On Wed, Sep 12, 2018 at 6:10 PM David Laight <David.Laight@xxxxxxxxxx> wrote: > > From: Arnd Bergmann > > Sent: 12 September 2018 16:01 > > > > The ceph_ioctl function is used both for files and directories, but only > > the files support doing that in 32-bit compat mode. > > > > For consistency, add the same compat handler to the dir operations > > as well. > > Have you verified that all the relevant ioctl buffer structures are > exactly the same for 32bit and 64bit applications? I checked it now, it's fine: there are only ceph_ioctl_dataloc and ceph_ioctl_layout structures passed here, both of which are compatible. I assumed that the ceph_dir_fops operations were correct here (they are), but you are right that I should have double checked for more bugs as I encountered one of them. Arnd