Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw (1b21f458) · Commits · e / devices / android_kernel_sony_msm8994

fs/dlm/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -8,6 +8,7 @@ dlm-y := ast.o \
		member.o \
		memory.o \
		midcomms.o \
		netlink.o \
		lowcomms.o \
		rcom.o \
		recover.o \

fs/dlm/config.c

+20 −5

Original line number	Diff line number	Diff line
		@@ -90,6 +90,7 @@ struct cluster {
		unsigned int cl_scan_secs;
		unsigned int cl_log_debug;
		unsigned int cl_protocol;
		unsigned int cl_timewarn_cs;
		};

		enum {
		@@ -103,6 +104,7 @@ enum {
		CLUSTER_ATTR_SCAN_SECS,
		CLUSTER_ATTR_LOG_DEBUG,
		CLUSTER_ATTR_PROTOCOL,
		CLUSTER_ATTR_TIMEWARN_CS,
		};

		struct cluster_attribute {
		@@ -162,6 +164,7 @@ CLUSTER_ATTR(toss_secs, 1);
		CLUSTER_ATTR(scan_secs, 1);
		CLUSTER_ATTR(log_debug, 0);
		CLUSTER_ATTR(protocol, 0);
		CLUSTER_ATTR(timewarn_cs, 1);

		static struct configfs_attribute *cluster_attrs[] = {
		[CLUSTER_ATTR_TCP_PORT] = &cluster_attr_tcp_port.attr,
		@@ -174,6 +177,7 @@ static struct configfs_attribute *cluster_attrs[] = {
		[CLUSTER_ATTR_SCAN_SECS] = &cluster_attr_scan_secs.attr,
		[CLUSTER_ATTR_LOG_DEBUG] = &cluster_attr_log_debug.attr,
		[CLUSTER_ATTR_PROTOCOL] = &cluster_attr_protocol.attr,
		[CLUSTER_ATTR_TIMEWARN_CS] = &cluster_attr_timewarn_cs.attr,
		NULL,
		};

		@@ -429,6 +433,8 @@ static struct config_group make_cluster(struct config_group g,
		cl->cl_toss_secs = dlm_config.ci_toss_secs;
		cl->cl_scan_secs = dlm_config.ci_scan_secs;
		cl->cl_log_debug = dlm_config.ci_log_debug;
		cl->cl_protocol = dlm_config.ci_protocol;
		cl->cl_timewarn_cs = dlm_config.ci_timewarn_cs;

		space_list = &sps->ss_group;
		comm_list = &cms->cs_group;
		@@ -748,9 +754,16 @@ static ssize_t node_weight_write(struct node nd, const char buf, size_t len)

		static struct space get_space(char name)
		{
		struct config_item *i;

		if (!space_list)
		return NULL;
		return to_space(config_group_find_obj(space_list, name));

		down(&space_list->cg_subsys->su_sem);
		i = config_group_find_obj(space_list, name);
		up(&space_list->cg_subsys->su_sem);

		return to_space(i);
		}

		static void put_space(struct space *sp)
		@@ -776,20 +789,20 @@ static struct comm get_comm(int nodeid, struct sockaddr_storage addr)
		if (cm->nodeid != nodeid)
		continue;
		found = 1;
		config_item_get(i);
		break;
		} else {
		if (!cm->addr_count \|\|
		memcmp(cm->addr[0], addr, sizeof(*addr)))
		continue;
		found = 1;
		config_item_get(i);
		break;
		}
		}
		up(&clusters_root.subsys.su_sem);

		if (found)
		config_item_get(i);
		else
		if (!found)
		cm = NULL;
		return cm;
		}
		@@ -909,6 +922,7 @@ int dlm_our_addr(struct sockaddr_storage *addr, int num)
		#define DEFAULT_SCAN_SECS 5
		#define DEFAULT_LOG_DEBUG 0
		#define DEFAULT_PROTOCOL 0
		#define DEFAULT_TIMEWARN_CS 500 /* 5 sec = 500 centiseconds */

		struct dlm_config_info dlm_config = {
		.ci_tcp_port = DEFAULT_TCP_PORT,
		@@ -920,6 +934,7 @@ struct dlm_config_info dlm_config = {
		.ci_toss_secs = DEFAULT_TOSS_SECS,
		.ci_scan_secs = DEFAULT_SCAN_SECS,
		.ci_log_debug = DEFAULT_LOG_DEBUG,
		.ci_protocol = DEFAULT_PROTOCOL
		.ci_protocol = DEFAULT_PROTOCOL,
		.ci_timewarn_cs = DEFAULT_TIMEWARN_CS
		};

fs/dlm/config.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -27,6 +27,7 @@ struct dlm_config_info {
		int ci_scan_secs;
		int ci_log_debug;
		int ci_protocol;
		int ci_timewarn_cs;
		};

		extern struct dlm_config_info dlm_config;

fs/dlm/debug_fs.c

+178 −8

Original line number	Diff line number	Diff line
		@@ -17,6 +17,7 @@
		#include <linux/debugfs.h>

