linux-kernel - Re: [PATCH 1/4] mm: cleancache: s/flush/invalidate/

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Message-ID: <4F104AD1.2080607@linux.vnet.ibm.com>
Date:	Fri, 13 Jan 2012 09:16:33 -0600
From:	Seth Jennings <sjenning@...ux.vnet.ibm.com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
CC:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	Dan Magenheimer <dan.magenheimer@...cle.com>,
	Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Jan Beulich <JBeulich@...ell.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Hugh Dickins <hughd@...gle.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Nitin Gupta <ngupta@...are.org>,
	Matthew Wilcox <matthew@....cx>,
	Chris Mason <chris.mason@...cle.com>,
	Rik Riel <riel@...hat.com>
Subject: Re: [PATCH 1/4] mm: cleancache: s/flush/invalidate/

Hey Konrad,

On 01/12/2012 02:36 PM, Konrad Rzeszutek Wilk wrote:
> From: Dan Magenheimer <dan.magenheimer@...cle.com>
> 
> Per akpm suggestions alter the use of the term flush to be
> invalidate. The next patch will do this across all MM.
> 
> This change is completely cosmetic.
> 
> [v9: akpm@...ux-foundation.org: change "flush" to "invalidate", part 3]
> 
> Signed-off-by: Dan Magenheimer <dan.magenheimer@...cle.com>
> Reviewed-by: Konrad Wilk <konrad.wilk@...cle.com>
> Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> Cc: Jan Beulich <JBeulich@...ell.com>
> Cc: Seth Jennings <sjenning@...ux.vnet.ibm.com>
> Cc: Jeremy Fitzhardinge <jeremy@...p.org>
> Cc: Hugh Dickins <hughd@...gle.com>
> Cc: Johannes Weiner <hannes@...xchg.org>
> Cc: Nitin Gupta <ngupta@...are.org>
> Cc: Matthew Wilcox <matthew@....cx>
> Cc: Chris Mason <chris.mason@...cle.com>
> Cc: Rik Riel <riel@...hat.com>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> [v10: Fixed  fs: move code out of buffer.c conflict change]
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
> ---
>  Documentation/vm/cleancache.txt |   37 +++++++++++++++++++------------------
>  fs/block_dev.c                  |    2 +-
>  fs/super.c                      |    2 +-
>  include/linux/cleancache.h      |   23 ++++++++++++++---------
>  mm/cleancache.c                 |   19 ++++++++++---------
>  mm/filemap.c                    |    2 +-
>  mm/truncate.c                   |   10 +++++-----
>  7 files changed, 51 insertions(+), 44 deletions(-)
snip
> diff --git a/fs/block_dev.c b/fs/block_dev.c
> index 69a5b6f..d6d5f29 100644
> --- a/fs/block_dev.c
> +++ b/fs/block_dev.c
> @@ -110,7 +110,7 @@ void invalidate_bdev(struct block_device *bdev)
>  	/* 99% of the time, we don't need to flush the cleancache on the bdev.
>  	 * But, for the strange corners, lets be cautious
>  	 */
> -	cleancache_flush_inode(mapping);
> +	cleancache_invalidate_inode(mapping);
>  }
>  EXPORT_SYMBOL(invalidate_bdev);

This hunk doesn't merge cleanly because there is no existing
cleancache code in fs/block_dev.c in v3.2 or any previous version.

Looking at the git log, doesn't look like any cleancache code was
ever merged into this file.

--
Seth


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