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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2011-04-30 18:56:12 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2011-05-10 22:21:45 +0900
commit56eb55388580ebd51f3bbd9af40ebb56849356af (patch)
tree7d1ed80fa05150c40a75d5755981c8d949ae634b /fs/nilfs2/inode.c
parent6c6de1aa65189c37cc3c9af78da756c06a99899b (diff)
downloadlinux-56eb55388580ebd51f3bbd9af40ebb56849356af.tar.gz
nilfs2: zero fill unused portion of super root block
The super root block is newly-allocated each time it is written back to disk, so unused portion of the block should be cleared. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/inode.c')
-rw-r--r--fs/nilfs2/inode.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 2cc8c087b2d..699170e0f30 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -596,6 +596,16 @@ void nilfs_write_inode_common(struct inode *inode,
raw_inode->i_flags = cpu_to_le32(ii->i_flags);
raw_inode->i_generation = cpu_to_le32(inode->i_generation);
+ if (NILFS_ROOT_METADATA_FILE(inode->i_ino)) {
+ struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+
+ /* zero-fill unused portion in the case of super root block */
+ raw_inode->i_xattr = 0;
+ raw_inode->i_pad = 0;
+ memset((void *)raw_inode + sizeof(*raw_inode), 0,
+ nilfs->ns_inode_size - sizeof(*raw_inode));
+ }
+
if (has_bmap)
nilfs_bmap_write(ii->i_bmap, raw_inode);
else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))