Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm (6aaf4404) · Commits · 戴 / test

fs/dlm/ast.c

+117 −148

Original line number	Diff line number	Diff line
		@@ -14,17 +14,9 @@
		#include "dlm_internal.h"
		#include "lock.h"
		#include "user.h"
		#include "ast.h"

		#define WAKE_ASTS 0

		static uint64_t ast_seq_count;
		static struct list_head ast_queue;
		static spinlock_t ast_queue_lock;
		static struct task_struct * astd_task;
		static unsigned long astd_wakeflags;
		static struct mutex astd_running;

		static uint64_t dlm_cb_seq;
		static spinlock_t dlm_cb_seq_spin;

		static void dlm_dump_lkb_callbacks(struct dlm_lkb *lkb)
		{
		@@ -57,21 +49,13 @@ static void dlm_dump_lkb_callbacks(struct dlm_lkb *lkb)
		}
		}

		void dlm_del_ast(struct dlm_lkb *lkb)
		{
		spin_lock(&ast_queue_lock);
		if (!list_empty(&lkb->lkb_astqueue))
		list_del_init(&lkb->lkb_astqueue);
		spin_unlock(&ast_queue_lock);
		}

		int dlm_add_lkb_callback(struct dlm_lkb *lkb, uint32_t flags, int mode,
		int status, uint32_t sbflags, uint64_t seq)
		{
		struct dlm_ls *ls = lkb->lkb_resource->res_ls;
		uint64_t prev_seq;
		int prev_mode;
		int i;
		int i, rv;

		for (i = 0; i < DLM_CALLBACKS_SIZE; i++) {
		if (lkb->lkb_callbacks[i].seq)
		@@ -100,7 +84,8 @@ int dlm_add_lkb_callback(struct dlm_lkb *lkb, uint32_t flags, int mode,
		mode,
		(unsigned long long)prev_seq,
		prev_mode);
		return 0;
		rv = 0;
		goto out;
		}
		}

		@@ -109,6 +94,7 @@ int dlm_add_lkb_callback(struct dlm_lkb *lkb, uint32_t flags, int mode,
		lkb->lkb_callbacks[i].mode = mode;
		lkb->lkb_callbacks[i].sb_status = status;
		lkb->lkb_callbacks[i].sb_flags = (sbflags & 0x000000FF);
		rv = 0;
		break;
		}

		@@ -117,21 +103,24 @@ int dlm_add_lkb_callback(struct dlm_lkb *lkb, uint32_t flags, int mode,
		lkb->lkb_id, (unsigned long long)seq,
		flags, mode, status, sbflags);
		dlm_dump_lkb_callbacks(lkb);
		return -1;
		rv = -1;
		goto out;
		}

		return 0;
		out:
		return rv;
		}

		int dlm_rem_lkb_callback(struct dlm_ls ls, struct dlm_lkb lkb,
		struct dlm_callback cb, int resid)
		{
		int i;
		int i, rv;

		*resid = 0;

		if (!lkb->lkb_callbacks[0].seq)
		return -ENOENT;
		if (!lkb->lkb_callbacks[0].seq) {
		rv = -ENOENT;
		goto out;
		}

		/* oldest undelivered cb is callbacks[0] */

		@@ -163,7 +152,8 @@ int dlm_rem_lkb_callback(struct dlm_ls ls, struct dlm_lkb lkb,
		cb->mode,
		(unsigned long long)lkb->lkb_last_cast.seq,
		lkb->lkb_last_cast.mode);
		return 0;
		rv = 0;
		goto out;
		}
		}

