linux-ext4 - [RFC PATCH 1/5] ext4: add two structures delayed extent list nees

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Message-Id: <1314694821-17213-2-git-send-email-xiaoqiangnk@gmail.com>
Date:	Tue, 30 Aug 2011 17:00:17 +0800
From:	Yongqiang Yang <xiaoqiangnk@...il.com>
To:	linux-ext4@...r.kernel.org
Cc:	achender@...ux.vnet.ibm.com, adityakali@...gle.com, tytso@....edu,
	Yongqiang Yang <xiaoqiangnk@...il.com>
Subject: [RFC PATCH 1/5] ext4: add two structures delayed extent list nees

This patch adds two structures that delayed extent list needs.

Signed-off-by: Yongqiang Yang <xiaoqiangnk@...il.com>
---
 fs/ext4/delayed_extents.h |   22 ++++++++++++++++++++++
 1 files changed, 22 insertions(+), 0 deletions(-)
 create mode 100644 fs/ext4/delayed_extents.h

diff --git a/fs/ext4/delayed_extents.h b/fs/ext4/delayed_extents.h
new file mode 100644
index 0000000..b7baaef
--- /dev/null
+++ b/fs/ext4/delayed_extents.h
@@ -0,0 +1,22 @@
+/*
+ *  fs/ext4/delayed_extents.h
+ *
+ * Written by Yongqiang Yang <xiaoqiangnk@...il.com>
+ *
+ */
+
+#ifndef _EXT4_DELAYED_EXTENTS_H
+#define _EXT4_DELAYED_EXTENTS_H
+
+struct ext4_delayed_extent {
+	struct list_head de_list;
+	ext4_lblk_t de_start;	/* first block extent covers */
+	ext4_lblk_t de_end;	/* block at which extent ends */
+};
+
+struct ext4_delayed_info {
+	struct list_head de_list;
+	struct ext4_delayed_extent *cache_de;	/* recently accessed extent */
+};
+
+#endif /* _EXT4_DELAYED_EXTENTS_H */
-- 
1.7.5.1

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