Commit 29fba38b authored by Benny Halevy's avatar Benny Halevy
Browse files

nfs41: lease renewal 



Send a NFSv4.1 SEQUENCE op rather than RENEW that was deprecated in
minorversion 1.
Use the nfs_client minorversion to select reboot_recover/
network_partition_recovery/state_renewal ops.

Note: we use reclaimer to create the nfs41 session before there are any
cl_superblocks for the nfs_client.

Signed-off-by: default avatarBenny Halevy <bhalevy@panasas.com>
[nfs41: check for session not minorversion]
Signed-off-by: default avatarAndy Adamson <andros@netapp.com>
Signed-off-by: default avatarBenny Halevy <bhalevy@panasas.com>
[revamped patch for new nfs4_state_manager design]
Signed-off-by: default avatarBenny Halevy <bhalevy@panasas.com>
[nfs41: obliterate nfs4_state_recovery_ops.renew_lease method]
    moved to nfs4_state_maintenance_ops
[also undid per-minorversion nfs4_state_recovery_ops here]
Signed-off-by: default avatarBenny Halevy <bhalevy@panasas.com>
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent b069d94a

fs/nfs/nfs4_fs.h

+6 −0
Original line number Diff line number Diff line
@@ -180,6 +180,10 @@ struct nfs4_state_recovery_ops { 
	int (*recover_lock)(struct nfs4_state *, struct file_lock *);

};



struct nfs4_state_maintenance_ops {

	int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *);

};



extern const struct dentry_operations nfs4_dentry_operations;

extern const struct inode_operations nfs4_dir_inode_operations;
@@ -220,6 +224,8 @@ static inline int nfs4_setup_sequence(struct nfs_client *clp, 
}

#endif /* CONFIG_NFS_V4_1 */



extern struct nfs4_state_maintenance_ops *nfs4_state_renewal_ops[];



extern const u32 nfs4_fattr_bitmap[2];

extern const u32 nfs4_statfs_bitmap[2];

extern const u32 nfs4_pathconf_bitmap[2];

fs/nfs/nfs4proc.c

+24 −0
Original line number Diff line number Diff line
@@ -3016,6 +3016,9 @@ static void nfs4_renew_done(struct rpc_task *task, void *data) 
	if (time_before(clp->cl_last_renewal,timestamp))

		clp->cl_last_renewal = timestamp;

	spin_unlock(&clp->cl_lock);

	dprintk("%s calling put_rpccred on rpc_cred %p\n", __func__,

				task->tk_msg.rpc_cred);

	put_rpccred(task->tk_msg.rpc_cred);

}



static const struct rpc_call_ops nfs4_renew_ops = {
@@ -4790,6 +4793,27 @@ struct nfs4_state_recovery_ops nfs4_nograce_recovery_ops = { 
	.recover_lock	= nfs4_lock_expired,

};



struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = {

	.sched_state_renewal = nfs4_proc_async_renew,

};



#if defined(CONFIG_NFS_V4_1)

struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {

	.sched_state_renewal = nfs41_proc_async_sequence,

};

#endif



/*

 * Per minor version reboot and network partition recovery ops

 */



struct nfs4_state_maintenance_ops *nfs4_state_renewal_ops[] = {

	&nfs40_state_renewal_ops,

#if defined(CONFIG_NFS_V4_1)

	&nfs41_state_renewal_ops,

#endif

};



static const struct inode_operations nfs4_file_inode_operations = {

	.permission	= nfs_permission,

	.getattr	= nfs_getattr,

fs/nfs/nfs4renewd.c

+3 −1
Original line number Diff line number Diff line
@@ -59,12 +59,14 @@ 
void

nfs4_renew_state(struct work_struct *work)

{

	struct nfs4_state_maintenance_ops *ops;

	struct nfs_client *clp =

		container_of(work, struct nfs_client, cl_renewd.work);

	struct rpc_cred *cred;

	long lease, timeout;

	unsigned long last, now;



	ops = nfs4_state_renewal_ops[clp->cl_minorversion];

	dprintk("%s: start\n", __func__);

	/* Are there any active superblocks? */

	if (list_empty(&clp->cl_superblocks))
@@ -86,7 +88,7 @@ nfs4_renew_state(struct work_struct *work) 
			nfs_expire_all_delegations(clp);

		} else {

			/* Queue an asynchronous RENEW. */

			nfs4_proc_async_renew(clp, cred);

			ops->sched_state_renewal(clp, cred);

			put_rpccred(cred);

		}

		timeout = (2 * lease) / 3;

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