[RFC 1/4] mm: remove unused TASK_SIZE_OF()

[David Laight]

From: Dmitry Safonov
> Sent: 30 December 2016 15:57
> All users of TASK_SIZE_OF(tsk) have migrated to mm->task_size or
> TASK_SIZE_MAX since:
> commit d696ca016d57 ("x86/fsgsbase/64: Use TASK_SIZE_MAX for
> FSBASE/GSBASE upper limits"),
> commit a06db751c321 ("pagemap: check permissions and capabilities at
> open time"),
...
> +#define TASK_SIZE	        (current->thread.task_size)

I'm not sure I like he hidden 'current' argument to an
apparent constant.

	David