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linux/fs/pipe.c
Peter Zijlstra 023d43c7b5 lockdep: Fix lockdep annotation for pipe_double_lock() 
The presumed use of the pipe_double_lock() routine is to lock 2 locks in
a deadlock free way by ordering the locks by their address. However it
fails to keep the specified lock classes in order and explicitly
annotates a deadlock.

Rectify this.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Miklos Szeredi <mszeredi@suse.cz>
LKML-Reference: <1248163763.15751.11098.camel@twins>
2009-07-22 21:14:14 +02:00

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