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lockd: Do not start the lockd thread before we've set nlmsvc_rqst->rq_task

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This fixes an Oopsable race when starting lockd.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Reviewed-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Trond Myklebust 2014-09-02 13:58:57 -04:00 committed by J. Bruce Fields
parent ccad7dad86
commit d4e8990299
1 changed files with 2 additions and 1 deletions
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3
fs/lockd/svc.c
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@ -306,7 +306,7 @@ static int lockd_start_svc(struct svc_serv *serv)
svc_sock_update_bufs(serv);
serv->sv_maxconn = nlm_max_connections;
nlmsvc_task = kthread_run(lockd, nlmsvc_rqst, "%s", serv->sv_name);
nlmsvc_task = kthread_create(lockd, nlmsvc_rqst, "%s", serv->sv_name);
if (IS_ERR(nlmsvc_task)) {
error = PTR_ERR(nlmsvc_task);
printk(KERN_WARNING
@ -314,6 +314,7 @@ static int lockd_start_svc(struct svc_serv *serv)
goto out_task;
}
nlmsvc_rqst->rq_task = nlmsvc_task;
wake_up_process(nlmsvc_task);
dprintk("lockd_up: service started\n");
return 0;