From a4ce40a9a7c1053ac2a41cf64255e44e356e5522 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 5 Apr 2013 01:27:12 -0500 Subject: [PATCH] libceph: combine initializing and setting osd data This ends up being a rather large patch but what it's doing is somewhat straightforward. Basically, this is replacing two calls with one. The first of the two calls is initializing a struct ceph_osd_data with data (either a page array, a page list, or a bio list); the second is setting an osd request op so it associates that data with one of the op's parameters. In place of those two will be a single function that initializes the op directly. That means we sort of fan out a set of the needed functions: - extent ops with pages data - extent ops with pagelist data - extent ops with bio list data and - class ops with page data for receiving a response We also have define another one, but it's only used internally: - class ops with pagelist data for request parameters Note that we *still* haven't gotten rid of the osd request's r_data_in and r_data_out fields. All the osd ops refer to them for their data. For now, these data fields are pointers assigned to the appropriate r_data_* field when these new functions are called. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- drivers/block/rbd.c | 20 ++--- fs/ceph/addr.c | 12 ++- fs/ceph/file.c | 3 +- include/linux/ceph/osd_client.h | 43 +++++---- net/ceph/osd_client.c | 155 +++++++++++++++++++++++++------- 5 files changed, 161 insertions(+), 72 deletions(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index db29783436c8..6f7a52cf75c7 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1592,7 +1592,6 @@ static int rbd_img_request_fill_bio(struct rbd_img_request *img_request, rbd_assert(resid > 0); while (resid) { struct ceph_osd_request *osd_req; - struct ceph_osd_data *osd_data; const char *object_name; unsigned int clone_size; u64 offset; @@ -1625,13 +1624,10 @@ static int rbd_img_request_fill_bio(struct rbd_img_request *img_request, obj_request->osd_req = osd_req; obj_request->callback = rbd_img_obj_callback; - osd_data = write_request ? &osd_req->r_data_out - : &osd_req->r_data_in; osd_req_op_extent_init(osd_req, 0, opcode, offset, length, 0, 0); - ceph_osd_data_bio_init(osd_data, obj_request->bio_list, - obj_request->length); - osd_req_op_extent_osd_data(osd_req, 0, osd_data); + osd_req_op_extent_osd_data_bio(osd_req, 0, write_request, + obj_request->bio_list, obj_request->length); rbd_osd_req_format(obj_request, write_request); rbd_img_obj_request_add(img_request, obj_request); @@ -1821,7 +1817,6 @@ static int rbd_obj_method_sync(struct rbd_device *rbd_dev, { struct ceph_osd_client *osdc = &rbd_dev->rbd_client->client->osdc; struct rbd_obj_request *obj_request; - struct ceph_osd_data *osd_data; struct page **pages; u32 page_count; int ret; @@ -1851,13 +1846,12 @@ static int rbd_obj_method_sync(struct rbd_device *rbd_dev, if (!obj_request->osd_req) goto out; - osd_data = &obj_request->osd_req->r_data_in; osd_req_op_cls_init(obj_request->osd_req, 0, CEPH_OSD_OP_CALL, class_name, method_name, outbound, outbound_size); - ceph_osd_data_pages_init(osd_data, obj_request->pages, inbound_size, + osd_req_op_cls_response_data_pages(obj_request->osd_req, 0, + obj_request->pages, inbound_size, 0, false, false); - osd_req_op_cls_response_data(obj_request->osd_req, 0, osd_data); rbd_osd_req_format(obj_request, false); ret = rbd_obj_request_submit(osdc, obj_request); @@ -2037,7 +2031,6 @@ static int rbd_obj_read_sync(struct rbd_device *rbd_dev, { struct ceph_osd_client *osdc = &rbd_dev->rbd_client->client->osdc; struct rbd_obj_request *obj_request; - struct ceph_osd_data *osd_data; struct page **pages = NULL; u32 page_count; size_t size; @@ -2061,14 +2054,13 @@ static int rbd_obj_read_sync(struct rbd_device *rbd_dev, if (!obj_request->osd_req) goto out; - osd_data = &obj_request->osd_req->r_data_in; osd_req_op_extent_init(obj_request->osd_req, 0, CEPH_OSD_OP_READ, offset, length, 0, 0); - ceph_osd_data_pages_init(osd_data, obj_request->pages, + osd_req_op_extent_osd_data_pages(obj_request->osd_req, 0, false, + obj_request->pages, obj_request->length, obj_request->offset & ~PAGE_MASK, false, false); - osd_req_op_extent_osd_data(obj_request->osd_req, 