109 static void ocfs2_dentry_post_unlock(struct ocfs2_super *osb,
340 static int ocfs2_lock_create(struct ocfs2_super *osb,
346 static void __ocfs2_cluster_unlock(struct ocfs2_super *osb,
349 static inline void ocfs2_cluster_unlock(struct ocfs2_super *osb,  in ocfs2_cluster_unlock()  argument
353 	__ocfs2_cluster_unlock(osb, lockres, level, _RET_IP_);  in ocfs2_cluster_unlock()
360 static void ocfs2_schedule_blocked_lock(struct ocfs2_super *osb,
374 static void ocfs2_downconvert_on_unlock(struct ocfs2_super *osb,
378 static void ocfs2_drop_osb_locks(struct ocfs2_super *osb);
382 static int ocfs2_downconvert_lock(struct ocfs2_super *osb,
387 static int ocfs2_prepare_cancel_convert(struct ocfs2_super *osb,
389 static int ocfs2_cancel_convert(struct ocfs2_super *osb,
496 static void ocfs2_lock_res_init_common(struct ocfs2_super *osb,  in ocfs2_lock_res_init_common()  argument
514 	ocfs2_add_lockres_tracking(res, osb->osb_dlm_debug);  in ocfs2_lock_res_init_common()
643 				      struct ocfs2_super *osb)  in ocfs2_super_lock_res_init()  argument
650 	ocfs2_lock_res_init_common(osb, res, OCFS2_LOCK_TYPE_SUPER,  in ocfs2_super_lock_res_init()
651 				   &ocfs2_super_lops, osb);  in ocfs2_super_lock_res_init()
655 				       struct ocfs2_super *osb)  in ocfs2_rename_lock_res_init()  argument
661 	ocfs2_lock_res_init_common(osb, res, OCFS2_LOCK_TYPE_RENAME,  in ocfs2_rename_lock_res_init()
662 				   &ocfs2_rename_lops, osb);  in ocfs2_rename_lock_res_init()
666 					 struct ocfs2_super *osb)  in ocfs2_nfs_sync_lock_res_init()  argument
672 	ocfs2_lock_res_init_common(osb, res, OCFS2_LOCK_TYPE_NFS_SYNC,  in ocfs2_nfs_sync_lock_res_init()
673 				   &ocfs2_nfs_sync_lops, osb);  in ocfs2_nfs_sync_lock_res_init()
677 					    struct ocfs2_super *osb)  in ocfs2_orphan_scan_lock_res_init()  argument
681 	ocfs2_lock_res_init_common(osb, res, OCFS2_LOCK_TYPE_ORPHAN_SCAN,  in ocfs2_orphan_scan_lock_res_init()
682 				   &ocfs2_orphan_scan_lops, osb);  in ocfs2_orphan_scan_lock_res_init()
712 				  struct ocfs2_super *osb, u64 ref_blkno,  in ocfs2_refcount_lock_res_init()  argument
718 	ocfs2_lock_res_init_common(osb, lockres, OCFS2_LOCK_TYPE_REFCOUNT,  in ocfs2_refcount_lock_res_init()
719 				   &ocfs2_refcount_block_lops, osb);  in ocfs2_refcount_lock_res_init()
980 				    struct ocfs2_super *osb)  in __lockres_clear_pending()  argument
1000 		ocfs2_wake_downconvert_thread(osb);  in __lockres_clear_pending()
1006 				  struct ocfs2_super *osb)  in lockres_clear_pending()  argument
1011 	__lockres_clear_pending(lockres, generation, osb);  in lockres_clear_pending()
1028 	struct ocfs2_super *osb = ocfs2_get_lockres_osb(lockres);  in ocfs2_blocking_ast()  local
1048 		ocfs2_schedule_blocked_lock(osb, lockres);  in ocfs2_blocking_ast()
1053 	ocfs2_wake_downconvert_thread(osb);  in ocfs2_blocking_ast()
1059 	struct ocfs2_super *osb = ocfs2_get_lockres_osb(lockres);  in ocfs2_locking_ast()  local
1116 	__lockres_clear_pending(lockres, lockres->l_pending_gen,  osb);  in ocfs2_locking_ast()
