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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[firefly-linux-kernel-4.4.55.git]
/
kernel
/
rwsem.c
diff --git
a/kernel/rwsem.c
b/kernel/rwsem.c
index b3c6c3fcd8474237a2e41ab4db87ee04c2435b7b..cfff1435bdfb2f1e6d8a88d797c2a205f9145daf 100644
(file)
--- 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);
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();
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);
EXPORT_SYMBOL(down_write_nested);
+void up_read_non_owner(struct rw_semaphore *sem)
+{
+ __up_read(sem);
+}
+
+EXPORT_SYMBOL(up_read_non_owner);
+
#endif
#endif