linux-kernel - Re: + file-lock-reorder-struct-file_lock-to-save-space-on-64-bit-builds.pa tch added to -mm tree

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Date:	Sun, 13 Jul 2008 17:32:22 -0400
From:	"J. Bruce Fields" <bfields@...ldses.org>
To:	richard@....demon.co.uk
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org
Subject: Re: +
	file-lock-reorder-struct-file_lock-to-save-space-on-64-bit-builds.pa
	tch added to -mm tree

Thanks, applied to my queue of nfsd and locks stuff for 2.6.27 at:

	git://linux-nfs.org/~bfields/linux.git for-2.6.27

--b.

On Fri, Jul 11, 2008 at 05:20:49PM -0700, akpm@...ux-foundation.org wrote:
> Subject: file lock: reorder struct file_lock to save space on 64 bit builds
> From: Richard Kennedy <richard@....demon.co.uk>
> 
> Reduce sizeof struct file_lock by 8 on 64 bit builds allowing +1 objects
> per slab in the file_lock_cache
> 
> Signed-off-by: Richard Kennedy <richard@....demon.co.uk>
> Cc: "J. Bruce Fields" <bfields@...ldses.org>
> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
> ---
> 
>  include/linux/fs.h |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff -puN include/linux/fs.h~file-lock-reorder-struct-file_lock-to-save-space-on-64-bit-builds include/linux/fs.h
> --- a/include/linux/fs.h~file-lock-reorder-struct-file_lock-to-save-space-on-64-bit-builds
> +++ a/include/linux/fs.h
> @@ -952,12 +952,12 @@ struct file_lock {
>  	struct list_head fl_link;	/* doubly linked list of all locks */
>  	struct list_head fl_block;	/* circular list of blocked processes */
>  	fl_owner_t fl_owner;
> +	unsigned char fl_flags;
> +	unsigned char fl_type;
>  	unsigned int fl_pid;
>  	struct pid *fl_nspid;
>  	wait_queue_head_t fl_wait;
>  	struct file *fl_file;
> -	unsigned char fl_flags;
> -	unsigned char fl_type;
>  	loff_t fl_start;
>  	loff_t fl_end;
>  
> _
> 
> Patches currently in -mm which might be from richard@....demon.co.uk are
> 
> linux-next.patch
> shrink-struct-pid-by-removing-padding-on-64-bit-builds.patch
> file-lock-reorder-struct-file_lock-to-save-space-on-64-bit-builds.patch
> 
--
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