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SUNRPC: Signalled ASYNC tasks need to exit 

[ Upstream commit ce99aa62e1 ]

Ensure that signalled ASYNC rpc_tasks exit immediately instead of
spinning until a timeout (or forever).

To avoid checking for the signal flag on every scheduler iteration,
the check is instead introduced in the client's finite state
machine.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Fixes: ae67bd3821 ("SUNRPC: Fix up task signalling")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chuck Lever 2020-05-09 14:07:13 -04:00 committed by Greg Kroah-Hartman
parent d1538d8d63
commit 6259b1c1bc
1 changed files with 5 additions and 0 deletions
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5
net/sunrpc/clnt.c
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@ -2422,6 +2422,11 @@ rpc_check_timeout(struct rpc_task *task)
{
struct rpc_clnt *clnt = task->tk_client;
if (RPC_SIGNALLED(task)) {
rpc_call_rpcerror(task, -ERESTARTSYS);
return;
}
if (xprt_adjust_timeout(task->tk_rqstp) == 0)
return;