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ceph: wake up 'safe' waiters when unregistering request 

We also need to wake up 'safe' waiters if error occurs or request
aborted. Otherwise sync(2)/fsync(2) may hang forever.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: Sage Weil <sage@inktank.com>
This commit is contained in:
Yan, Zheng 2013-10-31 09:10:47 +08:00 committed by Sage Weil
parent eb1b8af33c
commit fc55d2c944
1 changed files with 2 additions and 1 deletions
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3
fs/ceph/mds_client.c
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@ -644,6 +644,8 @@ static void __unregister_request(struct ceph_mds_client *mdsc,
req->r_unsafe_dir = NULL;
}
complete_all(&req->r_safe_completion);
ceph_mdsc_put_request(req);
}
@ -2186,7 +2188,6 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
if (head->safe) {
req->r_got_safe = true;
__unregister_request(mdsc, req);
complete_all(&req->r_safe_completion);
if (req->r_got_unsafe) {
/*