		#include "dlm_internal.h"
		#include "lock.h"

		#define DLM_DEBUG_BUF_LEN 4096
		static char debug_buf[DLM_DEBUG_BUF_LEN];
		@@ -26,6 +27,8 @@ static struct dentry *dlm_root;

		struct rsb_iter {
		int entry;
		int locks;
		int header;
		struct dlm_ls *ls;
		struct list_head *next;
		struct dlm_rsb *rsb;
		@@ -57,7 +60,7 @@ static char *print_lockmode(int mode)
		}
		}

		static void print_lock(struct seq_file s, struct dlm_lkb lkb,
		static void print_resource_lock(struct seq_file s, struct dlm_lkb lkb,
		struct dlm_rsb *res)
		{
		seq_printf(s, "%08x %s", lkb->lkb_id, print_lockmode(lkb->lkb_grmode));
		@@ -85,6 +88,8 @@ static int print_resource(struct dlm_rsb res, struct seq_file s)
		struct dlm_lkb *lkb;
		int i, lvblen = res->res_ls->ls_lvblen, recover_list, root_list;

		lock_rsb(res);

		seq_printf(s, "\nResource %p Name (len=%d) \"", res, res->res_length);
		for (i = 0; i < res->res_length; i++) {
		if (isprint(res->res_name[i]))
		@@ -129,15 +134,15 @@ static int print_resource(struct dlm_rsb res, struct seq_file s)
		/* Print the locks attached to this resource */
		seq_printf(s, "Granted Queue\n");
		list_for_each_entry(lkb, &res->res_grantqueue, lkb_statequeue)
		print_lock(s, lkb, res);
		print_resource_lock(s, lkb, res);

		seq_printf(s, "Conversion Queue\n");
		list_for_each_entry(lkb, &res->res_convertqueue, lkb_statequeue)
		print_lock(s, lkb, res);
		print_resource_lock(s, lkb, res);

		seq_printf(s, "Waiting Queue\n");
		list_for_each_entry(lkb, &res->res_waitqueue, lkb_statequeue)
		print_lock(s, lkb, res);
		print_resource_lock(s, lkb, res);

		if (list_empty(&res->res_lookup))
		goto out;
		@@ -151,6 +156,61 @@ static int print_resource(struct dlm_rsb res, struct seq_file s)
		seq_printf(s, "\n");
		}
		out:
		unlock_rsb(res);
		return 0;
		}

		static void print_lock(struct seq_file s, struct dlm_lkb lkb, struct dlm_rsb *r)
		{
		struct dlm_user_args *ua;
		unsigned int waiting = 0;
		uint64_t xid = 0;

		if (lkb->lkb_flags & DLM_IFL_USER) {
		ua = (struct dlm_user_args *) lkb->lkb_astparam;
		if (ua)
		xid = ua->xid;
		}

		if (lkb->lkb_timestamp)
		waiting = jiffies_to_msecs(jiffies - lkb->lkb_timestamp);

		/* id nodeid remid pid xid exflags flags sts grmode rqmode time_ms
		r_nodeid r_len r_name */

		seq_printf(s, "%x %d %x %u %llu %x %x %d %d %d %u %u %d \"%s\"\n",
		lkb->lkb_id,
		lkb->lkb_nodeid,
		lkb->lkb_remid,
		lkb->lkb_ownpid,
		(unsigned long long)xid,
		lkb->lkb_exflags,
		lkb->lkb_flags,
		lkb->lkb_status,
		lkb->lkb_grmode,
		lkb->lkb_rqmode,
		waiting,
		r->res_nodeid,
		r->res_length,
		r->res_name);
		}

		static int print_locks(struct dlm_rsb r, struct seq_file s)
		{
		struct dlm_lkb *lkb;

		lock_rsb(r);

		list_for_each_entry(lkb, &r->res_grantqueue, lkb_statequeue)
		print_lock(s, lkb, r);

