From 0ba6478df7c6bef0f4b2625554545f941f89fb97 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Thu, 8 Oct 2009 16:57:16 -0700 Subject: [PATCH] ceph: revoke osd request message on request completion If an osd has failed or returned and a request has been sent twice, it's possible to get a reply and unregister the request while the request message is queued for delivery. Since the message references the caller's page vector, we need to revoke it before completing. Signed-off-by: Sage Weil --- fs/ceph/osd_client.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/fs/ceph/osd_client.c b/fs/ceph/osd_client.c index d14019dd6868..0aea8afaa072 100644 --- a/fs/ceph/osd_client.c +++ b/fs/ceph/osd_client.c @@ -469,10 +469,15 @@ static void __unregister_request(struct ceph_osd_client *osdc, rb_erase(&req->r_node, &osdc->requests); osdc->num_requests--; - list_del_init(&req->r_osd_item); - if (list_empty(&req->r_osd->o_requests)) - remove_osd(osdc, req->r_osd); - req->r_osd = NULL; + if (req->r_osd) { + /* make sure the original request isn't in flight. */ + ceph_con_revoke(&req->r_osd->o_con, req->r_request); + + list_del_init(&req->r_osd_item); + if (list_empty(&req->r_osd->o_requests)) + remove_osd(osdc, req->r_osd); + req->r_osd = NULL; + } ceph_osdc_put_request(req); -- 2.30.2