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| author | Sage Weil <sage@newdream.net> | 2011-04-06 09:09:16 -0700 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2011-04-06 09:09:16 -0700 |
| commit | 77f38e0eeac290827f41fd2215ab82546b8f73b8 (patch) | |
| tree | f3fe7b7989188f39c7618848ac30754c41c6eee0 /net | |
| parent | 4b2a58abd1e17c0ee53c8dded879e015917cca67 (diff) | |
| download | kernel-common-77f38e0eeac290827f41fd2215ab82546b8f73b8.tar.gz kernel-common-77f38e0eeac290827f41fd2215ab82546b8f73b8.tar.bz2 kernel-common-77f38e0eeac290827f41fd2215ab82546b8f73b8.zip | |
libceph: fix linger request requeueing
Fix the request transition from linger -> normal request. The key is to
preserve r_osd and requeue on the same OSD. Reregister as a normal request,
add the request to the proper queues, then unregister the linger. Fix the
unregister helper to avoid clearing r_osd (and also simplify the parallel
check in __unregister_request()).
Reported-by: Henry Chang <henry.cy.chang@gmail.com>
Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ceph/osd_client.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 3b91d651fe08..9204de484c2e 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -579,9 +579,15 @@ static void __kick_osd_requests(struct ceph_osd_client *osdc, list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, r_linger_osd) { - __unregister_linger_request(osdc, req); + /* + * reregister request prior to unregistering linger so + * that r_osd is preserved. + */ + BUG_ON(!list_empty(&req->r_req_lru_item)); __register_request(osdc, req); - list_move(&req->r_req_lru_item, &osdc->req_unsent); + list_add(&req->r_req_lru_item, &osdc->req_unsent); + list_add(&req->r_osd_item, &req->r_osd->o_requests); + __unregister_linger_request(osdc, req); dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, osd->o_osd); } @@ -798,7 +804,7 @@ static void __register_request(struct ceph_osd_client *osdc, req->r_request->hdr.tid = cpu_to_le64(req->r_tid); INIT_LIST_HEAD(&req->r_req_lru_item); - dout("register_request %p tid %lld\n", req, req->r_tid); + dout("__register_request %p tid %lld\n", req, req->r_tid); __insert_request(osdc, req); ceph_osdc_get_request(req); osdc->num_requests++; |