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authorSage Weil <sage@newdream.net>2010-07-05 12:15:14 -0700
committerSage Weil <sage@newdream.net>2010-07-05 12:16:23 -0700
commited98adad3d87594c55347824e85137d1829c9e70 (patch)
treeb22414183f7eff1ac1ba606a3ebf2357f0876b4c /fs/ceph
parent153a10939ea6e42e9c0115b0645060d0d7bb4697 (diff)
downloadop-kernel-dev-ed98adad3d87594c55347824e85137d1829c9e70.zip
op-kernel-dev-ed98adad3d87594c55347824e85137d1829c9e70.tar.gz
ceph: fix message revocation
A message can be on a queue (pending or sent), or out_msg (sending), or both. We were assuming that if it's not on a queue it couldn't be out_msg, but that was false in the case of lossy connections like the OSD. Fix ceph_con_revoke() to treat these cases independently. Also, fix the out_kvec_is_message check to only trigger if we are currently sending _this_ message. This fixes a GPF in tcp_sendpage, triggered by OSD restarts. Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph')
-rw-r--r--fs/ceph/messenger.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/fs/ceph/messenger.c b/fs/ceph/messenger.c
index 9ad43a3..9692d08 100644
--- a/fs/ceph/messenger.c
+++ b/fs/ceph/messenger.c
@@ -2015,20 +2015,20 @@ void ceph_con_revoke(struct ceph_connection *con, struct ceph_msg *msg)
{
mutex_lock(&con->mutex);
if (!list_empty(&msg->list_head)) {
- dout("con_revoke %p msg %p\n", con, msg);
+ dout("con_revoke %p msg %p - was on queue\n", con, msg);
list_del_init(&msg->list_head);
ceph_msg_put(msg);
msg->hdr.seq = 0;
- if (con->out_msg == msg) {
- ceph_msg_put(con->out_msg);
- con->out_msg = NULL;
- }
+ }
+ if (con->out_msg == msg) {
+ dout("con_revoke %p msg %p - was sending\n", con, msg);
+ con->out_msg = NULL;
if (con->out_kvec_is_msg) {
con->out_skip = con->out_kvec_bytes;
con->out_kvec_is_msg = false;
}
- } else {
- dout("con_revoke %p msg %p - not queued (sent?)\n", con, msg);
+ ceph_msg_put(msg);
+ msg->hdr.seq = 0;
}
mutex_unlock(&con->mutex);
}
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