1220 static int ocfs2_lock_create(struct ocfs2_super *osb,  in ocfs2_lock_create()  argument
1245 	ret = ocfs2_dlm_lock(osb->cconn,  in ocfs2_lock_create()
1251 	lockres_clear_pending(lockres, gen, osb);  in ocfs2_lock_create()
1378 static int __ocfs2_cluster_lock(struct ocfs2_super *osb,  in __ocfs2_cluster_lock()  argument
1387 	int wait, catch_signals = !(osb->s_mount_opt & OCFS2_MOUNT_NOINTR);  in __ocfs2_cluster_lock()
1491 		ret = ocfs2_dlm_lock(osb->cconn,  in __ocfs2_cluster_lock()
1497 		lockres_clear_pending(lockres, gen, osb);  in __ocfs2_cluster_lock()
1533 		ocfs2_wake_downconvert_thread(osb);  in __ocfs2_cluster_lock()
1581 static inline int ocfs2_cluster_lock(struct ocfs2_super *osb,  in ocfs2_cluster_lock()  argument
1587 	return __ocfs2_cluster_lock(osb, lockres, level, lkm_flags, arg_flags,  in ocfs2_cluster_lock()
1592 static void __ocfs2_cluster_unlock(struct ocfs2_super *osb,  in __ocfs2_cluster_unlock()  argument
1601 	ocfs2_downconvert_on_unlock(osb, lockres);  in __ocfs2_cluster_unlock()
1609 static int ocfs2_create_new_lock(struct ocfs2_super *osb,  in ocfs2_create_new_lock()  argument
1623 	return ocfs2_lock_create(osb, lockres, level, lkm_flags);  in ocfs2_create_new_lock()
1635 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);  in ocfs2_create_new_inode_locks()  local
1650 	ret = ocfs2_create_new_lock(osb, &OCFS2_I(inode)->ip_rw_lockres, 1, 1);  in ocfs2_create_new_inode_locks()
1660 	ret = ocfs2_create_new_lock(osb, &OCFS2_I(inode)->ip_inode_lockres, 1, 0);  in ocfs2_create_new_inode_locks()
1666 	ret = ocfs2_create_new_lock(osb, &OCFS2_I(inode)->ip_open_lockres, 0, 0);  in ocfs2_create_new_inode_locks()
1680 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);  in ocfs2_rw_lock()  local
1688 	if (ocfs2_mount_local(osb))  in ocfs2_rw_lock()
1707 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);  in ocfs2_rw_unlock()  local
1713 	if (!ocfs2_mount_local(osb))  in ocfs2_rw_unlock()
1724 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);  in ocfs2_open_lock()  local
1731 	if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb))  in ocfs2_open_lock()
1749 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);  in ocfs2_try_open_lock()  local
1757 	if (ocfs2_is_hard_readonly(osb)) {  in ocfs2_try_open_lock()
1763 	if (ocfs2_mount_local(osb))  in ocfs2_try_open_lock()
1789 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);  in ocfs2_open_unlock()  local
1794 	if (ocfs2_mount_local(osb))  in ocfs2_open_unlock()
1812 	struct ocfs2_super *osb = ocfs2_get_lockres_osb(lockres);  in ocfs2_flock_handle_signal()  local
1821 		ret = ocfs2_prepare_cancel_convert(osb, lockres);  in ocfs2_flock_handle_signal()
1824 			ret = ocfs2_cancel_convert(osb, lockres);  in ocfs2_flock_handle_signal()
1883 	struct ocfs2_super *osb = OCFS2_SB(file->f_mapping->host->i_sb);  in ocfs2_file_lock()  local
1906 		ret = ocfs2_lock_create(osb, lockres, DLM_LOCK_NL, 0);  in ocfs2_file_lock()
1928 	ret = ocfs2_dlm_lock(osb->cconn, level, &lockres->l_lksb, lkm_flags,  in ocfs2_file_lock()
