headers: smp_lock.h redux

* Remove smp_lock.h from files which don't need it (including some headers!)
* Add smp_lock.h to files which do need it
* Make smp_lock.h include conditional in hardirq.h
  It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPT

  This will make hardirq.h inclusion cheaper for every PREEMPT=n config
  (which includes allmodconfig/allyesconfig, BTW)

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 1 deletions

diff --git a/fs/ubifs/ioctl.c b/fs/ubifs/ioctl.c
index 6db7a6be6c97..8aacd64957a2 100644
--- a/fs/ubifs/ioctl.c
+++ b/fs/ubifs/ioctl.c
@@ -25,7 +25,6 @@
 /* This file implements EXT2-compatible extended attribute ioctl() calls */
 
 #include <linux/compat.h>
-#include <linux/smp_lock.h>
 #include <linux/mount.h>
 #include "ubifs.h"