ocfs2: allocation hints
Record the most recently used allocation group on the allocation context, so
that subsequent allocations can attempt to optimize for contiguousness.
Local alloc especially should benefit from this as the current chain search
tends to let it spew across the disk.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index d52100d..0462a7f 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -236,6 +236,7 @@
enum ocfs2_local_alloc_state local_alloc_state;
struct buffer_head *local_alloc_bh;
+ u64 la_last_gd;
/* Next two fields are for local node slot recovery during
* mount. */