Btrfs: fix race between mmap writes and compression

[pandora-kernel.git] / fs / btrfs / extent_io.h

diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index dc81868..258c921 100644 (file)
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -158,8 +158,7 @@ struct extent_buffer {
         */
        wait_queue_head_t read_lock_wq;
        wait_queue_head_t lock_wq;
-       struct page *inline_pages[INLINE_EXTENT_BUFFER_PAGES];
-       struct page **pages;
+       struct page *pages[INLINE_EXTENT_BUFFER_PAGES];
 };
 
 static inline void extent_set_compress_type(unsigned long *bio_flags,
@@ -326,6 +325,8 @@ int map_private_extent_buffer(struct extent_buffer *eb, unsigned long offset,
                      unsigned long *map_len);
 int extent_range_uptodate(struct extent_io_tree *tree,
                          u64 start, u64 end);
+int extent_range_clear_dirty_for_io(struct inode *inode, u64 start, u64 end);
+int extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end);
 int extent_clear_unlock_delalloc(struct inode *inode,
                                struct extent_io_tree *tree,
                                u64 start, u64 end, struct page *locked_page,