If the block device hard sector size is larger than EXT4_MIN_BLOCK_SIZE we
end up with wrong block number when reading super block.
Signed-off-by: Aneesh Kumar K.V <[email protected]>
---
fs/ext4/super.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 1ca0f54..832e1ad 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1629,8 +1629,8 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
* block sizes. We need to calculate the offset from buffer start.
*/
if (blocksize != EXT4_MIN_BLOCK_SIZE) {
- logical_sb_block = sb_block * EXT4_MIN_BLOCK_SIZE;
- offset = do_div(logical_sb_block, blocksize);
+ logical_sb_block = (sb_block * EXT4_MIN_BLOCK_SIZE) / blocksize;
+ offset = do_div((sb_block * EXT4_MIN_BLOCK_SIZE), blocksize);
} else {
logical_sb_block = sb_block;
}
--
1.5.4.rc2-dirty