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>

11 files changed, 11 insertions, 0 deletions

diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index b3088886cd37..a5c46db2855c 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -44,6 +44,7 @@
 #include <linux/proc_fs.h>
 #include <linux/rcupdate.h>
 #include <linux/sched.h>
+#include <linux/sched/mm.h>
 #include <linux/seq_file.h>
 #include <linux/security.h>
 #include <linux/slab.h>
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 */
diff --git a/kernel/exit.c b/kernel/exit.c
index 9c0b92833fbb..48649ccbb649 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -7,6 +7,7 @@
 #include <linux/mm.h>
 #include <linux/slab.h>
 #include <linux/sched/autogroup.h>
+#include <linux/sched/mm.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/capability.h>
diff --git a/kernel/fork.c b/kernel/fork.c
index 234f4bfb8efd..1875468e2a81 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -13,6 +13,7 @@
 
 #include <linux/slab.h>
 #include <linux/sched/autogroup.h>
+#include <linux/sched/mm.h>
 #include <linux/init.h>
 #include <linux/unistd.h>
 #include <linux/module.h>
diff --git a/kernel/futex.c b/kernel/futex.c
index 8ddcf9ea953c..229a744b1781 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -62,6 +62,7 @@
 #include <linux/ptrace.h>
 #include <linux/sched/rt.h>
 #include <linux/sched/wake_q.h>
+#include <linux/sched/mm.h>
 #include <linux/hugetlb.h>
 #include <linux/freezer.h>
 #include <linux/bootmem.h>
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 49ba7c1ade9d..6fe5a2897912 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -10,6 +10,7 @@
 #include <linux/capability.h>
 #include <linux/export.h>
 #include <linux/sched.h>
+#include <linux/sched/mm.h>
 #include <linux/errno.h>
 #include <linux/mm.h>
 #include <linux/highmem.h>
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 4d386461f13a..e2307a6c29f1 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -5,6 +5,7 @@
 #include <linux/sched/rt.h>
 #include <linux/sched/clock.h>
 #include <linux/sched/wake_q.h>
+#include <linux/sched/mm.h>
 #include <linux/u64_stats_sync.h>
 #include <linux/sched/deadline.h>
 #include <linux/kernel_stat.h>
diff --git a/kernel/sys.c b/kernel/sys.c
index cfe82ae62423..dc71ec1e1967 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -51,6 +51,7 @@
 #include <linux/sched.h>
 #include <linux/sched/autogroup.h>
 #include <linux/sched/loadavg.h>
+#include <linux/sched/mm.h>
 #include <linux/rcupdate.h>
 #include <linux/uidgid.h>
 #include <linux/cred.h>
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index 107afca97649..02a4aeb22c47 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -9,6 +9,7 @@
 #include <linux/mutex.h>
 #include <linux/ftrace.h>
 #include <linux/sched/clock.h>
+#include <linux/sched/mm.h>
 
 #include "trace_output.h"
 
diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 5c21f0535056..571a2d3821d8 100644
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -18,6 +18,7 @@
 
 #include <linux/kernel.h>
 #include <linux/sched.h>
+#include <linux/sched/mm.h>
 #include <linux/tsacct_kern.h>
 #include <linux/acct.h>
 #include <linux/jiffies.h>