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authorMark Fasheh <mark.fasheh@oracle.com>2007-04-24 05:53:12 +0400
committerMark Fasheh <mark.fasheh@oracle.com>2007-04-27 02:10:40 +0400
commit83418978827324918a8cd25ce5227312de1d4468 (patch)
treef7baefb1fc8721d6d8d1f1f937bc55535b13e18f /fs/ocfs2/inode.h
parent7cdfc3a1c3971c9125c317cb8c2525745851798e (diff)
downloadlinux-83418978827324918a8cd25ce5227312de1d4468.tar.xz
ocfs2: Cache extent records
The extent map code was ripped out earlier because of an inability to deal with holes. This patch adds back a simpler caching scheme requiring far less code. Our old extent map caching was designed back when meta data block caching in Ocfs2 didn't work very well, resulting in many disk reads. These days our metadata caching is much better, resulting in no un-necessary disk reads. As a result, extent caching doesn't have to be as fancy, nor does it have to cache as many extents. Keeping the last 3 extents seen should be sufficient to give us a small performance boost on some streaming workloads. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/ocfs2/inode.h')
-rw-r--r--fs/ocfs2/inode.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/ocfs2/inode.h b/fs/ocfs2/inode.h
index aa84353d0d19..03ae075869ee 100644
--- a/fs/ocfs2/inode.h
+++ b/fs/ocfs2/inode.h
@@ -26,6 +26,8 @@
#ifndef OCFS2_INODE_H
#define OCFS2_INODE_H
+#include "extent_map.h"
+
/* OCFS2 Inode Private Data */
struct ocfs2_inode_info
{
@@ -63,6 +65,8 @@ struct ocfs2_inode_info
struct ocfs2_caching_info ip_metadata_cache;
+ struct ocfs2_extent_map ip_extent_map;
+
struct inode vfs_inode;
};