		@@ -176,84 +166,85 @@ int dlm_rem_lkb_callback(struct dlm_ls ls, struct dlm_lkb lkb,
		memcpy(&lkb->lkb_last_bast, cb, sizeof(struct dlm_callback));
		lkb->lkb_last_bast_time = ktime_get();
		}

		return 0;
		rv = 0;
		out:
		return rv;
		}

		void dlm_add_ast(struct dlm_lkb *lkb, uint32_t flags, int mode, int status,
		void dlm_add_cb(struct dlm_lkb *lkb, uint32_t flags, int mode, int status,
		uint32_t sbflags)
		{
		uint64_t seq;
		struct dlm_ls *ls = lkb->lkb_resource->res_ls;
		uint64_t new_seq, prev_seq;
		int rv;

		spin_lock(&ast_queue_lock);

		seq = ++ast_seq_count;
		spin_lock(&dlm_cb_seq_spin);
		new_seq = ++dlm_cb_seq;
		spin_unlock(&dlm_cb_seq_spin);

		if (lkb->lkb_flags & DLM_IFL_USER) {
		spin_unlock(&ast_queue_lock);
		dlm_user_add_ast(lkb, flags, mode, status, sbflags, seq);
		dlm_user_add_ast(lkb, flags, mode, status, sbflags, new_seq);
		return;
		}

		rv = dlm_add_lkb_callback(lkb, flags, mode, status, sbflags, seq);
		if (rv < 0) {
		spin_unlock(&ast_queue_lock);
		return;
		}
		mutex_lock(&lkb->lkb_cb_mutex);
		prev_seq = lkb->lkb_callbacks[0].seq;

		if (list_empty(&lkb->lkb_astqueue)) {
		rv = dlm_add_lkb_callback(lkb, flags, mode, status, sbflags, new_seq);
		if (rv < 0)
		goto out;

		if (!prev_seq) {
		kref_get(&lkb->lkb_ref);
		list_add_tail(&lkb->lkb_astqueue, &ast_queue);
		}
		spin_unlock(&ast_queue_lock);

		set_bit(WAKE_ASTS, &astd_wakeflags);
		wake_up_process(astd_task);
		if (test_bit(LSFL_CB_DELAY, &ls->ls_flags)) {
		mutex_lock(&ls->ls_cb_mutex);
		list_add(&lkb->lkb_cb_list, &ls->ls_cb_delay);
		mutex_unlock(&ls->ls_cb_mutex);
		} else {
		queue_work(ls->ls_callback_wq, &lkb->lkb_cb_work);
		}
		}
		out:
		mutex_unlock(&lkb->lkb_cb_mutex);
		}

		static void process_asts(void)
		void dlm_callback_work(struct work_struct *work)
		{
		struct dlm_ls *ls = NULL;
		struct dlm_rsb *r = NULL;
		struct dlm_lkb *lkb;
		struct dlm_lkb *lkb = container_of(work, struct dlm_lkb, lkb_cb_work);
		struct dlm_ls *ls = lkb->lkb_resource->res_ls;
		void (castfn) (void astparam);
		void (bastfn) (void astparam, int mode);
		struct dlm_callback callbacks[DLM_CALLBACKS_SIZE];
		int i, rv, resid;

		repeat:
		spin_lock(&ast_queue_lock);
		list_for_each_entry(lkb, &ast_queue, lkb_astqueue) {
		r = lkb->lkb_resource;
		ls = r->res_ls;

		if (dlm_locking_stopped(ls))
		continue;

		/* we remove from astqueue list and remove everything in
		lkb_callbacks before releasing the spinlock so empty
		lkb_astqueue is always consistent with empty lkb_callbacks */

		list_del_init(&lkb->lkb_astqueue);

		castfn = lkb->lkb_astfn;
		bastfn = lkb->lkb_bastfn;

		memset(&callbacks, 0, sizeof(callbacks));

		mutex_lock(&lkb->lkb_cb_mutex);
		if (!lkb->lkb_callbacks[0].seq) {
		/* no callback work exists, shouldn't happen */
		log_error(ls, "dlm_callback_work %x no work", lkb->lkb_id);
		dlm_print_lkb(lkb);
		dlm_dump_lkb_callbacks(lkb);
		}

		for (i = 0; i < DLM_CALLBACKS_SIZE; i++) {
		rv = dlm_rem_lkb_callback(ls, lkb, &callbacks[i], &resid);
		if (rv < 0)
		break;
		}
		spin_unlock(&ast_queue_lock);

		if (resid) {
		/* shouldn't happen, for loop should have removed all */
		log_error(ls, "callback resid %d lkb %x",
		resid, lkb->lkb_id);
		/* cbs remain, loop should have removed all, shouldn't happen */
		log_error(ls, "dlm_callback_work %x resid %d", lkb->lkb_id,
		resid);
		dlm_print_lkb(lkb);
		dlm_dump_lkb_callbacks(lkb);
		}
		mutex_unlock(&lkb->lkb_cb_mutex);

		castfn = lkb->lkb_astfn;
		bastfn = lkb->lkb_bastfn;

		for (i = 0; i < DLM_CALLBACKS_SIZE; i++) {
		if (!callbacks[i].seq)
		@@ -269,78 +260,56 @@ repeat:
		}
		}

