From f049911b5b98feceb949430f33fb5d2c9c55833c Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Sun, 9 Feb 2025 07:31:25 -0500 Subject: [PATCH] nfsd: only check RPC_SIGNALLED() when restarting rpc_task nfsd4_cb_sequence_done() currently checks RPC_SIGNALLED() when processing the compound and releasing the slot. If RPC_SIGNALLED() returns true, then that means that the client is going to be torn down. Don't check RPC_SIGNALLED() after processing a successful reply. Check it only before restarting the rpc_task. If it returns true, then requeue the callback instead of restarting the task. Also, handle rpc_restart_call() and rpc_restart_call_prepare() failures correctly, by requeueing the callback. Signed-off-by: Jeff Layton Signed-off-by: Chuck Lever --- fs/nfsd/nfs4callback.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index 640d788052fd..54f33b81d20f 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -1379,8 +1379,8 @@ static bool nfsd4_cb_sequence_done(struct rpc_task *task, struct nfsd4_callback goto requeue; case -NFS4ERR_DELAY: cb->cb_seq_status = 1; - if (!rpc_restart_call(task)) - goto out; + if (RPC_SIGNALLED(task) || !rpc_restart_call(task)) + goto requeue; rpc_delay(task, 2 * HZ); return false; case -NFS4ERR_BADSLOT: @@ -1396,14 +1396,16 @@ static bool nfsd4_cb_sequence_done(struct rpc_task *task, struct nfsd4_callback } trace_nfsd_cb_free_slot(task, cb); nfsd41_cb_release_slot(cb); - - if (RPC_SIGNALLED(task)) - goto requeue; -out: return ret; retry_nowait: - rpc_restart_call_prepare(task); - goto out; + /* + * RPC_SIGNALLED() means that the rpc_client is being torn down and + * (possibly) recreated. Requeue the call in that case. + */ + if (!RPC_SIGNALLED(task)) { + if (rpc_restart_call_prepare(task)) + return false; + } requeue: nfsd41_cb_release_slot(cb); nfsd4_requeue_cb(task, cb); -- 2.25.1