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Commit f252bc68 authored by Stanislav Kinsbursky's avatar Stanislav Kinsbursky Committed by J. Bruce Fields
Browse files

nfsd: call state init and shutdown twice 



Split NFSv4 state init and shutdown into two different calls: per-net one and
generic one.
Per-net cwinit/shutdown pair have to be called for any namespace, generic pair
- only once on NSFd kthreads start and shutdown respectively.

Refresh of diff-nfsd-call-state-init-twice

Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent d85ed443

fs/nfsd/nfs4state.c

+12 −18
Original line number Diff line number Diff line
@@ -4861,12 +4861,22 @@ nfs4_state_destroy_net(struct net *net) 
	put_net(net);

}



static int

int

nfs4_state_start_net(struct net *net)

{

	struct nfsd_net *nn = net_generic(net, nfsd_net_id);

	int ret;



	/*

	 * FIXME: For now, we hang most of the pernet global stuff off of

	 * init_net until nfsd is fully containerized. Eventually, we'll

	 * need to pass a net pointer into this function, take a reference

	 * to that instead and then do most of the rest of this on a per-net

	 * basis.

	 */

	if (net != &init_net)

		return -EINVAL;



	ret = nfs4_state_create_net(net);

	if (ret)

		return ret;
@@ -4901,21 +4911,8 @@ nfs4_state_start(void) 


	set_max_delegations();



	/*

	 * FIXME: For now, we hang most of the pernet global stuff off of

	 * init_net until nfsd is fully containerized. Eventually, we'll

	 * need to pass a net pointer into this function, take a reference

	 * to that instead and then do most of the rest of this on a per-net

	 * basis.

	 */

	ret = nfs4_state_start_net(&init_net);

	if (ret)

		goto out_free_callback;



	return 0;



out_free_callback:

	nfsd4_destroy_callback_queue();

out_free_laundry:

	destroy_workqueue(laundry_wq);

out_recovery:
@@ -4923,7 +4920,7 @@ nfs4_state_start(void) 
}



/* should be called with the state lock held */

static void

void

nfs4_state_shutdown_net(struct net *net)

{

	struct nfs4_delegation *dp = NULL;
@@ -4954,9 +4951,6 @@ nfs4_state_shutdown_net(struct net *net) 
void

nfs4_state_shutdown(void)

{

	struct net *net = &init_net;



	nfs4_state_shutdown_net(net);

	destroy_workqueue(laundry_wq);

	nfsd4_destroy_callback_queue();

}

fs/nfsd/nfsd.h

+4 −0
Original line number Diff line number Diff line
@@ -121,7 +121,9 @@ void nfs4_state_init(void); 
int nfsd4_init_slabs(void);

void nfsd4_free_slabs(void);

int nfs4_state_start(void);

int nfs4_state_start_net(struct net *net);

void nfs4_state_shutdown(void);

void nfs4_state_shutdown_net(struct net *net);

void nfs4_reset_lease(time_t leasetime);

int nfs4_reset_recoverydir(char *recdir);

char * nfs4_recoverydir(void);
@@ -130,7 +132,9 @@ static inline void nfs4_state_init(void) { } 
static inline int nfsd4_init_slabs(void) { return 0; }

static inline void nfsd4_free_slabs(void) { }

static inline int nfs4_state_start(void) { return 0; }

static inline int nfs4_state_start_net(struct net *net) { return 0; }

static inline void nfs4_state_shutdown(void) { }

static inline void nfs4_state_shutdown_net(struct net *net) { }

static inline void nfs4_reset_lease(time_t leasetime) { }

static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }

static inline char * nfs4_recoverydir(void) {return NULL; }

fs/nfsd/nfssvc.c

+13 −2
Original line number Diff line number Diff line
@@ -207,6 +207,7 @@ static bool nfsd_up = false; 
static int nfsd_startup(int nrservs)

{

	int ret;

	struct net *net = &init_net;



	if (nfsd_up)

		return 0;
@@ -221,14 +222,21 @@ static int nfsd_startup(int nrservs) 
	ret = nfsd_init_socks();

	if (ret)

		goto out_racache;

	ret = lockd_up(&init_net);

	ret = lockd_up(net);

	if (ret)

		goto out_racache;

	ret = nfs4_state_start();

	if (ret)

		goto out_lockd;



	ret = nfs4_state_start_net(net);

	if (ret)

		goto out_net_state;



	nfsd_up = true;

	return 0;

out_net_state:

	nfs4_state_shutdown();

out_lockd:

	lockd_down(&init_net);

out_racache:
@@ -238,6 +246,8 @@ static int nfsd_startup(int nrservs) 


static void nfsd_shutdown(void)

{

	struct net *net = &init_net;



	/*

	 * write_ports can create the server without actually starting

	 * any threads--if we get shut down before any threads are
@@ -246,8 +256,9 @@ static void nfsd_shutdown(void) 
	 */

	if (!nfsd_up)

		return;

	nfs4_state_shutdown_net(net);

	nfs4_state_shutdown();

	lockd_down(&init_net);

	lockd_down(net);

	nfsd_racache_shutdown();

	nfsd_up = false;

}