1979 	struct ocfs2_super *osb = OCFS2_SB(file->f_mapping->host->i_sb);  in ocfs2_file_unlock()  local
2005 	ret = ocfs2_downconvert_lock(osb, lockres, DLM_LOCK_NL, 0, gen);  in ocfs2_file_unlock()
2016 static void ocfs2_downconvert_on_unlock(struct ocfs2_super *osb,  in ocfs2_downconvert_on_unlock()  argument
2040 		ocfs2_wake_downconvert_thread(osb);  in ocfs2_downconvert_on_unlock()
2219 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);  in ocfs2_inode_lock_update()  local
2221 	if (ocfs2_mount_local(osb))  in ocfs2_inode_lock_update()
2327 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);  in ocfs2_inode_lock_full_nested()  local
2340 	if (ocfs2_is_hard_readonly(osb)) {  in ocfs2_inode_lock_full_nested()
2346 	if (ocfs2_mount_local(osb))  in ocfs2_inode_lock_full_nested()
2350 		ocfs2_wait_for_recovery(osb);  in ocfs2_inode_lock_full_nested()
2358 	status = __ocfs2_cluster_lock(osb, lockres, level, dlm_flags,  in ocfs2_inode_lock_full_nested()
2374 		ocfs2_wait_for_recovery(osb);  in ocfs2_inode_lock_full_nested()
2507 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);  in ocfs2_inode_unlock()  local
2514 	    !ocfs2_mount_local(osb))  in ocfs2_inode_unlock()
2518 int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno)  in ocfs2_orphan_scan_lock()  argument
2524 	if (ocfs2_is_hard_readonly(osb))  in ocfs2_orphan_scan_lock()
2527 	if (ocfs2_mount_local(osb))  in ocfs2_orphan_scan_lock()
2530 	lockres = &osb->osb_orphan_scan.os_lockres;  in ocfs2_orphan_scan_lock()
2531 	status = ocfs2_cluster_lock(osb, lockres, DLM_LOCK_EX, 0, 0);  in ocfs2_orphan_scan_lock()
2540 		*seqno = osb->osb_orphan_scan.os_seqno + 1;  in ocfs2_orphan_scan_lock()
2545 void ocfs2_orphan_scan_unlock(struct ocfs2_super *osb, u32 seqno)  in ocfs2_orphan_scan_unlock()  argument
2550 	if (!ocfs2_is_hard_readonly(osb) && !ocfs2_mount_local(osb)) {  in ocfs2_orphan_scan_unlock()
2551 		lockres = &osb->osb_orphan_scan.os_lockres;  in ocfs2_orphan_scan_unlock()
2555 		ocfs2_cluster_unlock(osb, lockres, DLM_LOCK_EX);  in ocfs2_orphan_scan_unlock()
2559 int ocfs2_super_lock(struct ocfs2_super *osb,  in ocfs2_super_lock()  argument
2564 	struct ocfs2_lock_res *lockres = &osb->osb_super_lockres;  in ocfs2_super_lock()
2566 	if (ocfs2_is_hard_readonly(osb))  in ocfs2_super_lock()
2569 	if (ocfs2_mount_local(osb))  in ocfs2_super_lock()
2572 	status = ocfs2_cluster_lock(osb, lockres, level, 0, 0);  in ocfs2_super_lock()
2584 		status = ocfs2_refresh_slot_info(osb);  in ocfs2_super_lock()
2589 			ocfs2_cluster_unlock(osb, lockres, level);  in ocfs2_super_lock()
2598 void ocfs2_super_unlock(struct ocfs2_super *osb,  in ocfs2_super_unlock()  argument
2602 	struct ocfs2_lock_res *lockres = &osb->osb_super_lockres;  in ocfs2_super_unlock()
2604 	if (!ocfs2_mount_local(osb))  in ocfs2_super_unlock()
2605 		ocfs2_cluster_unlock(osb, lockres, level);  in ocfs2_super_unlock()
2608 int ocfs2_rename_lock(struct ocfs2_super *osb)  in ocfs2_rename_lock()  argument
2611 	struct ocfs2_lock_res *lockres = &osb->osb_rename_lockres;  in ocfs2_rename_lock()
2613 	if (ocfs2_is_hard_readonly(osb))  in ocfs2_rename_lock()
