Hi All:
I find a problem when I use project quota, my base environment is
radhat7.2 (kernel-3.10.y + e2fsprogs-1.42.9).
It will be reproduced with the following steps:
1. mkfs.ext4 /dev/vdb1
2. mount /dev/vdb1 /mnt
3. touch /mnt/testfile
4. umount /mnt
5. Update kernel and e2fsprogs to *upstream stable version*
6. tune2fs -O quota,project /dev/vdb1
7. mount /dev/vdb1 /mnt
8. chattr -p 123 /mnt/testfile
Execute fail and output:
/bin/chattr: Value too large for defined data type while setting project on /mnt/aa
The immediate reason is the following check, i_extra_isize is not updated.
static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
{
...
raw_inode = ext4_raw_inode(&iloc);
if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) {
err = -EOVERFLOW;
brelse(iloc.bh);
goto out_unlock;
}
...
}
So if I write something to testfile before "step 8" ,the chattr will execute
successfully, because it trigger ext4_expand_extra_isize() to update
i_extra_isize. So is this a BUG or I miss something?
