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author | Ilya Dryomov <idryomov@gmail.com> | 2018-01-20 10:30:11 +0100 |
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committer | Ilya Dryomov <idryomov@gmail.com> | 2018-04-02 10:12:39 +0200 |
commit | b9e281c2b38804984d619e1d9efc4b9020bcb291 (patch) | |
tree | f60492d187e96375c3212679d4ca4a9ad3bcf146 /net/ceph/osd_client.c | |
parent | f9dcbc44cd317ee3c5e443db7f9a62f52689f08e (diff) | |
download | linux-stable-b9e281c2b38804984d619e1d9efc4b9020bcb291.tar.gz linux-stable-b9e281c2b38804984d619e1d9efc4b9020bcb291.tar.bz2 linux-stable-b9e281c2b38804984d619e1d9efc4b9020bcb291.zip |
libceph: introduce BVECS data type
In preparation for rbd "fancy" striping, introduce ceph_bvec_iter for
working with bio_vec array data buffers. The wrappers are trivial, but
make it look similar to ceph_bio_iter.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'net/ceph/osd_client.c')
-rw-r--r-- | net/ceph/osd_client.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 339d8773ebe8..407be0533c18 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -155,6 +155,13 @@ static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, } #endif /* CONFIG_BLOCK */ +static void ceph_osd_data_bvecs_init(struct ceph_osd_data *osd_data, + struct ceph_bvec_iter *bvec_pos) +{ + osd_data->type = CEPH_OSD_DATA_TYPE_BVECS; + osd_data->bvec_pos = *bvec_pos; +} + #define osd_req_op_data(oreq, whch, typ, fld) \ ({ \ struct ceph_osd_request *__oreq = (oreq); \ @@ -229,6 +236,17 @@ void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); #endif /* CONFIG_BLOCK */ +void osd_req_op_extent_osd_data_bvec_pos(struct ceph_osd_request *osd_req, + unsigned int which, + struct ceph_bvec_iter *bvec_pos) +{ + struct ceph_osd_data *osd_data; + + osd_data = osd_req_op_data(osd_req, which, extent, osd_data); + ceph_osd_data_bvecs_init(osd_data, bvec_pos); +} +EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvec_pos); + static void osd_req_op_cls_request_info_pagelist( struct ceph_osd_request *osd_req, unsigned int which, struct ceph_pagelist *pagelist) @@ -266,6 +284,23 @@ void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, } EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); +void osd_req_op_cls_request_data_bvecs(struct ceph_osd_request *osd_req, + unsigned int which, + struct bio_vec *bvecs, u32 bytes) +{ + struct ceph_osd_data *osd_data; + struct ceph_bvec_iter it = { + .bvecs = bvecs, + .iter = { .bi_size = bytes }, + }; + + osd_data = osd_req_op_data(osd_req, which, cls, request_data); + ceph_osd_data_bvecs_init(osd_data, &it); + osd_req->r_ops[which].cls.indata_len += bytes; + osd_req->r_ops[which].indata_len += bytes; +} +EXPORT_SYMBOL(osd_req_op_cls_request_data_bvecs); + 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) @@ -291,6 +326,8 @@ static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) case CEPH_OSD_DATA_TYPE_BIO: return (u64)osd_data->bio_length; #endif /* CONFIG_BLOCK */ + case CEPH_OSD_DATA_TYPE_BVECS: + return osd_data->bvec_pos.iter.bi_size; default: WARN(true, "unrecognized data type %d\n", (int)osd_data->type); return 0; @@ -831,6 +868,8 @@ static void ceph_osdc_msg_data_add(struct ceph_msg *msg, } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { ceph_msg_data_add_bio(msg, &osd_data->bio_pos, length); #endif + } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BVECS) { + ceph_msg_data_add_bvecs(msg, &osd_data->bvec_pos); } else { BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); } |