>From eba78f3cf10205b6bf6dc608e623a12e004348ba Mon Sep 17 00:00:00 2001
From: Li Hong <lihong.hi@xxxxxxxxx>
Date: Sun, 18 Oct 2009 15:01:49 +0800
Subject: [PATCH] btrfs: ctree.h Clean up some comments
Signed-off-by: Li Hong <lihong.hi@xxxxxxxxx>
---
fs/btrfs/ctree.h | 14 +++++++-------
1 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index e5dd628..752f4fc 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -288,13 +288,13 @@ static inline unsigned long btrfs_chunk_item_size(int num_stripes)
* every tree block (leaf or node) starts with this header.
*/
struct btrfs_header {
- /* these first four must match the super block */
+ /* these first 4 fields must match struct btrfs_super_block */
u8 csum[BTRFS_CSUM_SIZE];
- u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */
- __le64 bytenr; /* which block this node is supposed to live in */
+ u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */
+ __le64 bytenr; /* byte offset this block is supposed to live in */
__le64 flags;
- /* allowed to be different from the super from here on down */
+ /* different from the btrfs_super_block from here on down */
u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
__le64 generation;
__le64 owner;
@@ -324,13 +324,13 @@ struct btrfs_header {
* it currently lacks any block count etc etc
*/
struct btrfs_super_block {
+ /* these first 4 fields must match struct btrfs_header */
u8 csum[BTRFS_CSUM_SIZE];
- /* the first 4 fields must match struct btrfs_header */
u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */
- __le64 bytenr; /* this block number */
+ __le64 bytenr; /* byte offset this block is supposed to live in */
__le64 flags;
- /* allowed to be different from the btrfs_header from here own down */
+ /* different from the btrfs_header from here on down */
__le64 magic;
__le64 generation;
__le64 root;
--
1.6.0.4
--
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