Yep, it sounds more clear~
2020년 10월 22일 (목) 오후 1:22, Eric Biggers <ebigg...@kernel.org>님이 작성:
>
> On Thu, Oct 22, 2020 at 12:58:47PM +0900, Daeho Jeong wrote:
> > + if (!f2fs_compressed_file(inode)) {
> > + inode_unlock(inode);
> > + return -EINVAL;
> > + }
>
> How about using ENODATA here? EINVAL tends to be used for lots of different
> reasons, and it's not always clear what it means.
>
> Note that FS_IOC_GET_ENCRYPTION_POLICY fails with ENODATA when called on an
> unencrypted file, which is a similar case.
>
> - Eric