2616 	if (ocfs2_mount_local(osb))  in ocfs2_rename_lock()
2619 	status = ocfs2_cluster_lock(osb, lockres, DLM_LOCK_EX, 0, 0);  in ocfs2_rename_lock()
2626 void ocfs2_rename_unlock(struct ocfs2_super *osb)  in ocfs2_rename_unlock()  argument
2628 	struct ocfs2_lock_res *lockres = &osb->osb_rename_lockres;  in ocfs2_rename_unlock()
2630 	if (!ocfs2_mount_local(osb))  in ocfs2_rename_unlock()
2631 		ocfs2_cluster_unlock(osb, lockres, DLM_LOCK_EX);  in ocfs2_rename_unlock()
2634 int ocfs2_nfs_sync_lock(struct ocfs2_super *osb, int ex)  in ocfs2_nfs_sync_lock()  argument
2637 	struct ocfs2_lock_res *lockres = &osb->osb_nfs_sync_lockres;  in ocfs2_nfs_sync_lock()
2639 	if (ocfs2_is_hard_readonly(osb))  in ocfs2_nfs_sync_lock()
2642 	if (ocfs2_mount_local(osb))  in ocfs2_nfs_sync_lock()
2645 	status = ocfs2_cluster_lock(osb, lockres, ex ? LKM_EXMODE : LKM_PRMODE,  in ocfs2_nfs_sync_lock()
2653 void ocfs2_nfs_sync_unlock(struct ocfs2_super *osb, int ex)  in ocfs2_nfs_sync_unlock()  argument
2655 	struct ocfs2_lock_res *lockres = &osb->osb_nfs_sync_lockres;  in ocfs2_nfs_sync_unlock()
2657 	if (!ocfs2_mount_local(osb))  in ocfs2_nfs_sync_unlock()
2658 		ocfs2_cluster_unlock(osb, lockres,  in ocfs2_nfs_sync_unlock()
2667 	struct ocfs2_super *osb = OCFS2_SB(dentry->d_sb);  in ocfs2_dentry_lock()  local
2671 	if (ocfs2_is_hard_readonly(osb)) {  in ocfs2_dentry_lock()
2677 	if (ocfs2_mount_local(osb))  in ocfs2_dentry_lock()
2680 	ret = ocfs2_cluster_lock(osb, &dl->dl_lockres, level, 0, 0);  in ocfs2_dentry_lock()
2691 	struct ocfs2_super *osb = OCFS2_SB(dentry->d_sb);  in ocfs2_dentry_unlock()  local
2693 	if (!ocfs2_is_hard_readonly(osb) && !ocfs2_mount_local(osb))  in ocfs2_dentry_unlock()
2694 		ocfs2_cluster_unlock(osb, &dl->dl_lockres, level);  in ocfs2_dentry_unlock()
2932 	struct ocfs2_super *osb;  in ocfs2_dlm_debug_open()  local
2940 	osb = inode->i_private;  in ocfs2_dlm_debug_open()
2941 	ocfs2_get_dlm_debug(osb->osb_dlm_debug);  in ocfs2_dlm_debug_open()
2942 	priv->p_dlm_debug = osb->osb_dlm_debug;  in ocfs2_dlm_debug_open()
2958 static int ocfs2_dlm_init_debug(struct ocfs2_super *osb)  in ocfs2_dlm_init_debug()  argument
2961 	struct ocfs2_dlm_debug *dlm_debug = osb->osb_dlm_debug;  in ocfs2_dlm_init_debug()
2965 							 osb->osb_debug_root,  in ocfs2_dlm_init_debug()
2966 							 osb,  in ocfs2_dlm_init_debug()
2980 static void ocfs2_dlm_shutdown_debug(struct ocfs2_super *osb)  in ocfs2_dlm_shutdown_debug()  argument
2982 	struct ocfs2_dlm_debug *dlm_debug = osb->osb_dlm_debug;  in ocfs2_dlm_shutdown_debug()
2990 int ocfs2_dlm_init(struct ocfs2_super *osb)  in ocfs2_dlm_init()  argument
2995 	if (ocfs2_mount_local(osb)) {  in ocfs2_dlm_init()
2996 		osb->node_num = 0;  in ocfs2_dlm_init()
3000 	status = ocfs2_dlm_init_debug(osb);  in ocfs2_dlm_init()
3007 	osb->dc_task = kthread_run(ocfs2_downconvert_thread, osb, "ocfs2dc-%s",  in ocfs2_dlm_init()
3008 			osb->uuid_str);  in ocfs2_dlm_init()
3009 	if (IS_ERR(osb->dc_task)) {  in ocfs2_dlm_init()
3010 		status = PTR_ERR(osb->dc_task);  in ocfs2_dlm_init()
