linux-kernel - Re: [patch 6/7] reiser4: writeback

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Date:	Sat, 06 Feb 2010 02:07:48 +0100
From:	Laurent Riffard <laurent.riffard@...e.fr>
To:	linux-kernel@...r.kernel.org
Cc:	reiserfs-devel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [patch 6/7] reiser4: writeback_inodes implementation

Hi Edward,

Le 02/02/2010 02:56, Edward Shishkin a écrit :
> . add reiser4 implementation of ->writeback_inodes()
>   super operation;
> . cleanup comments.
> 
> Signed-off-by: Edward Shishkin <edward.shishkin@...il.com>
> ---
>  fs/reiser4/context.c    |    3 +-
>  fs/reiser4/context.h    |    2 -
>  fs/reiser4/entd.c       |    7 ++++--
>  fs/reiser4/page_cache.c |   12 +++++------
>  fs/reiser4/super_ops.c  |   49 +++++++++++++++++++++++++++++-------------------
>  fs/reiser4/txnmgr.c     |    2 -
>  6 files changed, 45 insertions(+), 30 deletions(-)
> 
[...]
>  
> Index: linux-2.6.33-rc5-mm1/fs/reiser4/super_ops.c
> ===================================================================
> --- linux-2.6.33-rc5-mm1.orig/fs/reiser4/super_ops.c
> +++ linux-2.6.33-rc5-mm1/fs/reiser4/super_ops.c
> @@ -379,48 +379,59 @@ static void reiser4_clear_inode(struct i
[...]
> -static void reiser4_sync_inodes(struct super_block *super,
> -			       struct writeback_control *wbc)
> +static int reiser4_writeback_inodes(struct super_block *super,
> +				    struct bdi_writeback *wb,
> +				    struct writeback_control *wbc)
>  {
> -	reiser4_context *ctx;
> +	int ret;
>  	long to_write;
> +	reiser4_context *ctx;
>  
>  	if (wbc->for_kupdate)
>  		/* reiser4 has its own means of periodical write-out */
> -		return;
> -
> -	to_write = wbc->nr_to_write;
> +		goto skip;
>  	assert("vs-49", wbc->older_than_this == NULL);
>  
> +	spin_unlock(&inode_lock);

It seems that reiser4 can't be built as a module because of these access to inode_lock...

Kernel: arch/x86/boot/bzImage is ready  (#13)
  Building modules, stage 2.
  MODPOST 188 modules
ERROR: "inode_lock" [fs/reiser4/reiser4.ko] undefined!
make[1]: *** [__modpost] Erreur 1
make: *** [modules] Erreur 2

~~
laurent


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