linux-kernel - spurious sparse warnings from linux/aio.h (was: 2.6.20-rc4-mm1)

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Date:	Fri, 12 Jan 2007 12:55:18 +0100
From:	Tilman Schmidt <tilman@...p.cc>
To:	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org,
	Suparna Bhattacharya <suparna@...ibm.com>
Subject: spurious sparse warnings from linux/aio.h (was: 2.6.20-rc4-mm1)

Andrew Morton schrieb:
> - Merged the "filesystem AIO patches".

This construct:

> --- linux-2.6.20-rc4/include/linux/aio.h        2007-01-06 23:34:08.000000000 -0800
> +++ devel/include/linux/aio.h   2007-01-11 21:36:16.000000000 -0800

> @@ -237,7 +243,8 @@ do {                                                                        \
>         }                                                               \
>  } while (0)
> 
> -#define io_wait_to_kiocb(wait) container_of(wait, struct kiocb, ki_wait)
> +#define io_wait_to_kiocb(io_wait) container_of(container_of(io_wait,   \
> +       struct wait_bit_queue, wait), struct kiocb, ki_wait)
> 
>  #include <linux/aio_abi.h>
> 

causes a sparse warning:

> include/linux/sched.h:1313:29: warning: symbol '__mptr' shadows an earlier one
> include/linux/sched.h:1313:29: originally declared here

for every source file referencing <linux/sched.h>.
Could that be avoided please?

Thanks
Tilman

-- 
Tilman Schmidt                    E-Mail: tilman@...p.cc
Bonn, Germany
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