3011 		osb->dc_task = NULL;  in ocfs2_dlm_init()
3017 	status = ocfs2_cluster_connect(osb->osb_cluster_stack,  in ocfs2_dlm_init()
3018 				       osb->osb_cluster_name,  in ocfs2_dlm_init()
3019 				       strlen(osb->osb_cluster_name),  in ocfs2_dlm_init()
3020 				       osb->uuid_str,  in ocfs2_dlm_init()
3021 				       strlen(osb->uuid_str),  in ocfs2_dlm_init()
3022 				       &lproto, ocfs2_do_node_down, osb,  in ocfs2_dlm_init()
3029 	status = ocfs2_cluster_this_node(conn, &osb->node_num);  in ocfs2_dlm_init()
3039 	ocfs2_super_lock_res_init(&osb->osb_super_lockres, osb);  in ocfs2_dlm_init()
3040 	ocfs2_rename_lock_res_init(&osb->osb_rename_lockres, osb);  in ocfs2_dlm_init()
3041 	ocfs2_nfs_sync_lock_res_init(&osb->osb_nfs_sync_lockres, osb);  in ocfs2_dlm_init()
3042 	ocfs2_orphan_scan_lock_res_init(&osb->osb_orphan_scan.os_lockres, osb);  in ocfs2_dlm_init()
3044 	osb->cconn = conn;  in ocfs2_dlm_init()
3047 		ocfs2_dlm_shutdown_debug(osb);  in ocfs2_dlm_init()
3048 		if (osb->dc_task)  in ocfs2_dlm_init()
3049 			kthread_stop(osb->dc_task);  in ocfs2_dlm_init()
3055 void ocfs2_dlm_shutdown(struct ocfs2_super *osb,  in ocfs2_dlm_shutdown()  argument
3058 	ocfs2_drop_osb_locks(osb);  in ocfs2_dlm_shutdown()
3066 	if (osb->dc_task) {  in ocfs2_dlm_shutdown()
3067 		kthread_stop(osb->dc_task);  in ocfs2_dlm_shutdown()
3068 		osb->dc_task = NULL;  in ocfs2_dlm_shutdown()
3071 	ocfs2_lock_res_free(&osb->osb_super_lockres);  in ocfs2_dlm_shutdown()
3072 	ocfs2_lock_res_free(&osb->osb_rename_lockres);  in ocfs2_dlm_shutdown()
3073 	ocfs2_lock_res_free(&osb->osb_nfs_sync_lockres);  in ocfs2_dlm_shutdown()
3074 	ocfs2_lock_res_free(&osb->osb_orphan_scan.os_lockres);  in ocfs2_dlm_shutdown()
3076 	ocfs2_cluster_disconnect(osb->cconn, hangup_pending);  in ocfs2_dlm_shutdown()
3077 	osb->cconn = NULL;  in ocfs2_dlm_shutdown()
3079 	ocfs2_dlm_shutdown_debug(osb);  in ocfs2_dlm_shutdown()
3082 static int ocfs2_drop_lock(struct ocfs2_super *osb,  in ocfs2_drop_lock()  argument
3149 	ret = ocfs2_dlm_unlock(osb->cconn, &lockres->l_lksb, lkm_flags);  in ocfs2_drop_lock()
3164 static void ocfs2_process_blocked_lock(struct ocfs2_super *osb,
3173 void ocfs2_mark_lockres_freeing(struct ocfs2_super *osb,  in ocfs2_mark_lockres_freeing()  argument
3184 	if (lockres->l_flags & OCFS2_LOCK_QUEUED && current == osb->dc_task) {  in ocfs2_mark_lockres_freeing()
3203 		spin_lock_irqsave(&osb->dc_task_lock, flags2);  in ocfs2_mark_lockres_freeing()
3205 		osb->blocked_lock_count--;  in ocfs2_mark_lockres_freeing()
3206 		spin_unlock_irqrestore(&osb->dc_task_lock, flags2);  in ocfs2_mark_lockres_freeing()
3215 		ocfs2_process_blocked_lock(osb, lockres);  in ocfs2_mark_lockres_freeing()
3233 void ocfs2_simple_drop_lockres(struct ocfs2_super *osb,  in ocfs2_simple_drop_lockres()  argument
3238 	ocfs2_mark_lockres_freeing(osb, lockres);  in ocfs2_simple_drop_lockres()
3239 	ret = ocfs2_drop_lock(osb, lockres);  in ocfs2_simple_drop_lockres()
3244 static void ocfs2_drop_osb_locks(struct ocfs2_super *osb)  in ocfs2_drop_osb_locks()  argument
