RPC: rpciod waiting on sync task!

[Dima Brodsky <dima@cs.ubc.ca>]

Hi,

I modified the linux NFS client, kernel 2.4.5 and 2.4.6-pre7, to send
an extra SETATTR, with special values, within nfs_open and nfs_release
so that I would be able to track file open and close.  For the server I
am using a slightly modified linux user level nfs server.

What I noticed is that after this change I get:

RPC: rpciod waiting on sync task!

coming from the kernel under heavy read load, especially with
larger chunks of data 8k, 16, and 64k.

The code introduced into nfs_open and nfs_release is:

        memset( &fattr, 0, sizeof(struct nfs_fattr) );
        memset( &attr, 0, sizeof(struct iattr) );

        attr.ia_valid = ATTR_MODE | ATTR_UID | ATTR_GID | ATTR_SIZE;
        attr.ia_mode = inode->i_mode;
        attr.ia_uid = -10;
        attr.ia_gid = -10;
        attr.ia_size = -10;
        attr.ia_atime = -1;
        attr.ia_mtime = -1;
        attr.ia_ctime = -1;
        attr.ia_attr_flags = -1;

        error = NFS_PROTO(inode)->setattr(inode, &fattr, &attr);
        if ( error ) {
                printk( "nfs_network_openclose: error=%d\n", error );
        }

Does anybody see any problems with this code?  The unmodified nfs client
works fine with the unmodified nfs server.

Thanks
ttyl
Dima

-- 
Dima Brodsky                                   dima@cs.ubc.ca
                                               http://www.cs.ubc.ca/~dima
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