		list_for_each_entry(lkb, &r->res_convertqueue, lkb_statequeue)
		print_lock(s, lkb, r);

		list_for_each_entry(lkb, &r->res_waitqueue, lkb_statequeue)
		print_lock(s, lkb, r);

		unlock_rsb(r);
		return 0;
		}

		@@ -166,6 +226,9 @@ static int rsb_iter_next(struct rsb_iter *ri)
		read_lock(&ls->ls_rsbtbl[i].lock);
		if (!list_empty(&ls->ls_rsbtbl[i].list)) {
		ri->next = ls->ls_rsbtbl[i].list.next;
		ri->rsb = list_entry(ri->next, struct dlm_rsb,
		res_hashchain);
		dlm_hold_rsb(ri->rsb);
		read_unlock(&ls->ls_rsbtbl[i].lock);
		break;
		}
		@@ -176,6 +239,7 @@ static int rsb_iter_next(struct rsb_iter *ri)
		if (ri->entry >= ls->ls_rsbtbl_size)
		return 1;
		} else {
		struct dlm_rsb *old = ri->rsb;
		i = ri->entry;
		read_lock(&ls->ls_rsbtbl[i].lock);
		ri->next = ri->next->next;
		@@ -184,11 +248,14 @@ static int rsb_iter_next(struct rsb_iter *ri)
		ri->next = NULL;
		ri->entry++;
		read_unlock(&ls->ls_rsbtbl[i].lock);
		dlm_put_rsb(old);
		goto top;
		}
		ri->rsb = list_entry(ri->next, struct dlm_rsb, res_hashchain);
		dlm_hold_rsb(ri->rsb);
		read_unlock(&ls->ls_rsbtbl[i].lock);
		dlm_put_rsb(old);
		}
		ri->rsb = list_entry(ri->next, struct dlm_rsb, res_hashchain);

		return 0;
		}
		@@ -202,7 +269,7 @@ static struct rsb_iter rsb_iter_init(struct dlm_ls ls)
		{
		struct rsb_iter *ri;

		ri = kmalloc(sizeof *ri, GFP_KERNEL);
		ri = kzalloc(sizeof *ri, GFP_KERNEL);
		if (!ri)
		return NULL;

		@@ -260,7 +327,17 @@ static int rsb_seq_show(struct seq_file file, void iter_ptr)
		{
		struct rsb_iter *ri = iter_ptr;

		if (ri->locks) {
		if (ri->header) {
		seq_printf(file, "id nodeid remid pid xid exflags flags "
		"sts grmode rqmode time_ms r_nodeid "
		"r_len r_name\n");
		ri->header = 0;
		}
		print_locks(ri->rsb, file);
		} else {
		print_resource(ri->rsb, file);
		}

		return 0;
		}
		@@ -295,6 +372,83 @@ static const struct file_operations rsb_fops = {
		.release = seq_release
		};

		/*
		* Dump state in compact per-lock listing
		*/

		static struct rsb_iter locks_iter_init(struct dlm_ls ls, loff_t *pos)
		{
		struct rsb_iter *ri;

		ri = kzalloc(sizeof *ri, GFP_KERNEL);
		if (!ri)
		return NULL;

		ri->ls = ls;
		ri->entry = 0;
		ri->next = NULL;
		ri->locks = 1;

		if (*pos == 0)
		ri->header = 1;

		if (rsb_iter_next(ri)) {
		rsb_iter_free(ri);
		return NULL;
		}

		return ri;
		}

		static void locks_seq_start(struct seq_file file, loff_t *pos)
		{
		struct rsb_iter *ri;
		loff_t n = *pos;

		ri = locks_iter_init(file->private, pos);
		if (!ri)
		return NULL;

		while (n--) {
		if (rsb_iter_next(ri)) {
		rsb_iter_free(ri);
		return NULL;
		}
		}

		return ri;
		}

		static struct seq_operations locks_seq_ops = {
		.start = locks_seq_start,
		.next = rsb_seq_next,
		.stop = rsb_seq_stop,
		.show = rsb_seq_show,
		};

		static int locks_open(struct inode inode, struct file file)
		{
		struct seq_file *seq;
		int ret;

		ret = seq_open(file, &locks_seq_ops);
		if (ret)
		return ret;

		seq = file->private_data;
		seq->private = inode->i_private;

		return 0;
		}

		static const struct file_operations locks_fops = {
		.owner = THIS_MODULE,
		.open = locks_open,
		.read = seq_read,
		.llseek = seq_lseek,
		.release = seq_release
		};

