path: root/net/sunrpc
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authorTrond Myklebust <trond.myklebust@hammerspace.com>2019-02-27 15:37:36 -0500
committerTrond Myklebust <trond.myklebust@hammerspace.com>2019-03-01 16:20:16 -0500
commita79f194aa4879e9baad118c3f8bb2ca24dbef765 (patch)
tree202028379bf0ff4ac68952614d76ab434cf9da50 /net/sunrpc
parentNFSv4/pnfs: Fix barriers in nfs4_mark_deviceid_unavailable() (diff)
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 <trond.myklebust@hammerspace.com>
Diffstat (limited to 'net/sunrpc')
1 files changed, 7 insertions, 0 deletions
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;
+ }