1 Index: linux-2.6.18-128.1.6/fs/ext4/super.c
2 ===================================================================
3 --- linux-2.6.18-128.1.6.orig/fs/ext4/super.c
4 +++ linux-2.6.18-128.1.6/fs/ext4/super.c
5 @@ -70,6 +70,8 @@ struct page *ext4_zero_page;
7 struct proc_dir_entry *proc_root_ext4;
9 +static int bigendian_extents;
11 ext4_fsblk_t ext4_block_bitmap(struct super_block *sb,
12 struct ext4_group_desc *bg)
14 @@ -1222,7 +1224,7 @@ enum {
15 Opt_ignore, Opt_barrier, Opt_err, Opt_resize, Opt_usrquota,
16 Opt_grpquota, Opt_extents, Opt_noextents, Opt_i_version,
17 Opt_inode_readahead_blks, Opt_journal_ioprio,
18 - Opt_iopen, Opt_noiopen, Opt_iopen_nopriv,
19 + Opt_iopen, Opt_noiopen, Opt_iopen_nopriv, Opt_bigendian_extents,
22 static match_table_t tokens = {
23 @@ -1284,6 +1286,7 @@ static match_table_t tokens = {
24 {Opt_auto_da_alloc, "auto_da_alloc=%u"},
25 {Opt_auto_da_alloc, "auto_da_alloc"},
26 {Opt_noauto_da_alloc, "noauto_da_alloc"},
27 + {Opt_bigendian_extents, "bigendian_extents"},
31 @@ -1682,6 +1685,9 @@ clear_qf_name:
33 sbi->s_stripe = option;
35 + case Opt_bigendian_extents:
36 + bigendian_extents = 1;
40 "EXT4-fs: Unrecognized mount option \"%s\" "
41 @@ -2561,6 +2567,15 @@ static int ext4_fill_super(struct super_
46 + if (bigendian_extents == 0) {
47 + printk(KERN_ERR "EXT4-fs: extents feature is not guaranteed to "
48 + "work on big-endian systems. Use \"bigendian_extents\" "
49 + "mount option to override.\n");
54 bgl_lock_init(sbi->s_blockgroup_lock);
56 sbi->s_last_alloc_group = -1;