		/* removes ref for ast_queue, may cause lkb to be freed */
		/* undo kref_get from dlm_add_callback, may cause lkb to be freed */
		dlm_put_lkb(lkb);

		cond_resched();
		goto repeat;
		}
		spin_unlock(&ast_queue_lock);
		}

		static inline int no_asts(void)
		int dlm_callback_start(struct dlm_ls *ls)
		{
		int ret;

		spin_lock(&ast_queue_lock);
		ret = list_empty(&ast_queue);
		spin_unlock(&ast_queue_lock);
		return ret;
		}

		static int dlm_astd(void *data)
		{
		while (!kthread_should_stop()) {
		set_current_state(TASK_INTERRUPTIBLE);
		if (!test_bit(WAKE_ASTS, &astd_wakeflags))
		schedule();
		set_current_state(TASK_RUNNING);

		mutex_lock(&astd_running);
		if (test_and_clear_bit(WAKE_ASTS, &astd_wakeflags))
		process_asts();
		mutex_unlock(&astd_running);
		ls->ls_callback_wq = alloc_workqueue("dlm_callback",
		WQ_UNBOUND \|
		WQ_MEM_RECLAIM \|
		WQ_NON_REENTRANT,
		0);
		if (!ls->ls_callback_wq) {
		log_print("can't start dlm_callback workqueue");
		return -ENOMEM;
		}
		return 0;
		}

		void dlm_astd_wake(void)
		void dlm_callback_stop(struct dlm_ls *ls)
		{
		if (!no_asts()) {
		set_bit(WAKE_ASTS, &astd_wakeflags);
		wake_up_process(astd_task);
		}
		if (ls->ls_callback_wq)
		destroy_workqueue(ls->ls_callback_wq);
		}

		int dlm_astd_start(void)
		void dlm_callback_suspend(struct dlm_ls *ls)
		{
		struct task_struct *p;
		int error = 0;

		INIT_LIST_HEAD(&ast_queue);
		spin_lock_init(&ast_queue_lock);
		mutex_init(&astd_running);

		p = kthread_run(dlm_astd, NULL, "dlm_astd");
		if (IS_ERR(p))
		error = PTR_ERR(p);
		else
		astd_task = p;
		return error;
		}
		set_bit(LSFL_CB_DELAY, &ls->ls_flags);

		void dlm_astd_stop(void)
		{
		kthread_stop(astd_task);
		if (ls->ls_callback_wq)
		flush_workqueue(ls->ls_callback_wq);
		}

		void dlm_astd_suspend(void)
		void dlm_callback_resume(struct dlm_ls *ls)
		{
		mutex_lock(&astd_running);
		struct dlm_lkb lkb, safe;
		int count = 0;

		clear_bit(LSFL_CB_DELAY, &ls->ls_flags);

		if (!ls->ls_callback_wq)
		return;

		mutex_lock(&ls->ls_cb_mutex);
		list_for_each_entry_safe(lkb, safe, &ls->ls_cb_delay, lkb_cb_list) {
		list_del_init(&lkb->lkb_cb_list);
		queue_work(ls->ls_callback_wq, &lkb->lkb_cb_work);
		count++;
		}
		mutex_unlock(&ls->ls_cb_mutex);

		void dlm_astd_resume(void)
		{
		mutex_unlock(&astd_running);
		log_debug(ls, "dlm_callback_resume %d", count);
		}

