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Commit cc80fe0e authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'nfsd-4.5' of git://linux-nfs.org/~bfields/linux 

Pull nfsd updates from Bruce Fields:
 "Smaller bugfixes and cleanup, including a fix for a failures of
  kerberized NFSv4.1 mounts, and Scott Mayhew's work addressing ACK
  storms that can affect some high-availability NFS setups"

* tag 'nfsd-4.5' of git://linux-nfs.org/~bfields/linux:
  nfsd: add new io class tracepoint
  nfsd: give up on CB_LAYOUTRECALLs after two lease periods
  nfsd: Fix nfsd leaks sunrpc module references
  lockd: constify nlmsvc_binding structure
  lockd: use to_delayed_work
  nfsd: use to_delayed_work
  Revert "svcrdma: Do not send XDR roundup bytes for a write chunk"
  lockd: Register callbacks on the inetaddr_chain and inet6addr_chain
  nfsd: Register callbacks on the inetaddr_chain and inet6addr_chain
  sunrpc: Add a function to close temporary transports immediately
  nfsd: don't base cl_cb_status on stale information
  nfsd4: fix gss-proxy 4.1 mounts for some AD principals
  nfsd: fix unlikely NULL deref in mach_creds_match
  nfsd: minor consolidation of mach_cred handling code
  nfsd: helper for dup of possibly NULL string
  svcrpc: move some initialization to common code
  nfsd: fix a warning message
  nfsd: constify nfsd4_callback_ops structure
  nfsd: recover: constify nfsd4_client_tracking_ops structures
  svcrdma: Do not send XDR roundup bytes for a write chunk
parents c7b6c5fe 6e8b50d1

fs/lockd/svc.c

+74 −5
Original line number Diff line number Diff line
@@ -25,13 +25,17 @@ 
#include <linux/mutex.h>

#include <linux/kthread.h>

#include <linux/freezer.h>

#include <linux/inetdevice.h>



#include <linux/sunrpc/types.h>

#include <linux/sunrpc/stats.h>

#include <linux/sunrpc/clnt.h>

#include <linux/sunrpc/svc.h>

#include <linux/sunrpc/svcsock.h>

#include <linux/sunrpc/svc_xprt.h>

#include <net/ip.h>

#include <net/addrconf.h>

#include <net/ipv6.h>

#include <linux/lockd/lockd.h>

#include <linux/nfs.h>
@@ -44,7 +48,7 @@ 


static struct svc_program	nlmsvc_program;



struct nlmsvc_binding *		nlmsvc_ops;

const struct nlmsvc_binding	*nlmsvc_ops;

EXPORT_SYMBOL_GPL(nlmsvc_ops);



static DEFINE_MUTEX(nlmsvc_mutex);
@@ -90,8 +94,7 @@ static unsigned long get_lockd_grace_period(void) 


static void grace_ender(struct work_struct *grace)

{

	struct delayed_work *dwork = container_of(grace, struct delayed_work,

						  work);

	struct delayed_work *dwork = to_delayed_work(grace);

	struct lockd_net *ln = container_of(dwork, struct lockd_net,

					    grace_period_end);
@@ -279,6 +282,68 @@ static void lockd_down_net(struct svc_serv *serv, struct net *net) 
	}

}



static int lockd_inetaddr_event(struct notifier_block *this,

	unsigned long event, void *ptr)

{

	struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;

	struct sockaddr_in sin;



	if (event != NETDEV_DOWN)

		goto out;



	if (nlmsvc_rqst) {

		dprintk("lockd_inetaddr_event: removed %pI4\n",

			&ifa->ifa_local);

		sin.sin_family = AF_INET;

		sin.sin_addr.s_addr = ifa->ifa_local;

		svc_age_temp_xprts_now(nlmsvc_rqst->rq_server,

			(struct sockaddr *)&sin);

	}



out:

	return NOTIFY_DONE;

}



static struct notifier_block lockd_inetaddr_notifier = {

	.notifier_call = lockd_inetaddr_event,

};



#if IS_ENABLED(CONFIG_IPV6)

static int lockd_inet6addr_event(struct notifier_block *this,

	unsigned long event, void *ptr)

{

	struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;

	struct sockaddr_in6 sin6;



	if (event != NETDEV_DOWN)

		goto out;



	if (nlmsvc_rqst) {

		dprintk("lockd_inet6addr_event: removed %pI6\n", &ifa->addr);

		sin6.sin6_family = AF_INET6;

		sin6.sin6_addr = ifa->addr;

		svc_age_temp_xprts_now(nlmsvc_rqst->rq_server,

			(struct sockaddr *)&sin6);

	}



out:

	return NOTIFY_DONE;

}



static struct notifier_block lockd_inet6addr_notifier = {

	.notifier_call = lockd_inet6addr_event,

};

#endif



static void lockd_svc_exit_thread(void)

{

	unregister_inetaddr_notifier(&lockd_inetaddr_notifier);

#if IS_ENABLED(CONFIG_IPV6)

	unregister_inet6addr_notifier(&lockd_inet6addr_notifier);

#endif

	svc_exit_thread(nlmsvc_rqst);

}



static int lockd_start_svc(struct svc_serv *serv)

{

	int error;
@@ -315,7 +380,7 @@ static int lockd_start_svc(struct svc_serv *serv) 
	return 0;



out_task:

	svc_exit_thread(nlmsvc_rqst);

	lockd_svc_exit_thread();

	nlmsvc_task = NULL;

out_rqst:

	nlmsvc_rqst = NULL;
@@ -360,6 +425,10 @@ static struct svc_serv *lockd_create_svc(void) 
		printk(KERN_WARNING "lockd_up: create service failed\n");

		return ERR_PTR(-ENOMEM);