0, osd_data); rbd_osd_req_format(obj_request, false); ret = rbd_obj_request_submit(osdc, obj_request); diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index cc57104a7266..27d62070a8e9 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -245,7 +245,7 @@ static void finish_read(struct ceph_osd_request *req, struct ceph_msg *msg) dout("finish_read %p req %p rc %d bytes %d\n", inode, req, rc, bytes); /* unlock all pages, zeroing any data we didn't read */ - osd_data = &req->r_data_in; + osd_data = osd_req_op_extent_osd_data(req, 0, false); BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); num_pages = calc_pages_for((u64)osd_data->alignment, (u64)osd_data->length); @@ -343,8 +343,7 @@ static int start_read(struct inode *inode, struct list_head *page_list, int max) } pages[i] = page; } - BUG_ON(req->r_ops[0].extent.osd_data != &req->r_data_in); - ceph_osd_data_pages_init(req->r_ops[0].extent.osd_data, pages, len, 0, + osd_req_op_extent_osd_data_pages(req, 0, false, pages, len, 0, false, false); req->r_callback = finish_read; req->r_inode = inode; @@ -572,7 +571,7 @@ static void writepages_finish(struct ceph_osd_request *req, long writeback_stat; unsigned issued = ceph_caps_issued(ci); - osd_data = &req->r_data_out; + osd_data = osd_req_op_extent_osd_data(req, 0, true); BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); num_pages = calc_pages_for((u64)osd_data->alignment, (u64)osd_data->length); @@ -917,9 +916,8 @@ get_more_pages: dout("writepages got %d pages at %llu~%llu\n", locked_pages, offset, len); - BUG_ON(req->r_ops[0].extent.osd_data != &req->r_data_out); - ceph_osd_data_pages_init(req->r_ops[0].extent.osd_data, pages, - len, 0, !!pool, false); + osd_req_op_extent_osd_data_pages(req, 0, true, pages, len, 0, + !!pool, false); pages = NULL; /* request message now owns the pages array */ pool = NULL; diff --git a/fs/ceph/file.c b/fs/ceph/file.c index cddc10fd7cf9..0f9c4095614b 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -574,8 +574,7 @@ more: own_pages = true; } } - BUG_ON(req->r_ops[0].extent.osd_data != &req->r_data_out); - ceph_osd_data_pages_init(req->r_ops[0].extent.osd_data, pages, len, + osd_req_op_extent_osd_data_pages(req, 0, true, pages, len, page_align, false, own_pages); /* BUG_ON(vino.snap != CEPH_NOSNAP); */ diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 71c41575646d..f8a00b48e550 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -240,17 +240,39 @@ extern void osd_req_op_extent_init(struct ceph_osd_request *osd_req, u64 truncate_size, u32 truncate_seq); extern void osd_req_op_extent_update(struct ceph_osd_request *osd_req, unsigned int which, u64 length); -extern void osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, + +extern struct ceph_osd_data *osd_req_op_extent_osd_data( + struct ceph_osd_request *osd_req, + unsigned int which, bool write_request); +extern struct ceph_osd_data *osd_req_op_cls_response_data( + struct ceph_osd_request *osd_req, + unsigned int which); + +extern void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *, + unsigned int which, bool write_request, + struct page **pages, u64 length, + u32 alignment, bool pages_from_pool, + bool own_pages); +extern void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *, + unsigned int which, bool write_request, + struct ceph_pagelist *pagelist); +#ifdef CONFIG_BLOCK +extern void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *, + unsigned int which, bool write_request, + struct bio *bio, size_t bio_length); +#endif /* CONFIG_BLOCK */ + +extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request *, unsigned int which, - struct ceph_osd_data *osd_data); + struct page **pages, u64 length, + u32 alignment, bool pages_from_pool, + bool own_pages); + extern void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, u16 opcode, const char *class, const char *method, const void *request_data, size_t request_data_size); -extern void osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, - unsigned int which, - struct ceph_osd_data *response_data); extern void osd_req_op_watch_init(struct ceph_osd_request *osd_req, unsigned int which, u16 opcode, u64 cookie, u64 version, int flag); @@ -290,17 +312,6 @@ static inline void ceph_osdc_put_request(struct