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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2017-04-26 11:55:27 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2017-04-27 18:00:16 -0400 |
| commit | ed6473ddc704a2005b9900ca08e236ebb2d8540a (patch) | |
| tree | 2d4a3fa182fcd7cef1fac00517d797b0ac6fa099 /fs/nfs/callback.c | |
| parent | 9e0d87680d689f1758185851c3da6eafb16e71e1 (diff) | |
| download | linux-0-day-ed6473ddc704a2005b9900ca08e236ebb2d8540a.tar.gz linux-0-day-ed6473ddc704a2005b9900ca08e236ebb2d8540a.tar.xz | |
NFSv4: Fix callback server shutdown
We want to use kthread_stop() in order to ensure the threads are
shut down before we tear down the nfs_callback_info in nfs_callback_down.
Tested-and-reviewed-by: Kinglong Mee <kinglongmee@gmail.com>
Reported-by: Kinglong Mee <kinglongmee@gmail.com>
Fixes: bb6aeba736ba9 ("NFSv4.x: Switch to using svc_set_num_threads()...")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfs/callback.c')
| -rw-r--r-- | fs/nfs/callback.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index c5e27ebd8da8b..73a1f928226c0 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -76,7 +76,10 @@ nfs4_callback_svc(void *vrqstp) set_freezable(); - while (!kthread_should_stop()) { + while (!kthread_freezable_should_stop(NULL)) { + + if (signal_pending(current)) + flush_signals(current); /* * Listen for a request on the socket */ @@ -85,6 +88,8 @@ nfs4_callback_svc(void *vrqstp) continue; svc_process(rqstp); } + svc_exit_thread(rqstp); + module_put_and_exit(0); return 0; } @@ -103,9 +108,10 @@ nfs41_callback_svc(void *vrqstp) set_freezable(); - while (!kthread_should_stop()) { - if (try_to_freeze()) - continue; + while (!kthread_freezable_should_stop(NULL)) { + + if (signal_pending(current)) + flush_signals(current); prepare_to_wait(&serv->sv_cb_waitq, &wq, TASK_INTERRUPTIBLE); spin_lock_bh(&serv->sv_cb_lock); @@ -121,11 +127,13 @@ nfs41_callback_svc(void *vrqstp) error); } else { spin_unlock_bh(&serv->sv_cb_lock); - schedule(); + if (!kthread_should_stop()) + schedule(); finish_wait(&serv->sv_cb_waitq, &wq); } - flush_signals(current); } + svc_exit_thread(rqstp); + module_put_and_exit(0); return 0; } @@ -221,14 +229,14 @@ err_bind: static struct svc_serv_ops nfs40_cb_sv_ops = { .svo_function = nfs4_callback_svc, .svo_enqueue_xprt = svc_xprt_do_enqueue, - .svo_setup = svc_set_num_threads, + .svo_setup = svc_set_num_threads_sync, .svo_module = THIS_MODULE, }; #if defined(CONFIG_NFS_V4_1) static struct svc_serv_ops nfs41_cb_sv_ops = { .svo_function = nfs41_callback_svc, .svo_enqueue_xprt = svc_xprt_do_enqueue, - .svo_setup = svc_set_num_threads, + .svo_setup = svc_set_num_threads_sync, .svo_module = THIS_MODULE, }; |