Re: add file system helpers that take kernel pointers for the init code v4

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On Wed, Jul 29, 2020 at 08:51:17PM +0100, Al Viro wrote:
> On Tue, Jul 28, 2020 at 06:33:53PM +0200, Christoph Hellwig wrote:
> > Hi Al and Linus,
> > 
> > currently a lot of the file system calls in the early in code (and the
> > devtmpfs kthread) rely on the implicit set_fs(KERNEL_DS) during boot.
> > This is one of the few last remaining places we need to deal with to kill
> > off set_fs entirely, so this series adds new helpers that take kernel
> > pointers.  These helpers are in init/ and marked __init and thus will
> > be discarded after bootup.  A few also need to be duplicated in devtmpfs,
> > though unfortunately.
> >
> > The series sits on top of my previous
> > 
> >   "decruft the early init / initrd / initramfs code v2"
> 
> Could you fold the fixes in the parent branch to avoid the bisect hazards?
> As it is, you have e.g. "initd: pass a non-f_pos offset to kernel_read/kernel_write"
> that ought to go into "initrd: switch initrd loading to struct file based APIs"...

I'm not a huge fan of rebasing after it has been out for a long time and
with pending other patches on top of it.  But at your request I've now
folded the fixes and force pushed it.



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