Btrfs: section mismatch warnings

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Hello everybody,

compiling btrfs into the kernel results in section mismatch warnings. __exit
functions are called where they are not allowed to. The attached patch fixes
this for me. Not sure if it is correct though.

Signed-off-by: Christian Hesse <mail@earthworm.de>
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Regards,
Chris

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 4af1c0d..0229e69 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -666,7 +666,7 @@
 	trans_wq = create_workqueue("btrfs");
 }
 
-void __exit btrfs_exit_transaction_sys(void)
+void btrfs_exit_transaction_sys(void)
 {
 	destroy_workqueue(trans_wq);
 }