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SubjectRe: [PATCH 52/56] drivers/char/virtio: support compiling out splice
On Thu, Nov 13, 2014 at 10:23:29PM +0100, Pieter Smith wrote:
> Compile out splice support from virtio character driver 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@boesman.nl>
> ---
> drivers/char/virtio_console.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
> index b585b47..de5e2cb 100644
> --- a/drivers/char/virtio_console.c
> +++ b/drivers/char/virtio_console.c
> @@ -870,6 +870,7 @@ struct sg_list {
> struct scatterlist *sg;
> };
>
> +#ifdef CONFIG_SYSCALL_SPLICE
> static int pipe_to_sg(struct pipe_inode_info *pipe, struct pipe_buffer *buf,
> struct splice_desc *sd)
> {
> @@ -976,6 +977,7 @@ error_out:
> pipe_unlock(pipe);
> return ret;
> }
> +#endif /* #ifdef CONFIG_SYSCALL_SPLICE */

Not worth the #ifdef mess.


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