fs/dlm/ast.h

+8 −7

Original line number	Diff line number	Diff line
		@@ -18,14 +18,15 @@ int dlm_add_lkb_callback(struct dlm_lkb *lkb, uint32_t flags, int mode,
		int status, uint32_t sbflags, uint64_t seq);
		int dlm_rem_lkb_callback(struct dlm_ls ls, struct dlm_lkb lkb,
		struct dlm_callback cb, int resid);
		void dlm_add_ast(struct dlm_lkb *lkb, uint32_t flags, int mode, int status,
		void dlm_add_cb(struct dlm_lkb *lkb, uint32_t flags, int mode, int status,
		uint32_t sbflags);

		void dlm_astd_wake(void);
		int dlm_astd_start(void);
		void dlm_astd_stop(void);
		void dlm_astd_suspend(void);
		void dlm_astd_resume(void);
		void dlm_callback_work(struct work_struct *work);
		int dlm_callback_start(struct dlm_ls *ls);
		void dlm_callback_stop(struct dlm_ls *ls);
		void dlm_callback_suspend(struct dlm_ls *ls);
		void dlm_callback_resume(struct dlm_ls *ls);

		#endif

fs/dlm/config.c

+65 −10

Original line number	Diff line number	Diff line
		@@ -28,7 +28,8 @@
		* /config/dlm/<cluster>/spaces/<space>/nodes/<node>/weight
		* /config/dlm/<cluster>/comms/<comm>/nodeid
		* /config/dlm/<cluster>/comms/<comm>/local
		* /config/dlm/<cluster>/comms/<comm>/addr
		* /config/dlm/<cluster>/comms/<comm>/addr (write only)
		* /config/dlm/<cluster>/comms/<comm>/addr_list (read only)
		* The <cluster> level is useless, but I haven't figured out how to avoid it.
		*/

		@@ -80,6 +81,7 @@ static ssize_t comm_local_write(struct dlm_comm cm, const char buf,
		size_t len);
		static ssize_t comm_addr_write(struct dlm_comm cm, const char buf,
		size_t len);
		static ssize_t comm_addr_list_read(struct dlm_comm cm, char buf);
		static ssize_t node_nodeid_read(struct dlm_node nd, char buf);
		static ssize_t node_nodeid_write(struct dlm_node nd, const char buf,
		size_t len);
		@@ -92,7 +94,6 @@ struct dlm_cluster {
		unsigned int cl_tcp_port;
		unsigned int cl_buffer_size;
		unsigned int cl_rsbtbl_size;
		unsigned int cl_lkbtbl_size;
		unsigned int cl_dirtbl_size;
		unsigned int cl_recover_timer;
		unsigned int cl_toss_secs;
		@@ -101,13 +102,13 @@ struct dlm_cluster {
		unsigned int cl_protocol;
		unsigned int cl_timewarn_cs;
		unsigned int cl_waitwarn_us;
		unsigned int cl_new_rsb_count;
		};

		enum {
		CLUSTER_ATTR_TCP_PORT = 0,
		CLUSTER_ATTR_BUFFER_SIZE,
		CLUSTER_ATTR_RSBTBL_SIZE,
		CLUSTER_ATTR_LKBTBL_SIZE,
		CLUSTER_ATTR_DIRTBL_SIZE,
		CLUSTER_ATTR_RECOVER_TIMER,
		CLUSTER_ATTR_TOSS_SECS,
		@@ -116,6 +117,7 @@ enum {
		CLUSTER_ATTR_PROTOCOL,
		CLUSTER_ATTR_TIMEWARN_CS,
		CLUSTER_ATTR_WAITWARN_US,
		CLUSTER_ATTR_NEW_RSB_COUNT,
		};

		struct cluster_attribute {
		@@ -160,7 +162,6 @@ __CONFIGFS_ATTR(name, 0644, name##_read, name##_write)
		CLUSTER_ATTR(tcp_port, 1);
		CLUSTER_ATTR(buffer_size, 1);
		CLUSTER_ATTR(rsbtbl_size, 1);
		CLUSTER_ATTR(lkbtbl_size, 1);
		CLUSTER_ATTR(dirtbl_size, 1);
		CLUSTER_ATTR(recover_timer, 1);
		CLUSTER_ATTR(toss_secs, 1);
		@@ -169,12 +170,12 @@ CLUSTER_ATTR(log_debug, 0);
		CLUSTER_ATTR(protocol, 0);
		CLUSTER_ATTR(timewarn_cs, 1);
		CLUSTER_ATTR(waitwarn_us, 0);
		CLUSTER_ATTR(new_rsb_count, 0);

