1 Index: linux-2.6.5-7.312/fs/ext3/super.c
2 ===================================================================
3 --- linux-2.6.5-7.312.orig/fs/ext3/super.c
4 +++ linux-2.6.5-7.312/fs/ext3/super.c
5 @@ -1298,6 +1298,34 @@ static int ext3_max_dir_size_write(struc
10 + * ext3_get_stripe_size: Get the stripe size.
11 + * @sbi: In memory super block info
13 + * If we have specified it via mount option, then
14 + * use the mount option value. If the value specified at mount time is
15 + * greater than the blocks per group use the super block value.
16 + * If the super block value is greater than blocks per group return 0.
17 + * Allocator needs it be less than blocks per group.
19 +static unsigned long ext3_get_stripe_size(struct ext3_sb_info *sbi)
21 + unsigned long stride = le16_to_cpu(sbi->s_es->s_raid_stride);
22 + unsigned long stripe_width =
23 + le32_to_cpu(sbi->s_es->s_raid_stripe_width);
25 + if (sbi->s_stripe && sbi->s_stripe <= sbi->s_blocks_per_group)
26 + return sbi->s_stripe;
28 + if (stripe_width <= sbi->s_blocks_per_group)
29 + return stripe_width;
31 + if (stride <= sbi->s_blocks_per_group)
37 static int ext3_fill_super (struct super_block *sb, void *data, int silent)
39 struct buffer_head * bh;
40 @@ -1618,6 +1646,8 @@ static int ext3_fill_super (struct super
41 atomic_set(&sbi->s_rsv_window_head.rsv_goal_size, 0);
42 rsv_window_add(sb, &sbi->s_rsv_window_head);
44 + sbi->s_stripe = ext3_get_stripe_size(sbi);
47 * set up enough so that it can read an inode
49 Index: linux-2.6.5-7.312/include/linux/ext3_fs.h
50 ===================================================================
51 --- linux-2.6.5-7.312.orig/include/linux/ext3_fs.h
52 +++ linux-2.6.5-7.312/include/linux/ext3_fs.h
53 @@ -505,8 +505,12 @@ struct ext3_super_block {
54 __u32 s_free_blocks_hi; /* Free blocks count high 32 bits */
55 __u16 s_min_extra_isize; /* All inodes have at least # bytes */
56 __u16 s_want_extra_isize; /* New inodes should reserve # bytes */
57 - __u32 s_flags; /* Miscellaneous flags */
58 - __u32 s_reserved[167]; /* Padding to the end of the block */
59 +/*160*/ __le32 s_flags; /* Miscellaneous flags */
60 + __le16 s_raid_stride; /* RAID stride */
61 + __le16 s_mmp_update_interval; /* # seconds to wait in MMP checking */
62 + __le64 s_mmp_block; /* Block for multi-mount protection */
63 +/*170*/ __le32 s_raid_stripe_width; /* blocks on all data disks (N*stride)*/
64 + __le32 s_reserved[163]; /* Padding to the end of the block */