linux-kernel - [PATCH 02/19] f2fs: add missing version info in superblock

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Message-Id: <1430527726-68547-2-git-send-email-jaegeuk@kernel.org>
Date:	Fri,  1 May 2015 17:48:29 -0700
From:	Jaegeuk Kim <jaegeuk@...nel.org>
To:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net
Cc:	Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH 02/19] f2fs: add missing version info in superblock

The mkfs.f2fs remains kernel version in superblock, but f2fs module has not
added that so far.

Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
 include/linux/f2fs_fs.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index 591f8c3..8d345c2 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -50,6 +50,8 @@
 #define MAX_ACTIVE_NODE_LOGS	8
 #define MAX_ACTIVE_DATA_LOGS	8
 
+#define VERSION_LEN	256
+
 /*
  * For superblock
  */
@@ -86,6 +88,9 @@ struct f2fs_super_block {
 	__le32 extension_count;		/* # of extensions below */
 	__u8 extension_list[F2FS_MAX_EXTENSION][8];	/* extension array */
 	__le32 cp_payload;
+	__u8 version[VERSION_LEN];	/* the kernel version */
+	__u8 init_version[VERSION_LEN];	/* the initial kernel version */
+	__u8 reserved[892];		/* valid reserved region */
 } __packed;
 
 /*
-- 
2.1.1

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