From 2169aea649c08374bec7d220a3b8f64712275356 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Mon, 25 Feb 2013 16:13:08 -0800 Subject: libceph: calculate placement based on the internal data types Instead of using the old ceph_object_layout struct, update our internal ceph_calc_object_layout method to use the ceph_pg type. This allows us to pass the full 32-bit precision of the pgid.seed to the callers. It also allows some callers to avoid reaching into the request structures for the struct ceph_object_layout fields. Signed-off-by: Sage Weil Reviewed-by: Alex Elder --- net/ceph/osd_client.c | 11 +++++++---- net/ceph/osdmap.c | 18 +++++------------- 2 files changed, 12 insertions(+), 17 deletions(-) (limited to 'net') diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 1990834e518b..5584f0a08e28 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -913,21 +913,18 @@ EXPORT_SYMBOL(ceph_osdc_set_request_linger); static int __map_request(struct ceph_osd_client *osdc, struct ceph_osd_request *req, int force_resend) { - struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base; struct ceph_pg pgid; int acting[CEPH_PG_MAX_SIZE]; int o = -1, num = 0; int err; dout("map_request %p tid %lld\n", req, req->r_tid); - err = ceph_calc_object_layout(&reqhead->layout, req->r_oid, + err = ceph_calc_object_layout(&pgid, req->r_oid, &req->r_file_layout, osdc->osdmap); if (err) { list_move(&req->r_req_lru_item, &osdc->req_notarget); return err; } - pgid.pool = le32_to_cpu(reqhead->layout.ol_pgid.pool); - pgid.seed = le16_to_cpu(reqhead->layout.ol_pgid.ps); req->r_pgid = pgid; err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); @@ -1000,10 +997,16 @@ static void __send_request(struct ceph_osd_client *osdc, req, req->r_tid, req->r_osd->o_osd, req->r_flags); reqhead = req->r_request->front.iov_base; + reqhead->snapid = cpu_to_le64(req->r_snapid); reqhead->osdmap_epoch = cpu_to_le32(osdc->osdmap->epoch); reqhead->flags |= cpu_to_le32(req->r_flags); /* e.g., RETRY */ reqhead->reassert_version = req->r_reassert_version; + reqhead->layout.ol_pgid.ps = cpu_to_le16(req->r_pgid.seed); + reqhead->layout.ol_pgid.pool = cpu_to_le32(req->r_pgid.pool); + reqhead->layout.ol_pgid.preferred = cpu_to_le16(-1); + reqhead->layout.ol_stripe_unit = 0; + req->r_stamp = jiffies; list_move_tail(&req->r_req_lru_item, &osdc->req_lru); diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c index 911919320d2e..378471644501 100644 --- a/net/ceph/osdmap.c +++ b/net/ceph/osdmap.c @@ -1095,32 +1095,24 @@ EXPORT_SYMBOL(ceph_calc_file_object_mapping); * calculate an object layout (i.e. pgid) from an oid, * file_layout, and osdmap */ -int ceph_calc_object_layout(struct ceph_object_layout *ol, +int ceph_calc_object_layout(struct ceph_pg *pg, const char *oid, struct ceph_file_layout *fl, struct ceph_osdmap *osdmap) { unsigned int num, num_mask; - struct ceph_pg pgid; struct ceph_pg_pool_info *pool; BUG_ON(!osdmap); - - pgid.pool = le32_to_cpu(fl->fl_pg_pool); - pool = __lookup_pg_pool(&osdmap->pg_pools, pgid.pool); + pg->pool = le32_to_cpu(fl->fl_pg_pool); + pool = __lookup_pg_pool(&osdmap->pg_pools, pg->pool); if (!pool) return -EIO; - pgid.seed = ceph_str_hash(pool->object_hash, oid, strlen(oid)); + pg->seed = ceph_str_hash(pool->object_hash, oid, strlen(oid)); num = pool->pg_num; num_mask = pool->pg_num_mask; - dout("calc_object_layout '%s' pgid %lld.%x\n", oid, pgid.pool, - pgid.seed); - - ol->ol_pgid.ps = cpu_to_le16(pgid.seed); - ol->ol_pgid.pool = fl->fl_pg_pool; - ol->ol_pgid.preferred = cpu_to_le16(-1); - ol->ol_stripe_unit = fl->fl_object_stripe_unit; + dout("calc_object_layout '%s' pgid %lld.%x\n", oid, pg->pool, pg->seed); return 0; } EXPORT_SYMBOL(ceph_calc_object_layout); -- cgit v1.2.3