		static struct configfs_attribute *cluster_attrs[] = {
		[CLUSTER_ATTR_TCP_PORT] = &cluster_attr_tcp_port.attr,
		[CLUSTER_ATTR_BUFFER_SIZE] = &cluster_attr_buffer_size.attr,
		[CLUSTER_ATTR_RSBTBL_SIZE] = &cluster_attr_rsbtbl_size.attr,
		[CLUSTER_ATTR_LKBTBL_SIZE] = &cluster_attr_lkbtbl_size.attr,
		[CLUSTER_ATTR_DIRTBL_SIZE] = &cluster_attr_dirtbl_size.attr,
		[CLUSTER_ATTR_RECOVER_TIMER] = &cluster_attr_recover_timer.attr,
		[CLUSTER_ATTR_TOSS_SECS] = &cluster_attr_toss_secs.attr,
		@@ -183,6 +184,7 @@ static struct configfs_attribute *cluster_attrs[] = {
		[CLUSTER_ATTR_PROTOCOL] = &cluster_attr_protocol.attr,
		[CLUSTER_ATTR_TIMEWARN_CS] = &cluster_attr_timewarn_cs.attr,
		[CLUSTER_ATTR_WAITWARN_US] = &cluster_attr_waitwarn_us.attr,
		[CLUSTER_ATTR_NEW_RSB_COUNT] = &cluster_attr_new_rsb_count.attr,
		NULL,
		};

		@@ -190,6 +192,7 @@ enum {
		COMM_ATTR_NODEID = 0,
		COMM_ATTR_LOCAL,
		COMM_ATTR_ADDR,
		COMM_ATTR_ADDR_LIST,
		};

		struct comm_attribute {
		@@ -217,14 +220,22 @@ static struct comm_attribute comm_attr_local = {
		static struct comm_attribute comm_attr_addr = {
		.attr = { .ca_owner = THIS_MODULE,
		.ca_name = "addr",
		.ca_mode = S_IRUGO \| S_IWUSR },
		.ca_mode = S_IWUSR },
		.store = comm_addr_write,
		};

		static struct comm_attribute comm_attr_addr_list = {
		.attr = { .ca_owner = THIS_MODULE,
		.ca_name = "addr_list",
		.ca_mode = S_IRUGO },
		.show = comm_addr_list_read,
		};

		static struct configfs_attribute *comm_attrs[] = {
		[COMM_ATTR_NODEID] = &comm_attr_nodeid.attr,
		[COMM_ATTR_LOCAL] = &comm_attr_local.attr,
		[COMM_ATTR_ADDR] = &comm_attr_addr.attr,
		[COMM_ATTR_ADDR_LIST] = &comm_attr_addr_list.attr,
		NULL,
		};

		@@ -435,7 +446,6 @@ static struct config_group make_cluster(struct config_group g,
		cl->cl_tcp_port = dlm_config.ci_tcp_port;
		cl->cl_buffer_size = dlm_config.ci_buffer_size;
		cl->cl_rsbtbl_size = dlm_config.ci_rsbtbl_size;
		cl->cl_lkbtbl_size = dlm_config.ci_lkbtbl_size;
		cl->cl_dirtbl_size = dlm_config.ci_dirtbl_size;
		cl->cl_recover_timer = dlm_config.ci_recover_timer;
		cl->cl_toss_secs = dlm_config.ci_toss_secs;
		@@ -444,6 +454,7 @@ static struct config_group make_cluster(struct config_group g,
		cl->cl_protocol = dlm_config.ci_protocol;
		cl->cl_timewarn_cs = dlm_config.ci_timewarn_cs;
		cl->cl_waitwarn_us = dlm_config.ci_waitwarn_us;
		cl->cl_new_rsb_count = dlm_config.ci_new_rsb_count;

		space_list = &sps->ss_group;
		comm_list = &cms->cs_group;
		@@ -720,6 +731,50 @@ static ssize_t comm_addr_write(struct dlm_comm cm, const char buf, size_t len)
		return len;
		}

		static ssize_t comm_addr_list_read(struct dlm_comm cm, char buf)
		{
		ssize_t s;
		ssize_t allowance;
		int i;
		struct sockaddr_storage *addr;
		struct sockaddr_in *addr_in;
		struct sockaddr_in6 *addr_in6;

