[PATCH] Export __locks_copy_lock() so modular lockd builds

[Roland Dreier <rdreier@cisco.com>]

Commit 1a747ee0 ("locks: don't call ->copy_lock methods on return of
conflicting locks") changed fs/lockd/svclock.c to call
__locks_copy_lock() instead of locks_copy_lock(), but lockd can be built
as a module and __locks_copy_lock() is not exported, which causes a
build error

    ERROR: "__locks_copy_lock" [fs/lockd/lockd.ko] undefined!

with CONFIG_LOCKD=m.

Fix this by exporting __locks_copy_lock().

Signed-off-by: Roland Dreier <rolandd@cisco.com>
---
 fs/locks.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/fs/locks.c b/fs/locks.c
index e1ea2fe..44d9a6a 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -236,6 +236,7 @@ void __locks_copy_lock(struct file_lock *new, const struct file_lock *fl)
 	new->fl_ops = NULL;
 	new->fl_lmops = NULL;
 }
+EXPORT_SYMBOL(__locks_copy_lock);
 
 void locks_copy_lock(struct file_lock *new, struct file_lock *fl)
 {