mmu_context_mm.h is using struct task_struct, which is defined in
linux/sched.h. Source files that include mm_context_mm.h
(directly or indirectly) and doesn't include linux/sched.h will generate
an error. An example of that is drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c

This patch adds an include of linux/sched.h to mmu_context_mm.h to avoid
such errors.
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

Update code that relied on sched.h including various MM types for them.

This will allow us to remove the <linux/mm_types.h> include from <linux/sched.h>.
Acked-by: NLinus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: NIngo Molnar <mingo@kernel.org>

This allows us to move duplicated code in <asm/atomic.h>
(atomic_inc_not_zero() for now) to <linux/atomic.h>
Signed-off-by: NArun Sharma <asharma@fb.com>
Reviewed-by: NEric Dumazet <eric.dumazet@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Miller <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NMichal Simek <monstr@monstr.eu>