		/* Taken from ip6_addr_string() defined in lib/vsprintf.c */
		char buf0[sizeof("AF_INET6 xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:255.255.255.255\n")];


		/* Derived from SIMPLE_ATTR_SIZE of fs/configfs/file.c */
		allowance = 4096;
		buf[0] = '\0';

		for (i = 0; i < cm->addr_count; i++) {
		addr = cm->addr[i];

		switch(addr->ss_family) {
		case AF_INET:
		addr_in = (struct sockaddr_in *)addr;
		s = sprintf(buf0, "AF_INET %pI4\n", &addr_in->sin_addr.s_addr);
		break;
		case AF_INET6:
		addr_in6 = (struct sockaddr_in6 *)addr;
		s = sprintf(buf0, "AF_INET6 %pI6\n", &addr_in6->sin6_addr);
		break;
		default:
		s = sprintf(buf0, "%s\n", "<UNKNOWN>");
		break;
		}
		allowance -= s;
		if (allowance >= 0)
		strcat(buf, buf0);
		else {
		allowance += s;
		break;
		}
		}
		return 4096 - allowance;
		}

		static ssize_t show_node(struct config_item i, struct configfs_attribute a,
		char *buf)
		{
		@@ -983,7 +1038,6 @@ int dlm_our_addr(struct sockaddr_storage *addr, int num)
		#define DEFAULT_TCP_PORT 21064
		#define DEFAULT_BUFFER_SIZE 4096
		#define DEFAULT_RSBTBL_SIZE 1024
		#define DEFAULT_LKBTBL_SIZE 1024
		#define DEFAULT_DIRTBL_SIZE 1024
		#define DEFAULT_RECOVER_TIMER 5
		#define DEFAULT_TOSS_SECS 10
		@@ -992,12 +1046,12 @@ int dlm_our_addr(struct sockaddr_storage *addr, int num)
		#define DEFAULT_PROTOCOL 0
		#define DEFAULT_TIMEWARN_CS 500 /* 5 sec = 500 centiseconds */
		#define DEFAULT_WAITWARN_US 0
		#define DEFAULT_NEW_RSB_COUNT 128

		struct dlm_config_info dlm_config = {
		.ci_tcp_port = DEFAULT_TCP_PORT,
		.ci_buffer_size = DEFAULT_BUFFER_SIZE,
		.ci_rsbtbl_size = DEFAULT_RSBTBL_SIZE,
		.ci_lkbtbl_size = DEFAULT_LKBTBL_SIZE,
		.ci_dirtbl_size = DEFAULT_DIRTBL_SIZE,
		.ci_recover_timer = DEFAULT_RECOVER_TIMER,
		.ci_toss_secs = DEFAULT_TOSS_SECS,
		@@ -1005,6 +1059,7 @@ struct dlm_config_info dlm_config = {
		.ci_log_debug = DEFAULT_LOG_DEBUG,
		.ci_protocol = DEFAULT_PROTOCOL,
		.ci_timewarn_cs = DEFAULT_TIMEWARN_CS,
		.ci_waitwarn_us = DEFAULT_WAITWARN_US
		.ci_waitwarn_us = DEFAULT_WAITWARN_US,
		.ci_new_rsb_count = DEFAULT_NEW_RSB_COUNT
		};

fs/dlm/config.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -20,7 +20,6 @@ struct dlm_config_info {
		int ci_tcp_port;
		int ci_buffer_size;
		int ci_rsbtbl_size;
		int ci_lkbtbl_size;
		int ci_dirtbl_size;
		int ci_recover_timer;
		int ci_toss_secs;
		@@ -29,6 +28,7 @@ struct dlm_config_info {
		int ci_protocol;
		int ci_timewarn_cs;
		int ci_waitwarn_us;
		int ci_new_rsb_count;
		};

		extern struct dlm_config_info dlm_config;

fs/dlm/dlm_internal.h

+17 −12

Original line number	Diff line number	Diff line
		@@ -37,6 +37,7 @@
		#include <linux/jhash.h>
		#include <linux/miscdevice.h>
		#include <linux/mutex.h>
		#include <linux/idr.h>
		#include <asm/uaccess.h>