	}

	register_inetaddr_notifier(&lockd_inetaddr_notifier);

#if IS_ENABLED(CONFIG_IPV6)

	register_inet6addr_notifier(&lockd_inet6addr_notifier);

#endif

	dprintk("lockd_up: service created\n");

	return serv;

}
@@ -428,7 +497,7 @@ lockd_down(struct net *net) 
	}

	kthread_stop(nlmsvc_task);

	dprintk("lockd_down: service stopped\n");

	svc_exit_thread(nlmsvc_rqst);

	lockd_svc_exit_thread();

	dprintk("lockd_down: service destroyed\n");

	nlmsvc_task = NULL;

	nlmsvc_rqst = NULL;

fs/nfsd/lockd.c

+1 −1
Original line number Diff line number Diff line
@@ -58,7 +58,7 @@ nlm_fclose(struct file *filp) 
	fput(filp);

}



static struct nlmsvc_binding	nfsd_nlm_ops = {

static const struct nlmsvc_binding nfsd_nlm_ops = {

	.fopen		= nlm_fopen,		/* open file for locking */

	.fclose		= nlm_fclose,		/* close file */

};

fs/nfsd/netns.h

+1 −1
Original line number Diff line number Diff line
@@ -92,7 +92,7 @@ struct nfsd_net { 


	struct file *rec_file;

	bool in_grace;

	struct nfsd4_client_tracking_ops *client_tracking_ops;

	const struct nfsd4_client_tracking_ops *client_tracking_ops;



	time_t nfsd4_lease;

	time_t nfsd4_grace;

fs/nfsd/nfs4callback.c

+5 −1
Original line number Diff line number Diff line
@@ -792,12 +792,16 @@ static void warn_no_callback_path(struct nfs4_client *clp, int reason) 


static void nfsd4_mark_cb_down(struct nfs4_client *clp, int reason)

{

	if (test_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_flags))

		return;

	clp->cl_cb_state = NFSD4_CB_DOWN;

	warn_no_callback_path(clp, reason);

}



static void nfsd4_mark_cb_fault(struct nfs4_client *clp, int reason)

{

	if (test_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_flags))

		return;

	clp->cl_cb_state = NFSD4_CB_FAULT;

	warn_no_callback_path(clp, reason);

}
@@ -1143,7 +1147,7 @@ nfsd4_run_cb_work(struct work_struct *work) 
}



void nfsd4_init_cb(struct nfsd4_callback *cb, struct nfs4_client *clp,

		struct nfsd4_callback_ops *ops, enum nfsd4_cb_op op)

		const struct nfsd4_callback_ops *ops, enum nfsd4_cb_op op)

{

	cb->cb_clp = clp;

	cb->cb_msg.rpc_proc = &nfs4_cb_procedures[op];

fs/nfsd/nfs4layouts.c

+27 −12
Original line number Diff line number Diff line
@@ -22,7 +22,7 @@ struct nfs4_layout { 
static struct kmem_cache *nfs4_layout_cache;

static struct kmem_cache *nfs4_layout_stateid_cache;



static struct nfsd4_callback_ops nfsd4_cb_layout_ops;

static const struct nfsd4_callback_ops nfsd4_cb_layout_ops;

static const struct lock_manager_operations nfsd4_layouts_lm_ops;



const struct nfsd4_layout_ops *nfsd4_layout_ops[LAYOUT_TYPE_MAX] =  {
@@ -624,24 +624,39 @@ nfsd4_cb_layout_done(struct nfsd4_callback *cb, struct rpc_task *task) 
{

	struct nfs4_layout_stateid *ls =

		container_of(cb, struct nfs4_layout_stateid, ls_recall);

	struct nfsd_net *nn;

	ktime_t now, cutoff;

	LIST_HEAD(reaplist);





	switch (task->tk_status) {

	case 0:

	case -NFS4ERR_DELAY:

		/*

		 * Anything left? If not, then call it done. Note that we don't

		 * take the spinlock since this is an optimization and nothing

		 * should get added until the cb counter goes to zero.

		 */

		if (list_empty(&ls->ls_layouts))

			return 1;



		/* Poll the client until it's done with the layout */

		now = ktime_get();

		nn = net_generic(ls->ls_stid.sc_client->net, nfsd_net_id);



		/* Client gets 2 lease periods to return it */

		cutoff = ktime_add_ns(task->tk_start,

					 nn->nfsd4_lease * NSEC_PER_SEC * 2);



		if (ktime_before(now, cutoff)) {

			rpc_delay(task, HZ/100); /* 10 mili-seconds */

			return 0;

		}

		/* Fallthrough */

	case -NFS4ERR_NOMATCHING_LAYOUT:

		trace_layout_recall_done(&ls->ls_stid.sc_stateid);

		task->tk_status = 0;

		return 1;

	case -NFS4ERR_DELAY:

		/* Poll the client until it's done with the layout */

		/* FIXME: cap number of retries.

		 * The pnfs standard states that we need to only expire

		 * the client after at-least "lease time" .eg lease-time * 2

		 * when failing to communicate a recall

		 */

		rpc_delay(task, HZ/100); /* 10 mili-seconds */

		return 0;

	default:

		/*

		 * Unknown error or non-responding client, we'll need to fence.
@@ -665,7 +680,7 @@ nfsd4_cb_layout_release(struct nfsd4_callback *cb) 
	nfs4_put_stid(&ls->ls_stid);

}



static struct nfsd4_callback_ops nfsd4_cb_layout_ops = {

static const struct nfsd4_callback_ops nfsd4_cb_layout_ops = {

	.prepare	= nfsd4_cb_layout_prepare,

	.done		= nfsd4_cb_layout_done,

	.release	= nfsd4_cb_layout_release,