Re: [PATCH v2 15/36] fs: add ksys_umount() helper; remove in-kernel call to sys_umount()

[Christoph Hellwig]

On Thu, Mar 15, 2018 at 08:05:08PM +0100, Dominik Brodowski wrote:
> Using this helper allows us to avoid the in-kernel call to the sys_umount()
> syscall.

kern_unmount, please.  And make it operate on kernel pointers please.