		/*
		* dump lkb's on the ls_waiters list
		*/
		@@ -362,6 +516,20 @@ int dlm_create_debug_file(struct dlm_ls *ls)
		return -ENOMEM;
		}

		memset(name, 0, sizeof(name));
		snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_locks", ls->ls_name);

		ls->ls_debug_locks_dentry = debugfs_create_file(name,
		S_IFREG \| S_IRUGO,
		dlm_root,
		ls,
		&locks_fops);
		if (!ls->ls_debug_locks_dentry) {
		debugfs_remove(ls->ls_debug_waiters_dentry);
		debugfs_remove(ls->ls_debug_rsb_dentry);
		return -ENOMEM;
		}

		return 0;
		}

		@@ -371,6 +539,8 @@ void dlm_delete_debug_file(struct dlm_ls *ls)
		debugfs_remove(ls->ls_debug_rsb_dentry);
		if (ls->ls_debug_waiters_dentry)
		debugfs_remove(ls->ls_debug_waiters_dentry);
		if (ls->ls_debug_locks_dentry)
		debugfs_remove(ls->ls_debug_locks_dentry);
		}

		int dlm_register_debugfs(void)

fs/dlm/dlm_internal.h

+17 −0

Original line number	Diff line number	Diff line
		@@ -151,6 +151,7 @@ struct dlm_args {
		void *bastaddr;
		int mode;
		struct dlm_lksb *lksb;
		unsigned long timeout;
		};


		@@ -213,6 +214,9 @@ struct dlm_args {
		#define DLM_IFL_OVERLAP_UNLOCK 0x00080000
		#define DLM_IFL_OVERLAP_CANCEL 0x00100000
		#define DLM_IFL_ENDOFLIFE 0x00200000
		#define DLM_IFL_WATCH_TIMEWARN 0x00400000
		#define DLM_IFL_TIMEOUT_CANCEL 0x00800000
		#define DLM_IFL_DEADLOCK_CANCEL 0x01000000
		#define DLM_IFL_USER 0x00000001
		#define DLM_IFL_ORPHAN 0x00000002

		@@ -243,6 +247,9 @@ struct dlm_lkb {
		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;
		unsigned long lkb_timestamp;
		unsigned long lkb_timeout_cs;

		char *lkb_lvbptr;
		struct dlm_lksb lkb_lksb; / caller's status block */
		@@ -447,12 +454,16 @@ struct dlm_ls {
		struct mutex ls_orphans_mutex;
		struct list_head ls_orphans;

		struct mutex ls_timeout_mutex;
		struct list_head ls_timeout;

		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 */
		int ls_low_nodeid;
		int ls_total_weight;
		int *ls_node_array;
		gfp_t ls_allocation;

		struct dlm_rsb ls_stub_rsb; /* for returning errors */
		struct dlm_lkb ls_stub_lkb; /* for returning errors */
		@@ -460,9 +471,12 @@ struct dlm_ls {

		struct dentry ls_debug_rsb_dentry; / debugfs */
		struct dentry ls_debug_waiters_dentry; / debugfs */
		struct dentry ls_debug_locks_dentry; / debugfs */

		wait_queue_head_t ls_uevent_wait; /* user part of join/leave */
		int ls_uevent_result;
		struct completion ls_members_done;
		int ls_members_result;

		struct miscdevice ls_device;

		@@ -472,6 +486,7 @@ struct dlm_ls {
		struct task_struct *ls_recoverd_task;
		struct mutex ls_recoverd_active;
		spinlock_t ls_recover_lock;
		unsigned long ls_recover_begin; /* jiffies timestamp */
		uint32_t ls_recover_status; /* DLM_RS_ */
		uint64_t ls_recover_seq;
		struct dlm_recover *ls_recover_args;
		@@ -501,6 +516,7 @@ struct dlm_ls {
		#define LSFL_RCOM_READY 3
		#define LSFL_RCOM_WAIT 4
		#define LSFL_UEVENT_WAIT 5
		#define LSFL_TIMEWARN 6

		/* much of this is just saving user space pointers associated with the
		lock that we pass back to the user lib with an ast */
		@@ -518,6 +534,7 @@ struct dlm_user_args {
		void __user *castaddr;
		void __user *bastparam;
		void __user *bastaddr;
		uint64_t xid;
		};

		#define DLM_PROC_FLAGS_CLOSING 1