Re: [PATCH] libceph: support pages for class request data

[Josh Durgin <josh.durgin@inktank.com>]

Reviewed-by: Josh Durgin <josh.durgin@inktank.com>

On 04/19/2013 03:49 PM, Alex Elder wrote:
> Add the ability to provide an array of pages as outbound request
> data for object class method calls.
>
> Signed-off-by: Alex Elder <elder@inktank.com>
> ---
>   include/linux/ceph/osd_client.h |    5 +++++
>   net/ceph/osd_client.c           |   12 ++++++++++++
>   2 files changed, 17 insertions(+)
>
> diff --git a/include/linux/ceph/osd_client.h
> b/include/linux/ceph/osd_client.h
> index 4d84a2b..4191cd2 100644
> --- a/include/linux/ceph/osd_client.h
> +++ b/include/linux/ceph/osd_client.h
> @@ -273,6 +273,11 @@ extern void osd_req_op_extent_osd_data_bio(struct
> ceph_osd_request *,
>   extern void osd_req_op_cls_request_data_pagelist(struct ceph_osd_request *,
>   					unsigned int which,
>   					struct ceph_pagelist *pagelist);
> +extern void osd_req_op_cls_request_data_pages(struct ceph_osd_request *,
> +					unsigned int which,
> +					struct page **pages, u64 length,
> +					u32 alignment, bool pages_from_pool,
> +					bool own_pages);
>   extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request *,
>   					unsigned int which,
>   					struct page **pages, u64 length,
> diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
> index c842e87..467020c 100644
> --- a/net/ceph/osd_client.c
> +++ b/net/ceph/osd_client.c
> @@ -214,6 +214,18 @@ void osd_req_op_cls_request_data_pagelist(
>   }
>   EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist);
>
> +void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req,
> +			unsigned int which, struct page **pages, u64 length,
> +			u32 alignment, bool pages_from_pool, bool own_pages)
> +{
> +	struct ceph_osd_data *osd_data;
> +
> +	osd_data = osd_req_op_data(osd_req, which, cls, request_data);
> +	ceph_osd_data_pages_init(osd_data, pages, length, alignment,
> +				pages_from_pool, own_pages);
> +}
> +EXPORT_SYMBOL(osd_req_op_cls_request_data_pages);
> +
>   void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req,
>   			unsigned int which, struct page **pages, u64 length,
>   			u32 alignment, bool pages_from_pool, bool own_pages)
>