X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=kernel%2Frwsem.c;h=cfff1435bdfb2f1e6d8a88d797c2a205f9145daf;hb=4f81d715b90b7ebe049dd906511c47956086ad44;hp=b3c6c3fcd8474237a2e41ab4db87ee04c2435b7b;hpb=8665ffc9215be1fe56f97500dad0440c9b644f5c;p=firefly-linux-kernel-4.4.55.git

diff --git a/kernel/rwsem.c b/kernel/rwsem.c
index b3c6c3fcd847..cfff1435bdfb 100644
--- a/kernel/rwsem.c
+++ b/kernel/rwsem.c
@@ -126,6 +126,15 @@ void _down_write_nest_lock(struct rw_semaphore *sem, struct lockdep_map *nest)
 
 EXPORT_SYMBOL(_down_write_nest_lock);
 
+void down_read_non_owner(struct rw_semaphore *sem)
+{
+	might_sleep();
+
+	__down_read(sem);
+}
+
+EXPORT_SYMBOL(down_read_non_owner);
+
 void down_write_nested(struct rw_semaphore *sem, int subclass)
 {
 	might_sleep();
@@ -136,6 +145,13 @@ void down_write_nested(struct rw_semaphore *sem, int subclass)
 
 EXPORT_SYMBOL(down_write_nested);
 
+void up_read_non_owner(struct rw_semaphore *sem)
+{
+	__up_read(sem);
+}
+
+EXPORT_SYMBOL(up_read_non_owner);
+
 #endif