From 5f562df5f59340eae4272501b974903f48d2ad92 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 5 Apr 2013 01:27:12 -0500 Subject: [PATCH] libceph: format class info at init time An object class method is formatted using a pagelist which contains the class name, the method name, and the data concatenated into an osd request's outbound data. Currently when a class op is initialized in osd_req_op_cls_init(), the lengths of and pointers to these three items are recorded. Later, when the op is getting formatted into the request message, a new pagelist is created and that is when these items get copied into the pagelist. This patch makes it so the pagelist to hold these items is created when the op is initialized instead. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 3 ++- net/ceph/osd_client.c | 29 +++++++++++++++-------------- 2 files changed, 17 insertions(+), 15 deletions(-) diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 144d57cbef9e..71c41575646d 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -93,8 +93,9 @@ struct ceph_osd_req_op { const char *class_name; const char *method_name; const void *request_data; - u32 request_data_len; + struct ceph_osd_data *request_info; struct ceph_osd_data *response_data; + u32 request_data_len; __u8 class_len; __u8 method_len; __u8 argc; diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index ad24f210bf0c..db2624860384 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -399,28 +399,39 @@ void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, const void *request_data, size_t request_data_size) { struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, opcode); + struct ceph_pagelist *pagelist; size_t payload_len = 0; size_t size; BUG_ON(opcode != CEPH_OSD_OP_CALL); + pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); + BUG_ON(!pagelist); + ceph_pagelist_init(pagelist); + op->cls.class_name = class; size = strlen(class); BUG_ON(size > (size_t) U8_MAX); op->cls.class_len = size; + ceph_pagelist_append(pagelist, class, size); payload_len += size; op->cls.method_name = method; size = strlen(method); BUG_ON(size > (size_t) U8_MAX); op->cls.method_len = size; + ceph_pagelist_append(pagelist, method, size); payload_len += size; op->cls.request_data = request_data; BUG_ON(request_data_size > (size_t) U32_MAX); op->cls.request_data_len = (u32) request_data_size; + ceph_pagelist_append(pagelist, request_data, request_data_size); payload_len += request_data_size; + op->cls.request_info = &osd_req->r_data_out; + ceph_osd_data_pagelist_init(op->cls.request_info, pagelist); + op->cls.argc = 0; /* currently unused */ op->payload_len = payload_len; @@ -456,7 +467,6 @@ static u64 osd_req_encode_op(struct ceph_osd_request *req, { struct ceph_osd_req_op *src; u64 request_data_len = 0; - struct ceph_pagelist *pagelist; BUG_ON(which >= req->r_num_ops); src = &req->r_ops[which]; @@ -485,23 +495,14 @@ static u64 osd_req_encode_op(struct ceph_osd_request *req, WARN_ON(src->extent.osd_data != &req->r_data_in); break; case CEPH_OSD_OP_CALL: - pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); - BUG_ON(!pagelist); - ceph_pagelist_init(pagelist); - dst->cls.class_len = src->cls.class_len; dst->cls.method_len = src->cls.method_len; dst->cls.indata_len = cpu_to_le32(src->cls.request_data_len); - ceph_pagelist_append(pagelist, src->cls.class_name, - src->cls.class_len); - ceph_pagelist_append(pagelist, src->cls.method_name, - src->cls.method_len); - ceph_pagelist_append(pagelist, src->cls.request_data, - src->cls.request_data_len); - ceph_osd_data_pagelist_init(&req->r_data_out, pagelist); - WARN_ON(src->cls.response_data != &req->r_data_in); - request_data_len = pagelist->length; + WARN_ON(src->cls.request_info != &req->r_data_out); + BUG_ON(src->cls.request_info->type != + CEPH_OSD_DATA_TYPE_PAGELIST); + request_data_len = src->cls.request_info->pagelist->length; break; case CEPH_OSD_OP_STARTSYNC: break; -- 2.20.1