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NFS: Move cl_delegations to the nfs_server struct

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Delegations are per-inode, not per-nfs_client.  When a server file
system is migrated, delegations on the client must be moved from the
source to the destination nfs_server.  Make it easier to manage a
mount point's delegation list across a migration event by moving the
list to the nfs_server struct.

Clean up: I added documenting comments to public functions I changed
in this patch.  For consistency I added comments to all the other
public functions in fs/nfs/delegation.c.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever
2010-12-24 01:33:04 +00:00
committed by Trond Myklebust
parent dda4b22562
commit d3978bb325
5 changed files with 251 additions and 93 deletions
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2
fs/nfs/nfs4renewd.c
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@ -80,7 +80,7 @@ nfs4_renew_state(struct work_struct *work)
cred = ops->get_state_renewal_cred_locked(clp);
spin_unlock(&clp->cl_lock);
if (cred == NULL) {
if (list_empty(&clp->cl_delegations)) {
if (!nfs_delegations_present(clp)) {
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
goto out;
}