3246 	ocfs2_simple_drop_lockres(osb, &osb->osb_super_lockres);  in ocfs2_drop_osb_locks()
3247 	ocfs2_simple_drop_lockres(osb, &osb->osb_rename_lockres);  in ocfs2_drop_osb_locks()
3248 	ocfs2_simple_drop_lockres(osb, &osb->osb_nfs_sync_lockres);  in ocfs2_drop_osb_locks()
3249 	ocfs2_simple_drop_lockres(osb, &osb->osb_orphan_scan.os_lockres);  in ocfs2_drop_osb_locks()
3312 static int ocfs2_downconvert_lock(struct ocfs2_super *osb,  in ocfs2_downconvert_lock()  argument
3327 	ret = ocfs2_dlm_lock(osb->cconn,  in ocfs2_downconvert_lock()
3333 	lockres_clear_pending(lockres, generation, osb);  in ocfs2_downconvert_lock()
3346 static int ocfs2_prepare_cancel_convert(struct ocfs2_super *osb,  in ocfs2_prepare_cancel_convert()  argument
3375 static int ocfs2_cancel_convert(struct ocfs2_super *osb,  in ocfs2_cancel_convert()  argument
3380 	ret = ocfs2_dlm_unlock(osb->cconn, &lockres->l_lksb,  in ocfs2_cancel_convert()
3392 static int ocfs2_unblock_lock(struct ocfs2_super *osb,  in ocfs2_unblock_lock()  argument
3448 		ret = ocfs2_prepare_cancel_convert(osb, lockres);  in ocfs2_unblock_lock()
3451 			ret = ocfs2_cancel_convert(osb, lockres);  in ocfs2_unblock_lock()
3574 	ret = ocfs2_downconvert_lock(osb, lockres, new_level, set_lvb,  in ocfs2_unblock_lock()
3674 static void ocfs2_dentry_post_unlock(struct ocfs2_super *osb,  in ocfs2_dentry_post_unlock()  argument
3678 	ocfs2_dentry_lock_put(osb, dl);  in ocfs2_dentry_post_unlock()
3833 	struct ocfs2_super *osb = OCFS2_SB(oinfo->dqi_gi.dqi_sb);  in ocfs2_qinfo_unlock()  local
3836 	if (!ocfs2_is_hard_readonly(osb) && !ocfs2_mount_local(osb))  in ocfs2_qinfo_unlock()
3837 		ocfs2_cluster_unlock(osb, lockres, level);  in ocfs2_qinfo_unlock()
3888 	struct ocfs2_super *osb = OCFS2_SB(oinfo->dqi_gi.dqi_sb);  in ocfs2_qinfo_lock()  local
3893 	if (ocfs2_is_hard_readonly(osb)) {  in ocfs2_qinfo_lock()
3898 	if (ocfs2_mount_local(osb))  in ocfs2_qinfo_lock()
3901 	status = ocfs2_cluster_lock(osb, lockres, level, 0, 0);  in ocfs2_qinfo_lock()
3922 	struct ocfs2_super *osb = lockres->l_priv;  in ocfs2_refcount_lock()  local
3925 	if (ocfs2_is_hard_readonly(osb))  in ocfs2_refcount_lock()
3928 	if (ocfs2_mount_local(osb))  in ocfs2_refcount_lock()
3931 	status = ocfs2_cluster_lock(osb, lockres, level, 0, 0);  in ocfs2_refcount_lock()
3942 	struct ocfs2_super *osb = lockres->l_priv;  in ocfs2_refcount_unlock()  local
3944 	if (!ocfs2_mount_local(osb))  in ocfs2_refcount_unlock()
3945 		ocfs2_cluster_unlock(osb, lockres, level);  in ocfs2_refcount_unlock()
3948 static void ocfs2_process_blocked_lock(struct ocfs2_super *osb,  in ocfs2_process_blocked_lock()  argument
3974 	status = ocfs2_unblock_lock(osb, lockres, &ctl);  in ocfs2_process_blocked_lock()
3983 		ocfs2_schedule_blocked_lock(osb, lockres);  in ocfs2_process_blocked_lock()
3991 		lockres->l_ops->post_unlock(osb, lockres);  in ocfs2_process_blocked_lock()
3994 static void ocfs2_schedule_blocked_lock(struct ocfs2_super *osb,  in ocfs2_schedule_blocked_lock()  argument
