sched/headers: Prepare for new header dependencies before moving code to <linux/sched/mm.h>

We are going to split <linux/sched/mm.h> out of <linux/sched.h>, which
will have to be picked up from other headers and a couple of .c files.

Create a trivial placeholder <linux/sched/mm.h> file that just
maps to <linux/sched.h> to make this patch obviously correct and
bisectable.

The APIs that are going to be moved first are:

   mm_alloc()
   __mmdrop()
   mmdrop()
   mmdrop_async_fn()
   mmdrop_async()
   mmget_not_zero()
   mmput()
   mmput_async()
   get_task_mm()
   mm_access()
   mm_release()

Include the new header in the files that are going to need it.

Acked-by: Linus 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: Ingo Molnar <mingo@kernel.org>

2 files changed, 2 insertions, 0 deletions

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 42fe16a84f97..6f41548f2e32 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -47,6 +47,7 @@
 #include <linux/namei.h>
 #include <linux/parser.h>
 #include <linux/sched/clock.h>
+#include <linux/sched/mm.h>
 
 #include "internal.h"
 
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index d630f8ac4d2f..62f2dbd13efc 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -27,6 +27,7 @@
 #include <linux/pagemap.h>      /* read_mapping_page */
 #include <linux/slab.h>
 #include <linux/sched.h>
+#include <linux/sched/mm.h>
 #include <linux/export.h>
 #include <linux/rmap.h>         /* anon_vma_prepare */
 #include <linux/mmu_notifier.h> /* set_pte_at_notify */