[patch] drivers/zram: Don't disable preemption in zcomp_stream_get/put()

[Mike Galbraith]

In v4.7, the driver switched to percpu compression streams, disabling
preemption (get/put_cpu_ptr()).  Use get/put_cpu_light() instead.

Signed-off-by: Mike Galbraith <umgwanakikb...@gmail.com>
---
 drivers/block/zram/zcomp.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/block/zram/zcomp.c
+++ b/drivers/block/zram/zcomp.c
@@ -118,12 +118,12 @@ ssize_t zcomp_available_show(const char
 
 struct zcomp_strm *zcomp_stream_get(struct zcomp *comp)
 {
-       return *get_cpu_ptr(comp->stream);
+       return *per_cpu_ptr(comp->stream, get_cpu_light());
 }
 
 void zcomp_stream_put(struct zcomp *comp)
 {
-       put_cpu_ptr(comp->stream);
+       put_cpu_light();
 }
 
 int zcomp_compress(struct zcomp_strm *zstrm,