netdev - Re: [PATCH] replace deprecated RW_LOCK

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Message-ID: <49400B7F.7040607@cosmosbay.com>
Date:	Wed, 10 Dec 2008 19:33:35 +0100
From:	Eric Dumazet <dada1@...mosbay.com>
To:	Steven Rostedt <rostedt@...dmis.org>
CC:	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	"David S. Miller" <davem@...emloft.net>,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: [PATCH] replace deprecated RW_LOCK_UNLOCKED in net/dccp/proto.c

cced netdev

Steven Rostedt a écrit :
> The following patch is in:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace.git
> 
>     branch: cleanups
> 
> 
> Steven Rostedt (1):
>       replace deprecated RW_LOCK_UNLOCKED in net/dccp/proto.c
> 
> ----
>  net/dccp/proto.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> ---------------------------
> commit 3e1de819261b68a48b09719694c7e3579a8e4186
> Author: Steven Rostedt <srostedt@...hat.com>
> Date:   Wed Dec 10 12:49:47 2008 -0500
> 
>     replace deprecated RW_LOCK_UNLOCKED in net/dccp/proto.c
>     
>     Impact: clean up
>     
>     RW_LOCK_UNLOCKED has been deprecated and superseded by
>     __RW_LOCK_UNLOCKED(name).  This patch removes one of the last
>     remaining users of it.
>     
>     Signed-off-by: Steven Rostedt <srostedt@...hat.com>
> 
> diff --git a/net/dccp/proto.c b/net/dccp/proto.c
> index d0bd348..e6e54a7 100644
> --- a/net/dccp/proto.c
> +++ b/net/dccp/proto.c
> @@ -45,7 +45,7 @@ atomic_t dccp_orphan_count = ATOMIC_INIT(0);
>  EXPORT_SYMBOL_GPL(dccp_orphan_count);
>  
>  struct inet_hashinfo __cacheline_aligned dccp_hashinfo = {
> -	.lhash_lock	= RW_LOCK_UNLOCKED,
> +	.lhash_lock	= __RW_LOCK_UNLOCKED(dccp_hashinfo.lhash_lock),
>  	.lhash_users	= ATOMIC_INIT(0),
>  	.lhash_wait = __WAIT_QUEUE_HEAD_INITIALIZER(dccp_hashinfo.lhash_wait),
>  };
> --

Hum... this rwlock doesnt exist anymore on net-next-2.6, all this stuff
was converted to RCU for upcoming 2.6.29

struct inet_hashinfo dccp_hashinfo;
EXPORT_SYMBOL_GPL(dccp_hashinfo);

I guess such a patch wont ease David job when 2.6.29 merge window opens


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