From e01e79273b251dbb35ff2522a688229b09481923 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Wed, 14 Nov 2012 12:25:18 -0600 Subject: [PATCH] rbd: open code rbd_calc_raw_layout() This patch gets rid of rbd_calc_raw_layout() by simply open coding it in its one caller. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- drivers/block/rbd.c | 55 +++++++++++++++------------------------------ 1 file changed, 18 insertions(+), 37 deletions(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index eee0d3649dcf..f5f4e4a8fc87 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1032,7 +1032,7 @@ static struct ceph_osd_req_op *rbd_create_rw_op(int opcode, u32 payload_len) return NULL; /* * op extent offset and length will be set later on - * in calc_raw_layout() + * after ceph_calc_file_object_mapping(). */ op->op = opcode; op->payload_len = payload_len; @@ -1101,40 +1101,6 @@ static void rbd_layout_init(struct ceph_file_layout *layout, u64 pool_id) layout->fl_pg_pool = cpu_to_le32((u32) pool_id); } -int rbd_calc_raw_layout(struct ceph_file_layout *layout, - u64 off, u64 *plen, u64 *bno, - struct ceph_osd_request *req, - struct ceph_osd_req_op *op) -{ - u64 orig_len = *plen; - u64 objoff, objlen; /* extent in object */ - int r; - - /* object extent? */ - r = ceph_calc_file_object_mapping(layout, off, orig_len, bno, - &objoff, &objlen); - if (r < 0) - return r; - if (objlen < orig_len) { - *plen = objlen; - dout(" skipping last %llu, final file extent %llu~%llu\n", - orig_len - *plen, off, *plen); - } - - if (op->op == CEPH_OSD_OP_READ || op->op == CEPH_OSD_OP_WRITE) { - op->extent.offset = objoff; - op->extent.length = objlen; - } - req->r_num_pages = calc_pages_for(off, *plen); - req->r_page_alignment = off & ~PAGE_MASK; - if (op->op == CEPH_OSD_OP_WRITE) - op->payload_len = *plen; - - dout("calc_layout bno=%llx %llu~%llu (%d pages)\n", - *bno, objoff, objlen, req->r_num_pages); - return 0; -} - /* * Send ceph osd request */ @@ -1158,6 +1124,8 @@ static int rbd_do_request(struct request *rq, struct ceph_osd_request *osd_req; int ret; u64 bno; + u64 obj_off = 0; + u64 obj_len = 0; struct timespec mtime = CURRENT_TIME; struct rbd_request *rbd_req; struct ceph_osd_client *osdc; @@ -1201,9 +1169,22 @@ static int rbd_do_request(struct request *rq, osd_req->r_oid_len = strlen(osd_req->r_oid); rbd_layout_init(&osd_req->r_file_layout, rbd_dev->spec->pool_id); - ret = rbd_calc_raw_layout(&osd_req->r_file_layout, - ofs, &len, &bno, osd_req, op); + ret = ceph_calc_file_object_mapping(&osd_req->r_file_layout, ofs, len, + &bno, &obj_off, &obj_len); rbd_assert(ret == 0); + if (obj_len < len) { + dout(" skipping last %llu, final file extent %llu~%llu\n", + len - obj_len, ofs, obj_len); + len = obj_len; + } + if (op->op == CEPH_OSD_OP_READ || op->op == CEPH_OSD_OP_WRITE) { + op->extent.offset = obj_off; + op->extent.length = obj_len; + if (op->op == CEPH_OSD_OP_WRITE) + op->payload_len = obj_len; + } + osd_req->r_num_pages = calc_pages_for(ofs, len); + osd_req->r_page_alignment = ofs & ~PAGE_MASK; ceph_osdc_build_request(osd_req, ofs, len, 1, op, snapc, snapid, &mtime);