ocfs2: temporarily remove extent map caching

The code in extent_map.c is not prepared to deal with a subtree being
rotated between lookups. This can happen when filling holes in sparse files.
Instead of a lengthy patch to update the code (which would likely lose the
benefit of caching subtree roots), we remove most of the algorithms and
implement a simple path based lookup. A less ambitious extent caching scheme
will be added in a later patch.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/fs/ocfs2/inode.h b/fs/ocfs2/inode.h
index 042ae20a7132..a9ced009cb9c 100644
--- a/fs/ocfs2/inode.h
+++ b/fs/ocfs2/inode.h
@@ -43,7 +43,6 @@ struct ocfs2_inode_info
         spinlock_t                      ip_lock;
         u32                             ip_open_count;
         u32                             ip_clusters;
-        struct ocfs2_extent_map         ip_map;
         struct list_head                ip_io_markers;
 
         struct mutex                    ip_io_mutex;