block: Replace __this_cpu_ptr with raw_cpu_ptr

__this_cpu_ptr is being phased out.

Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

fs/buffer.c

diff --git a/fs/buffer.c b/fs/buffer.c
index 1c04ec6..651dba1 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -1312,7 +1312,7 @@
 		}
 		while (out < BH_LRU_SIZE)
 			bhs[out++] = NULL;
-		memcpy(__this_cpu_ptr(&bh_lrus.bhs), bhs, sizeof(bhs));
+		memcpy(this_cpu_ptr(&bh_lrus.bhs), bhs, sizeof(bhs));
 	}
 	bh_lru_unlock();