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NFS: Ensure we time out if a delegreturn does not complete

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We can't allow delegreturn to hold up nfs4_evict_inode() forever,
since that can cause the memory shrinkers to block. This patch
therefore ensures that we eventually time out, and complete the
reclaim of the inode.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2019-12-20 10:43:37 -05:00
parent 59b5639490
commit 244fcd2f9a
1 changed files with 2 additions and 1 deletions
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3
fs/nfs/nfs4proc.c
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@ -6259,6 +6259,7 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
/* Fallthrough */
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_STALE_STATEID:
case -ETIMEDOUT:
task->tk_status = 0;
break;
case -NFS4ERR_OLD_STATEID:
@ -6349,7 +6350,7 @@ static int _nfs4_proc_delegreturn(struct inode *inode, const struct cred *cred,
.rpc_client = server->client,
.rpc_message = &msg,
.callback_ops = &nfs4_delegreturn_ops,
.flags = RPC_TASK_ASYNC,
.flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT,
};
int status = 0;