From: Trond Myklebust <trond.myklebust@fys.uio.no>
Subject: Re: Re: broken umount -f
Date: Tue, 14 Jan 2003 20:52:58 +0100
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To: Benjamin LaHaise <bcrl@redhat.com>
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>>>>> " " == Benjamin LaHaise <bcrl@redhat.com> writes:

     > It's up to NFS to make the outstanding IOs against the
     > filesystem return -EIO.

It does that.

void
nfs_umount_begin(struct super_block *sb)
{
        struct nfs_server *server = NFS_SB(sb);
        struct rpc_clnt *rpc;

        /* -EIO all pending I/O */
        if ((rpc = server->client) != NULL)
                rpc_killall_tasks(rpc);
}

What it does not do is hunt down every task that holds an open file,
or has  been started from an NFS directory.

Cheers,
  Trond


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