ceph_osd_request *req) kref_put(&req->r_kref, ceph_osdc_release_request); } -extern void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, - struct page **pages, u64 length, - u32 alignment, bool pages_from_pool, - bool own_pages); -extern void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, - struct ceph_pagelist *pagelist); -#ifdef CONFIG_BLOCK -extern void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, - struct bio *bio, size_t bio_length); -#endif /* CONFIG_BLOCK */ - extern int ceph_osdc_start_request(struct ceph_osd_client *osdc, struct ceph_osd_request *req, bool nofail); diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 932b8af8b8ee..86cb52404f17 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -1,3 +1,4 @@ + #include #include @@ -85,7 +86,7 @@ static void ceph_osd_data_init(struct ceph_osd_data *osd_data) osd_data->type = CEPH_OSD_DATA_TYPE_NONE; } -void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, +static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, struct page **pages, u64 length, u32 alignment, bool pages_from_pool, bool own_pages) { @@ -96,27 +97,131 @@ void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, osd_data->pages_from_pool = pages_from_pool; osd_data->own_pages = own_pages; } -EXPORT_SYMBOL(ceph_osd_data_pages_init); -void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, +static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, struct ceph_pagelist *pagelist) { osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; osd_data->pagelist = pagelist; } -EXPORT_SYMBOL(ceph_osd_data_pagelist_init); #ifdef CONFIG_BLOCK -void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, +static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, struct bio *bio, size_t bio_length) { osd_data->type = CEPH_OSD_DATA_TYPE_BIO; osd_data->bio = bio; osd_data->bio_length = bio_length; } -EXPORT_SYMBOL(ceph_osd_data_bio_init); #endif /* CONFIG_BLOCK */ +struct ceph_osd_data * +osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, + unsigned int which, bool write_request) +{ + BUG_ON(which >= osd_req->r_num_ops); + + /* return &osd_req->r_ops[which].extent.osd_data; */ + return write_request ? &osd_req->r_data_out : &osd_req->r_data_in; +} +EXPORT_SYMBOL(osd_req_op_extent_osd_data); + +struct ceph_osd_data * +osd_req_op_cls_request_info(struct ceph_osd_request *osd_req, + unsigned int which) +{ + BUG_ON(which >= osd_req->r_num_ops); + + /* return &osd_req->r_ops[which].cls.request_info; */ + return &osd_req->r_data_out; /* Request data is outgoing */ +} +EXPORT_SYMBOL(osd_req_op_cls_request_info); /* ??? */ + +struct ceph_osd_data * +osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, + unsigned int which) +{ + BUG_ON(which >= osd_req->r_num_ops); + + /* return &osd_req->r_ops[which].cls.response_data; */ + return &osd_req->r_data_in; /* Response data is incoming */ +} +EXPORT_SYMBOL(osd_req_op_cls_response_data); /* ??? */ + +void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, + unsigned int which, bool write_request, + 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_extent_osd_data(osd_req, which, write_request); + ceph_osd_data_pages_init(osd_data, pages, length, alignment, + pages_from_pool, own_pages); + + osd_req->r_ops[which].extent.osd_data = + osd_req_op_extent_osd_data(osd_req, which, write_request); +} +EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); + +void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, + unsigned int which, bool write_request, + struct ceph_pagelist *pagelist) +{ + struct ceph_osd_data *osd_data; + + osd_data = osd_req_op_extent_osd_data(osd_req, which, write_request); + ceph_osd_data_pagelist_init(osd_data, pagelist); + + osd_req->r_ops[which].extent.osd_data = + osd_req_op_extent_osd_data(osd_req, which, write_request); +} +EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); + +#ifdef CONFIG_BLOCK +void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, + unsigned int which, bool write_request, + struct bio *bio, size_t bio_length) +{ + struct ceph_osd_data *osd_data; + + osd_data = osd_req_op_extent_osd_data(osd_req, which, write_request); + ceph_osd_data_bio_init(osd_data, bio, bio_length); + + osd_req->r_ops[which].extent.osd_data = + osd_req_op_extent_osd_data(osd_req, which, write_request); +} +EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); +#endif /* CONFIG_BLOCK */ + +static void osd_req_op_cls_request_info_pagelist( + struct ceph_osd_request *osd_req, + unsigned int which, struct ceph_pagelist *pagelist) +{ + struct ceph_osd_data *osd_data; + + osd_data = osd_req_op_cls_request_info(osd_req, which); + ceph_osd_data_pagelist_init(osd_data, pagelist); + + osd_req->r_ops[which].cls.request_info = + osd_req_op_cls_request_info(osd_req, which); +} + +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) +{ + struct ceph_osd_data *osd_data; + + osd_data = osd_req_op_cls_response_data(osd_req, which); + ceph_osd_data_pages_init(osd_data, pages, length, alignment, + pages_from_pool, own_pages); + + osd_req->r_ops[which].cls.response_data = + osd_req_op_cls_response_data(osd_req, which); +} +EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); + static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) { switch (osd_data->type) { @@ -385,15 +490,6 @@ void osd_req_op_extent_update(struct ceph_osd_request *osd_req, } EXPORT_SYMBOL(osd_req_op_extent_update); -void osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, - unsigned int which, - struct ceph_osd_data *osd_data) -{ - BUG_ON(which >= osd_req->r_num_ops); - osd_req->r_ops[which].extent.osd_data = osd_data; -} -EXPORT_SYMBOL(osd_req_op_extent_osd_data); - void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, u16 opcode, const char *class, const char *method, const void *request_data, size_t request_data_size) @@ -429,22 +525,13 @@ void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 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); + osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); op->cls.argc = 0; /* currently unused */ op->payload_len = payload_len; } EXPORT_SYMBOL(osd_req_op_cls_init); -void osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, - unsigned int which, - struct ceph_osd_data *response_data) -{ - BUG_ON(which >= osd_req->r_num_ops); - osd_req->r_ops[which].cls.response_data = response_data; -} -EXPORT_SYMBOL(osd_req_op_cls_response_data); void osd_req_op_watch_init(struct ceph_osd_request *osd_req, unsigned int which, u16 opcode, @@ -547,7 +634,6 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, bool use_mempool) { struct ceph_osd_request *req; - struct ceph_osd_data *osd_data; u64 objnum = 0; u64 objoff = 0; u64 objlen = 0; @@ -561,8 +647,6 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, GFP_NOFS); if (!req) return ERR_PTR(-ENOMEM); - osd_data = opcode == CEPH_OSD_OP_WRITE ? &req->r_data_out - : &req->r_data_in; req->r_flags = flags; @@ -585,7 +669,6 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, osd_req_op_extent_init(req, 0, opcode, objoff, objlen, truncate_size, truncate_seq); - osd_req_op_extent_osd_data(req, 0, osd_data); /* * A second op in the ops array means the caller wants to @@ -2171,8 +2254,8 @@ int ceph_osdc_readpages(struct ceph_osd_client *osdc, /* it may be a short read due to an object boundary */ - ceph_osd_data_pages_init(&req->r_data_in, pages, *plen, page_align, - false, false); + osd_req_op_extent_osd_data_pages(req, 0, false, + pages, *plen, page_align, false, false); dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", off, *plen, *plen, page_align); @@ -2214,7 +2297,7 @@ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, return PTR_ERR(req); /* it may be a short write due to an object boundary */ - ceph_osd_data_pages_init(&req->r_data_out, pages, len, page_align, + osd_req_op_extent_osd_data_pages(req, 0, true, pages, len, page_align, false, false); dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); @@ -2308,8 +2391,14 @@ static struct ceph_msg *get_reply(struct ceph_connection *con, m = ceph_msg_get(req->r_reply); if (data_len > 0) { - struct ceph_osd_data *osd_data = &req->r_data_in; + struct ceph_osd_data *osd_data; + /* + * XXX This is assuming there is only one op containing + * XXX page data. Probably OK for reads, but this + * XXX ought to be done more generally. + */ + osd_data = osd_req_op_extent_osd_data(req, 0, false); if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { if (osd_data->pages && unlikely(osd_data->length < data_len)) { -- 2.20.1