)
 
 static inline void truncate_partial_page(struct page *page, unsigned partial)
 {
-       zero_user_page(page, partial, PAGE_CACHE_SIZE - partial, KM_USER0);
+       zero_user_segment(page, partial, PAGE_CACHE_SIZE);
        if (PagePrivate(page))
                do_invalidatepage(page, partial);
 }
@@ -84,7 +84,7 @@ EXPORT_SYMBOL(cancel_dirty_page);
 
 /*
  * If truncate cannot remove the fs-private metadata from the page, the page
- * becomes anonymous.  It will be left on the LRU and may even be mapped into
+ * becomes orphaned.  It will be left on the LRU and may even be mapped into
  * user pagetables if we're racing with filemap_fault().
  *
  * We need to bale out if page->mapping is no longer equal to the original
@@ -98,11 +98,11 @@ truncate_complete_page(struct address_space *mapping, struct page *page)
        if (page->mapping != mapping)
                return;
 
-       cancel_dirty_page(page, PAGE_CACHE_SIZE);
-
        if (PagePrivate(page))
                do_invalidatepage(page, 0);
 
+       cancel_dirty_page(page, PAGE_CACHE_SIZE);
+
        remove_from_page_cache(page);
        ClearPageUptodate(page);
        ClearPageMappedToDisk(page);
@@ -134,8 +134,7 @@ invalidate_complete_page(struct address_space *mapping, struct page *page)
 }
 
 /**
- * truncate_inode_pages - truncate range of pages specified by start and
- * end byte offsets
+ * truncate_inode_pages - truncate range of pages specified by start & end byte offsets
  * @mapping: mapping to truncate
  * @lstart: offset from which to truncate
  * @lend: offset to which to truncate
@@ -392,6 +391,7 @@ int invalidate_inode_pages2_range(struct address_space *mapping,
        pgoff_t next;
        int i;
        int ret = 0;
+       int ret2 = 0;
        int did_range_unmap = 0;
        int wrapped = 0;
 
@@ -439,9 +439,13 @@ int invalidate_inode_pages2_range(struct address_space *mapping,
                                }
                        }
                        BUG_ON(page_mapped(page));
-                       ret = do_launder_page(mapping, page);
-                       if (ret == 0 && !invalidate_complete_page2(mapping, page))
-                               ret = -EIO;
+                       ret2 = do_launder_page(mapping, page);
+                       if (ret2 == 0) {
+                               if (!invalidate_complete_page2(mapping, page))
+                                       ret2 = -EIO;
+                       }
+                       if (ret2 < 0)
+                               ret = ret2;
                        unlock_page(page);
                }
                pagevec_release(&pvec);