linux-kernel - Re: [PATCH 05/56] fs/lustre: support compiling out splice

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Date:	Thu, 13 Nov 2014 14:09:33 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Pieter Smith <pieter@...sman.nl>
Cc:	"open list:STAGING SUBSYSTEM" <devel@...verdev.osuosl.org>,
	Dmitry Eremin <dmitry.eremin@...el.com>, Li Xi <lixi@....com>,
	Andreas Dilger <andreas.dilger@...el.com>,
	Peng Tao <bergwolf@...il.com>,
	Josh Triplett <josh@...htriplett.org>,
	Oleg Drokin <green@...uxhacker.ru>,
	Andrew Perepechko <andrew_perepechko@...atex.com>,
	JC Lafoucriere <jacques-charles.lafoucriere@....fr>,
	Jinshan Xiong <jinshan.xiong@...el.com>,
	"John L. Hammond" <john.hammond@...el.com>,
	Lai Siyao <lai.siyao@...el.com>,
	open list <linux-kernel@...r.kernel.org>,
	Al Viro <viro@...iv.linux.org.uk>
Subject: Re: [PATCH 05/56] fs/lustre: support compiling out splice

On Thu, Nov 13, 2014 at 10:22:42PM +0100, Pieter Smith wrote:
> Compile out splice support from lustre file-system when the splice-family of
> syscalls is not supported by the system (i.e. CONFIG_SYSCALL_SPLICE is
> undefined).
> 
> Signed-off-by: Pieter Smith <pieter@...sman.nl>
> ---
>  drivers/staging/lustre/lustre/llite/file.c           | 10 +++++++---
>  drivers/staging/lustre/lustre/llite/llite_internal.h |  2 ++
>  drivers/staging/lustre/lustre/llite/vvp_io.c         |  2 ++
>  3 files changed, 11 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
> index fd1b75a3..98573da 100644
> --- a/drivers/staging/lustre/lustre/llite/file.c
> +++ b/drivers/staging/lustre/lustre/llite/file.c
> @@ -1126,10 +1126,12 @@ restart:
>  				down_read(&lli->lli_trunc_sem);
>  			}
>  			break;
> +#ifdef CONFIG_SYSCALL_SPLICE
>  		case IO_SPLICE:
>  			vio->u.splice.cui_pipe = args->u.splice.via_pipe;
>  			vio->u.splice.cui_flags = args->u.splice.via_flags;
>  			break;
> +#endif /* #ifdef CONFIG_SYSCALL_SPLICE */

Not worth the #ifdef mess, sorry.

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