linux-ext4 - Re: [PATCH 5/7] ext4: Convert filesystem to the new truncate calling convention

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Date:	Tue, 22 Sep 2009 15:36:04 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Jan Kara <jack@...e.cz>
Cc:	linux-fsdevel@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	linux-ext4@...r.kernel.org, linux-mm@...ck.org, npiggin@...e.de,
	tytso@....edu
Subject: Re: [PATCH 5/7] ext4: Convert filesystem to the new truncate
	calling convention

On Thu, Sep 17, 2009 at 05:21:45PM +0200, Jan Kara wrote:
> CC: linux-ext4@...r.kernel.org
> CC: tytso@....edu
> Signed-off-by: Jan Kara <jack@...e.cz>
> ---
>  fs/ext4/file.c  |    2 +-
>  fs/ext4/inode.c |  166 ++++++++++++++++++++++++++++++++----------------------
>  2 files changed, 99 insertions(+), 69 deletions(-)
> 
> diff --git a/fs/ext4/file.c b/fs/ext4/file.c
> index 3f1873f..22f49d7 100644
> --- a/fs/ext4/file.c
> +++ b/fs/ext4/file.c
> @@ -198,7 +198,7 @@ const struct file_operations ext4_file_operations = {
>  };
>  
>  const struct inode_operations ext4_file_inode_operations = {
> -	.truncate	= ext4_truncate,
> +	.new_truncate	= 1,
>  	.setattr	= ext4_setattr,
>  	.getattr	= ext4_getattr,
>  #ifdef CONFIG_EXT4_FS_XATTR
> diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
> index 58492ab..be25874 100644
> --- a/fs/ext4/inode.c
> +++ b/fs/ext4/inode.c
> @@ -3354,6 +3354,7 @@ static int ext4_journalled_set_page_dirty(struct page *page)
>  }
>  
>  static const struct address_space_operations ext4_ordered_aops = {
> +	.new_writepage		= 1,

No.  We already have one half-finished series here; mixing it with another
one is not going to happen.  Such flags are tolerable only as bisectability
helpers.  They *must* disappear by the end of series.  Before it can be
submitted for merge.

In effect, you are mixing truncate switchover with your writepage one.
Please, split and reorder.
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