From a79f194aa4879e9baad118c3f8bb2ca24dbef765 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 27 Feb 2019 15:37:36 -0500 Subject: NFSv4/flexfiles: Abort I/O early if the layout segment was invalidated If a layout segment gets invalidated while a pNFS I/O operation is queued for transmission, then we ideally want to abort immediately. This is particularly the case when there is a large number of I/O related RPCs queued in the RPC layer, and the layout segment gets invalidated due to an ENOSPC error, or an EACCES (because the client was fenced). We may end up forced to spam the MDS with a lot of otherwise unnecessary LAYOUTERRORs after that I/O fails. Signed-off-by: Trond Myklebust --- net/sunrpc/xprt.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'net') diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index 1cf4e379be7b..e096c5a725df 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -1330,6 +1330,13 @@ xprt_request_transmit(struct rpc_rqst *req, struct rpc_task *snd_task) status = -EBADMSG; goto out_dequeue; } + if (task->tk_ops->rpc_call_prepare_transmit) { + task->tk_ops->rpc_call_prepare_transmit(task, + task->tk_calldata); + status = task->tk_status; + if (status < 0) + goto out_dequeue; + } } /* -- cgit v1.2.3-59-g8ed1b