Btrfs: remove #if 0 code

[linux-beck.git] / fs / btrfs / extent_io.c

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index c33b54029d785303d598995da3255f8e031a1c3d..fe9eb990e443680ac1920ae1c6aea6327f2ec91e 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -1401,69 +1401,6 @@ out:
        return total_bytes;
 }
 
-#if 0
-/*
- * helper function to lock both pages and extents in the tree.
- * pages must be locked first.
- */
-static int lock_range(struct extent_io_tree *tree, u64 start, u64 end)
-{
-       unsigned long index = start >> PAGE_CACHE_SHIFT;
-       unsigned long end_index = end >> PAGE_CACHE_SHIFT;
-       struct page *page;
-       int err;
-
-       while (index <= end_index) {
-               page = grab_cache_page(tree->mapping, index);
-               if (!page) {
-                       err = -ENOMEM;
-                       goto failed;
-               }
-               if (IS_ERR(page)) {
-                       err = PTR_ERR(page);
-                       goto failed;
-               }
-               index++;
-       }
-       lock_extent(tree, start, end, GFP_NOFS);
-       return 0;
-
-failed:
-       /*
-        * we failed above in getting the page at 'index', so we undo here
-        * up to but not including the page at 'index'
-        */
-       end_index = index;
-       index = start >> PAGE_CACHE_SHIFT;
-       while (index < end_index) {
-               page = find_get_page(tree->mapping, index);
-               unlock_page(page);
-               page_cache_release(page);
-               index++;
-       }
-       return err;
-}
-
-/*
- * helper function to unlock both pages and extents in the tree.
- */
-static int unlock_range(struct extent_io_tree *tree, u64 start, u64 end)
-{
-       unsigned long index = start >> PAGE_CACHE_SHIFT;
-       unsigned long end_index = end >> PAGE_CACHE_SHIFT;
-       struct page *page;
-
-       while (index <= end_index) {
-               page = find_get_page(tree->mapping, index);
-               unlock_page(page);
-               page_cache_release(page);
-               index++;
-       }
-       unlock_extent(tree, start, end, GFP_NOFS);
-       return 0;
-}
-#endif
-
 /*
  * set the private field for a given byte offset in the tree.  If there isn't
  * an extent_state there already, this does nothing.