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NFS: Remove unused FLUSH_SYNC support in nfs_initiate_pgio()

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If the FLUSH_SYNC flag is set, nfs_initiate_pgio() will currently
wait for completion, and then return the status of the I/O operation.
What we actually want to report in nfs_pageio_doio() is whether or
not the RPC call was launched successfully, whereas actual I/O
status is intended handled in the reply callbacks.

Since FLUSH_SYNC is never set by any of the callers anyway, let's
just remove that code altogether.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2020-03-28 11:39:29 -04:00
parent cbd7be43c4
commit 1de3af9883
1 changed files with 3 additions and 12 deletions
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15
fs/nfs/pagelist.c
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@ -629,7 +629,6 @@ int nfs_initiate_pgio(struct rpc_clnt *clnt, struct nfs_pgio_header *hdr,
.workqueue = nfsiod_workqueue,
.flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF | flags,
};
int ret = 0;
hdr->rw_ops->rw_initiate(hdr, &msg, rpc_ops, &task_setup_data, how);
@ -641,18 +640,10 @@ int nfs_initiate_pgio(struct rpc_clnt *clnt, struct nfs_pgio_header *hdr,
(unsigned long long)hdr->args.offset);
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task)) {
ret = PTR_ERR(task);
goto out;
}
if (how & FLUSH_SYNC) {
ret = rpc_wait_for_completion_task(task);
if (ret == 0)
ret = task->tk_status;
}
if (IS_ERR(task))
return PTR_ERR(task);
rpc_put_task(task);
out:
return ret;
return 0;
}
EXPORT_SYMBOL_GPL(nfs_initiate_pgio);