4012 	spin_lock_irqsave(&osb->dc_task_lock, flags);  in ocfs2_schedule_blocked_lock()
4015 			      &osb->blocked_lock_list);  in ocfs2_schedule_blocked_lock()
4016 		osb->blocked_lock_count++;  in ocfs2_schedule_blocked_lock()
4018 	spin_unlock_irqrestore(&osb->dc_task_lock, flags);  in ocfs2_schedule_blocked_lock()
4021 static void ocfs2_downconvert_thread_do_work(struct ocfs2_super *osb)  in ocfs2_downconvert_thread_do_work()  argument
4027 	spin_lock_irqsave(&osb->dc_task_lock, flags);  in ocfs2_downconvert_thread_do_work()
4030 	osb->dc_work_sequence = osb->dc_wake_sequence;  in ocfs2_downconvert_thread_do_work()
4032 	processed = osb->blocked_lock_count;  in ocfs2_downconvert_thread_do_work()
4039 	while (processed && !list_empty(&osb->blocked_lock_list)) {  in ocfs2_downconvert_thread_do_work()
4040 		lockres = list_entry(osb->blocked_lock_list.next,  in ocfs2_downconvert_thread_do_work()
4043 		osb->blocked_lock_count--;  in ocfs2_downconvert_thread_do_work()
4044 		spin_unlock_irqrestore(&osb->dc_task_lock, flags);  in ocfs2_downconvert_thread_do_work()
4049 		ocfs2_process_blocked_lock(osb, lockres);  in ocfs2_downconvert_thread_do_work()
4051 		spin_lock_irqsave(&osb->dc_task_lock, flags);  in ocfs2_downconvert_thread_do_work()
4053 	spin_unlock_irqrestore(&osb->dc_task_lock, flags);  in ocfs2_downconvert_thread_do_work()
4056 static int ocfs2_downconvert_thread_lists_empty(struct ocfs2_super *osb)  in ocfs2_downconvert_thread_lists_empty()  argument
4061 	spin_lock_irqsave(&osb->dc_task_lock, flags);  in ocfs2_downconvert_thread_lists_empty()
4062 	if (list_empty(&osb->blocked_lock_list))  in ocfs2_downconvert_thread_lists_empty()
4065 	spin_unlock_irqrestore(&osb->dc_task_lock, flags);  in ocfs2_downconvert_thread_lists_empty()
4069 static int ocfs2_downconvert_thread_should_wake(struct ocfs2_super *osb)  in ocfs2_downconvert_thread_should_wake()  argument
4074 	spin_lock_irqsave(&osb->dc_task_lock, flags);  in ocfs2_downconvert_thread_should_wake()
4075 	if (osb->dc_work_sequence != osb->dc_wake_sequence)  in ocfs2_downconvert_thread_should_wake()
4077 	spin_unlock_irqrestore(&osb->dc_task_lock, flags);  in ocfs2_downconvert_thread_should_wake()
4085 	struct ocfs2_super *osb = arg;  in ocfs2_downconvert_thread()  local
4090 		ocfs2_downconvert_thread_lists_empty(osb))) {  in ocfs2_downconvert_thread()
4092 		wait_event_interruptible(osb->dc_event,  in ocfs2_downconvert_thread()
4093 					 ocfs2_downconvert_thread_should_wake(osb) ||  in ocfs2_downconvert_thread()
4098 		ocfs2_downconvert_thread_do_work(osb);  in ocfs2_downconvert_thread()
4101 	osb->dc_task = NULL;  in ocfs2_downconvert_thread()
4105 void ocfs2_wake_downconvert_thread(struct ocfs2_super *osb)  in ocfs2_wake_downconvert_thread()  argument
4109 	spin_lock_irqsave(&osb->dc_task_lock, flags);  in ocfs2_wake_downconvert_thread()
4112 	osb->dc_wake_sequence++;  in ocfs2_wake_downconvert_thread()
4113 	spin_unlock_irqrestore(&osb->dc_task_lock, flags);  in ocfs2_wake_downconvert_thread()
4114 	wake_up(&osb->dc_event);  in ocfs2_wake_downconvert_thread()