		#include <linux/dlm.h>
		@@ -52,7 +53,6 @@ struct dlm_ls;
		struct dlm_lkb;
		struct dlm_rsb;
		struct dlm_member;
		struct dlm_lkbtable;
		struct dlm_rsbtable;
		struct dlm_dirtable;
		struct dlm_direntry;
		@@ -108,11 +108,6 @@ struct dlm_rsbtable {
		spinlock_t lock;
		};

		struct dlm_lkbtable {
		struct list_head list;
		rwlock_t lock;
		uint16_t counter;
		};

		/*
		* Lockspace member (per node in a ls)
		@@ -248,17 +243,18 @@ struct dlm_lkb {
		int8_t lkb_wait_count;
		int lkb_wait_nodeid; /* for debugging */

		struct list_head lkb_idtbl_list; /* lockspace lkbtbl */
		struct list_head lkb_statequeue; /* rsb g/c/w list */
		struct list_head lkb_rsb_lookup; /* waiting for rsb lookup */
		struct list_head lkb_wait_reply; /* waiting for remote reply */
		struct list_head lkb_astqueue; /* need ast to be sent */
		struct list_head lkb_ownqueue; /* list of locks for a process */
		struct list_head lkb_time_list;
		ktime_t lkb_timestamp;
		ktime_t lkb_wait_time;
		unsigned long lkb_timeout_cs;

		struct mutex lkb_cb_mutex;
		struct work_struct lkb_cb_work;
		struct list_head lkb_cb_list; /* for ls_cb_delay or proc->asts */
		struct dlm_callback lkb_callbacks[DLM_CALLBACKS_SIZE];
		struct dlm_callback lkb_last_cast;
		struct dlm_callback lkb_last_bast;
		@@ -299,7 +295,7 @@ struct dlm_rsb {
		int res_recover_locks_count;

		char *res_lvbptr;
		char res_name[1];
		char res_name[DLM_RESNAME_MAXLEN+1];
		};

		/* find_rsb() flags */
		@@ -465,12 +461,12 @@ struct dlm_ls {
		unsigned long ls_scan_time;
		struct kobject ls_kobj;

		struct idr ls_lkbidr;
		spinlock_t ls_lkbidr_spin;

		struct dlm_rsbtable *ls_rsbtbl;
		uint32_t ls_rsbtbl_size;

		struct dlm_lkbtable *ls_lkbtbl;
		uint32_t ls_lkbtbl_size;

		struct dlm_dirtable *ls_dirtbl;
		uint32_t ls_dirtbl_size;

		@@ -483,6 +479,10 @@ struct dlm_ls {
		struct mutex ls_timeout_mutex;
		struct list_head ls_timeout;

		spinlock_t ls_new_rsb_spin;
		int ls_new_rsb_count;
		struct list_head ls_new_rsb; /* new rsb structs */

		struct list_head ls_nodes; /* current nodes in ls */
		struct list_head ls_nodes_gone; /* dead node list, recovery */
		int ls_num_nodes; /* number of nodes in ls */
		@@ -506,8 +506,12 @@ struct dlm_ls {

		struct miscdevice ls_device;

		struct workqueue_struct *ls_callback_wq;

		/* recovery related */

		struct mutex ls_cb_mutex;
		struct list_head ls_cb_delay; /* save for queue_work later */
		struct timer_list ls_timer;
		struct task_struct *ls_recoverd_task;
		struct mutex ls_recoverd_active;
		@@ -544,6 +548,7 @@ struct dlm_ls {
		#define LSFL_RCOM_WAIT 4
		#define LSFL_UEVENT_WAIT 5
		#define LSFL_TIMEWARN 6
		#define LSFL_CB_DELAY 7

		/* much of this is just saving user space pointers associated with the
		lock that we pass back to the user lib with an ast */

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