From: achurch@achurch.org (Andrew Church)
To: linux-kernel@vger.kernel.org
Cc: torvalds@transmeta.com
Subject: [PATCH] ext2fs sb= mount option fix (kernel 2.6.5)
Date: Tue, 06 Apr 2004 20:25:52 JST [thread overview]
Message-ID: <407294e2.24215@achurch.org> (raw)
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
achurch@achurch.org
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))) {
reply other threads:[~2004-04-06 11:32 UTC|newest]
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