[RFC v1 01/11] vfs: introduce one structure hot_info

zwu.kernel
2012-09-17T07:22:15Z

One root structure hot_info is defined, is hooked
up in super_block, and will be used to hold rb trees
root, hash list root and some other information, etc.

Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
---
include/linux/fs.h | 4 ++++
include/linux/hot_track.h | 26 ++++++++++++++++++++++++++
2 files changed, 30 insertions(+), 0 deletions(-)
create mode 100644 include/linux/hot_track.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index aa11047..6229895 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -415,6 +415,7 @@ struct inodes_stat_t {
#include <linux/migrate_mode.h>
#include <linux/uidgid.h>
#include <linux/lockdep.h>
+#include <linux/hot_track.h>

#include <asm/byteorder.h>

@@ -1578,6 +1579,9 @@ struct super_block {

/* Being remounted read-only */
int s_readonly_remount;
+
+ /* Hot data tracking info*/
+ struct hot_info s_hotinfo;
};

/* superblock cache pruning functions */
diff --git a/include/linux/hot_track.h b/include/linux/hot_track.h
new file mode 100644
index 0000000..5716b93
--- /dev/null
+++ b/include/linux/hot_track.h
@@ -0,0 +1,26 @@
+/*
+ * include/linux/hot_track.h
+ *
+ * This file has definitions for VFS hot data tracking
+ * structures etc.
+ *
+ * Copyright (C) 2012 IBM Corp. All rights reserved.
+ * Written by Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
+ * Ben Chociej <bchociej@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License v2 as published by the Free Software Foundation.
+ */
+
+#ifndef _LINUX_HOTTRACK_H
+#define _LINUX_HOTTRACK_H
+
+#include <linux/types.h>
+#include <linux/rbtree.h>
+#include <linux/kref.h>
+
+struct hot_info {
+};
+
+#endif /* _LINUX_HOTTRACK_H */
--
1.7.6.5