The following patch fixes a bug in the processing of the sb=
(alternate superblock) mount option for ext2: when changing the device
block size, the given superblock is ignored and the code reverts to using
block 1. This patch is against kernel 2.6.5.
--Andrew Church
[email protected]
http://achurch.org/
---------------------------------------------------------------------------
--- fs/ext2/super.c.old Thu Mar 11 11:55:35 2004
+++ fs/ext2/super.c Mon Apr 5 09:15:54 2004
@@ -564,8 +564,8 @@
struct ext2_sb_info * sbi;
struct ext2_super_block * es;
struct inode *root;
- unsigned long block, sb_block = 1;
- unsigned long logic_sb_block = get_sb_block(&data);
+ unsigned long block, sb_block = get_sb_block(&data);
+ unsigned long logic_sb_block;
unsigned long offset = 0;
unsigned long def_mount_opts;
int blocksize = BLOCK_SIZE;
@@ -598,6 +598,8 @@
if (blocksize != BLOCK_SIZE) {
logic_sb_block = (sb_block*BLOCK_SIZE) / blocksize;
offset = (sb_block*BLOCK_SIZE) % blocksize;
+ } else {
+ logic_sb_block = sb_block;
}
if (!(bh = sb_bread(sb, logic_sb_block))) {