On Wed, Jul 15, 2020 at 07:25:13PM +0900, Daeho Jeong wrote:
> Chao,
>
> I can't find fscrypt_zeroout_range_inline_crypt() function. Do you
> mean we need to implement this one for inline encryption?
>
> 2020년 7월 15일 (수) 오후 4:17, Chao Yu <yuch...@huawei.com>님이 작성:
> >
> > On 2020/7/15 14:54, Daeho Jeong wrote:
> > > You mean we can support ZEROOUT option only for encrypted files of
> > > non-multidevice f2fs,
> > > and return -EOPNOTSUPP in the multidevice case, right now?
> >
> > Yes, something like:
> >
> > f2fs_sec_trim_file()
> >
> > if ((range.flags & F2FS_TRIM_FILE_ZEROOUT) &&
> > f2fs_encrypted_file() && f2fs_is_multi_device())
> > return -EOPNOTSUPP;
> >
> >
> > f2fs_secure_erase()
> >
> > if (!ret && (flags & F2FS_TRIM_FILE_ZEROOUT)) {
> > if (f2fs_encrypted_file()) {
> > if (fscrypt_inode_uses_fs_layer_crypto)
> > ret = fscrypt_zeroout_range();
> > else
> > ret = fscrypt_zeroout_range_inline_crypt();
> > } else {
> > ret = blkdev_issue_zeroout();
> > }
> > }
fscrypt_zeroout_range_inline_crypt() is being added by
"fscrypt: add inline encryption support", which is queued in the fscrypt tree
(the master branch of https://git.kernel.org/pub/scm/fs/fscrypt/fscrypt.git).
But that's not actually relevant here because fscrypt_zeroout_range() calls
fscrypt_zeroout_range_inline_crypt() when needed.
Just use fscrypt_zeroout_range().
- Eric
