nilfs2: super root size should change depending on inode size
The size of super root structure depends on inode size, so
NILFS_SR_BYTES macro should be a function of the inode size. This
fixes the issue.
Even though a different size value will be written for a possible
future filesystem with extended inode, but fortunately this does not
break disk format compatibility.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c
index 410ec2b..850a7c0 100644
--- a/fs/nilfs2/segbuf.c
+++ b/fs/nilfs2/segbuf.c
@@ -239,12 +239,15 @@
u32 seed)
{
struct nilfs_super_root *raw_sr;
+ struct the_nilfs *nilfs = segbuf->sb_super->s_fs_info;
+ unsigned srsize;
u32 crc;
raw_sr = (struct nilfs_super_root *)segbuf->sb_super_root->b_data;
+ srsize = NILFS_SR_BYTES(nilfs->ns_inode_size);
crc = crc32_le(seed,
(unsigned char *)raw_sr + sizeof(raw_sr->sr_sum),
- NILFS_SR_BYTES - sizeof(raw_sr->sr_sum));
+ srsize - sizeof(raw_sr->sr_sum));
raw_sr->sr_sum = cpu_to_le32(crc);
}