Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

ext4: use proper csum calculation in ext4_rename

Browse source 
In ext4_rename, when the old name is a dir, we need to
change ".." to its new parent and journal the change, so
with metadata_csum enabled, we have to re-calc the csum.

As the first block of the dir can be either a htree root
or a normal directory block and we have different csum
calculation for these 2 types, we have to choose the right
one in ext4_rename.

btw, it is found by xfstests 013.

Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Acked-by: Darrick J. Wong <djwong@us.ibm.com>
This commit is contained in:
Tao Ma 2012-07-09 16:29:05 -04:00 committed by Theodore Ts'o
parent 952fc18ef9
commit ef58f69c3c
1 changed files with 9 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
fs/ext4/namei.c
View file

@ -2918,8 +2918,15 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
PARENT_INO(dir_bh->b_data, new_dir->i_sb->s_blocksize) =
cpu_to_le32(new_dir->i_ino);
BUFFER_TRACE(dir_bh, "call ext4_handle_dirty_metadata");
retval = ext4_handle_dirty_dirent_node(handle, old_inode,
dir_bh);
if (is_dx(old_inode)) {
retval = ext4_handle_dirty_dx_node(handle,
old_inode,
dir_bh);
} else {
retval = ext4_handle_dirty_dirent_node(handle,
old_inode,
dir_bh);
}
if (retval) {
ext4_std_error(old_dir->i_sb, retval);
goto end_rename;