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NFS: Fake up 'wcc' attributes to prevent cache invalidation after write

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NFSv2 and v4 don't offer weak cache consistency attributes on WRITE calls.
In NFSv3, returning wcc data is optional. In all cases, we want to prevent
the client from invalidating our cached data whenever ->write_done()
attempts to update the inode attributes.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2007-09-30 15:21:24 -04:00
parent b64e8a5ef7
commit 70ca88521f
6 changed files with 40 additions and 4 deletions
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2
fs/nfs/proc.c
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@ -579,7 +579,7 @@ static void nfs_proc_read_setup(struct nfs_read_data *data)
static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data)
{
if (task->tk_status >= 0)
nfs_post_op_update_inode(data->inode, data->res.fattr);
nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr);
return 0;
}