[PATCH] locking/rwsem: Convert the other sem->count to 'atomic_long_t'

[Tetsuo Handa]

Since "locking/rwsem: Convert sem->count to 'atomic_long_t'" forgot to
convert "struct rw_semaphore"->count in linux/rwsem-spinlock.h which is
used when CONFIG_RWSEM_GENERIC_SPINLOCK=y, trying to access it in MIPS
architecture causes build error due to type mismatch.

  error: passing argument 1 of 'atomic_long_read' from incompatible pointer type [-Werror=incompatible-pointer-types]
  note: expected 'const atomic_long_t * {aka const struct <anonymous> *}' but argument is of type '__s32 * {aka int *}'

Signed-off-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Reported-by: kbuild test robot <lkp@xxxxxxxxx>
Fixes: 8ee62b1870be8e63 ("locking/rwsem: Convert sem->count to 'atomic_long_t'")
Cc: stable <stable@xxxxxxxxxxxxxxx> # v4.8+
Cc: Jason Low <jason.low2@xxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
---
 include/linux/rwsem-spinlock.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/rwsem-spinlock.h b/include/linux/rwsem-spinlock.h
index e475683..1164965 100644
--- a/include/linux/rwsem-spinlock.h
+++ b/include/linux/rwsem-spinlock.h
@@ -22,7 +22,7 @@
  * - if wait_list is not empty, then there are processes waiting for the semaphore
  */
 struct rw_semaphore {
-	__s32			count;
+	atomic_long_t		count;
 	raw_spinlock_t		wait_lock;
 	struct list_head	wait_list;
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
-- 
2.7.4