From: Alex Elder <elder@inktank.com>
Date: Fri, 19 Apr 2013 20:34:49 +0000 (-0500)
Subject: libceph: support pages for class request data
X-Git-Tag: firefly_0821_release~3680^2~249^2~121
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6c57b5545d46e276381a15a59283c984cf3f94e3;p=firefly-linux-kernel-4.4.55.git

libceph: support pages for class request data

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

diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
index 4d84a2b44f18..4191cd2c55e5 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 c842e877d504..467020c560b2 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)