From 436bd75e47cf804dfe89f805106bb53ff577e99a Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <tytso@mit.edu>
Date: Thu, 31 May 2007 12:43:28 -0400
Subject: [PATCH] Define/reserve new ext4 superblock fields
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---
include/linux/ext4_fs.h | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/include/linux/ext4_fs.h b/include/linux/ext4_fs.h
index 14886847a04c..de1f9f78625a 100644
--- a/include/linux/ext4_fs.h
+++ b/include/linux/ext4_fs.h
@@ -513,7 +513,14 @@ struct ext4_super_block {
/*150*/ __le32 s_blocks_count_hi; /* Blocks count */
__le32 s_r_blocks_count_hi; /* Reserved blocks count */
__le32 s_free_blocks_count_hi; /* Free blocks count */
- __u32 s_reserved[169]; /* Padding to the end of the block */
+ __u16 s_min_extra_isize; /* All inodes have at least # bytes */
+ __u16 s_want_extra_isize; /* New inodes should reserve # bytes */
+ __u32 s_flags; /* Miscellaneous flags */
+ __u16 s_raid_stride; /* RAID stride */
+ __u16 s_mmp_interval; /* # seconds to wait in MMP checking */
+ __u64 s_mmp_block; /* Block for multi-mount protection */
+ __u32 s_raid_stripe_width; /* blocks on all data disks (N*stride)*/
+ __u32 s_reserved[163]; /* Padding to the end of the block */
};
#ifdef __KERNEL__
--
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