[PATCH] export rwsem downgrade function

This should do the trick.

[PATCH] export rwsem downgrade function
This should do the trick.
ac7823e4 · David Howells · Linus Torvalds · 08f9788a · ac7823e4
Commit ac7823e4 authored Jul 28, 2002 by David Howells Committed by Linus Torvalds Jul 28, 2002
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lib/rwsem.c lib/rwsem.c +1 -0

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--- a/lib/rwsem.c
+++ b/lib/rwsem.c
@@ -236,6 +236,7 @@ struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem)
 EXPORT_SYMBOL_NOVERS(rwsem_down_read_failed);
 EXPORT_SYMBOL_NOVERS(rwsem_down_write_failed);
 EXPORT_SYMBOL_NOVERS(rwsem_wake);
+EXPORT_SYMBOL_NOVERS(rwsem_downgrade_wake);
 #if RWSEM_DEBUG
 EXPORT_SYMBOL(rwsemtrace);
 #endif