linux-kernel - Re: linux-next: manual merge of the writeback tree with the vfs tree

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Date:	Sat, 23 Jul 2011 22:43:46 +0800
From:	Wu Fengguang <fengguang.wu@...el.com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	"linux-next@...r.kernel.org" <linux-next@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Christoph Hellwig <hch@...radead.org>,
	Al Viro <viro@...IV.linux.org.uk>
Subject: Re: linux-next: manual merge of the writeback tree with the vfs
 tree

Hi Stephen,

On Mon, Jul 18, 2011 at 03:29:44PM +0800, Stephen Rothwell wrote:
> Hi Wu,
> 
> Today's linux-next merge of the writeback tree got a conflict in
> mm/filemap.c between commit ba96a361e21b ("fs: kill i_alloc_sem") from
> the vfs tree and commit f758eeabeb96 ("writeback: split
> inode_wb_list_lock into bdi_writeback.list_lock") from the writeback tree.
> 
> I fixed it up (see below) and can carry the fix as necessary.

OK, thank you very much!

Cheers,
Fengguang

> diff --cc mm/filemap.c
> index f820e60,1e492c3..0000000
> --- a/mm/filemap.c
> +++ b/mm/filemap.c
> @@@ -78,7 -78,10 +78,7 @@@
>    *  ->i_mutex			(generic_file_buffered_write)
>    *    ->mmap_sem		(fault_in_pages_readable->do_page_fault)
>    *
> -  *  inode_wb_list_lock
>  - *  ->i_mutex
>  - *    ->i_alloc_sem             (various)
>  - *
> +  *  bdi->wb.list_lock
>    *    sb_lock			(fs/fs-writeback.c)
>    *    ->mapping->tree_lock	(__sync_single_inode)
>    *
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