Btrfs: Fix PAGE_CACHE_SHIFT shifts on 32 bit machines

[linux-2.6-block.git] / fs / btrfs / file.c

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 843e920388edd2507ea5183888be92edef1e17d5..abdd9caad94ec57f745061ff9116911c25ee835f 100644 (file)
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -301,7 +301,8 @@ static int dirty_and_release_pages(struct btrfs_trans_handle *trans,
                        SetPageUptodate(p);
                        set_page_dirty(p);
                }
-               last_end = pages[num_pages -1]->index << PAGE_CACHE_SHIFT;
+               last_end = (u64)(pages[num_pages -1]->index) <<
+                               PAGE_CACHE_SHIFT;
                last_end += PAGE_CACHE_SIZE - 1;
                set_extent_delalloc(em_tree, start_pos, end_of_last_block,
                                 GFP_NOFS);