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Commit 800deef3 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Mark Fasheh
Browse files

[PATCH] ocfs2: use list_for_each_entry where benefical 



Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarMark Fasheh <mark.fasheh@oracle.com>
parent e6df3a66

fs/ocfs2/cluster/tcp.c

+4 −9
Original line number Diff line number Diff line
@@ -261,14 +261,12 @@ static void o2net_complete_nsw(struct o2net_node *nn, 


static void o2net_complete_nodes_nsw(struct o2net_node *nn)

{

	struct list_head *iter, *tmp;

	struct o2net_status_wait *nsw, *tmp;

	unsigned int num_kills = 0;

	struct o2net_status_wait *nsw;



	assert_spin_locked(&nn->nn_lock);



	list_for_each_safe(iter, tmp, &nn->nn_status_list) {

		nsw = list_entry(iter, struct o2net_status_wait, ns_node_item);

	list_for_each_entry_safe(nsw, tmp, &nn->nn_status_list, ns_node_item) {

		o2net_complete_nsw_locked(nn, nsw, O2NET_ERR_DIED, 0);

		num_kills++;

	}
@@ -764,13 +762,10 @@ EXPORT_SYMBOL_GPL(o2net_register_handler); 


void o2net_unregister_handler_list(struct list_head *list)

{

	struct list_head *pos, *n;

	struct o2net_msg_handler *nmh;

	struct o2net_msg_handler *nmh, *n;



	write_lock(&o2net_handler_lock);

	list_for_each_safe(pos, n, list) {

		nmh = list_entry(pos, struct o2net_msg_handler,

				 nh_unregister_item);

	list_for_each_entry_safe(nmh, n, list, nh_unregister_item) {

		mlog(ML_TCP, "unregistering handler func %p type %u key %08x\n",

		     nmh->nh_func, nmh->nh_msg_type, nmh->nh_key);

		rb_erase(&nmh->nh_node, &o2net_handler_tree);

fs/ocfs2/dlm/dlmmaster.c

+11 −29
Original line number Diff line number Diff line
@@ -192,25 +192,20 @@ static void dlm_print_one_mle(struct dlm_master_list_entry *mle) 
static void dlm_dump_mles(struct dlm_ctxt *dlm)

{

	struct dlm_master_list_entry *mle;

	struct list_head *iter;

	

	mlog(ML_NOTICE, "dumping all mles for domain %s:\n", dlm->name);

	spin_lock(&dlm->master_lock);

	list_for_each(iter, &dlm->master_list) {

		mle = list_entry(iter, struct dlm_master_list_entry, list);

	list_for_each_entry(mle, &dlm->master_list, list)

		dlm_print_one_mle(mle);

	}

	spin_unlock(&dlm->master_lock);

}



int dlm_dump_all_mles(const char __user *data, unsigned int len)

{

	struct list_head *iter;

	struct dlm_ctxt *dlm;



	spin_lock(&dlm_domain_lock);

	list_for_each(iter, &dlm_domains) {

		dlm = list_entry (iter, struct dlm_ctxt, list);

	list_for_each_entry(dlm, &dlm_domains, list) {

		mlog(ML_NOTICE, "found dlm: %p, name=%s\n", dlm, dlm->name);

		dlm_dump_mles(dlm);

	}
@@ -454,12 +449,10 @@ static int dlm_find_mle(struct dlm_ctxt *dlm, 
			char *name, unsigned int namelen)

{

	struct dlm_master_list_entry *tmpmle;

	struct list_head *iter;



	assert_spin_locked(&dlm->master_lock);



	list_for_each(iter, &dlm->master_list) {

		tmpmle = list_entry(iter, struct dlm_master_list_entry, list);

	list_for_each_entry(tmpmle, &dlm->master_list, list) {

		if (!dlm_mle_equal(dlm, tmpmle, name, namelen))

			continue;

		dlm_get_mle(tmpmle);
@@ -472,13 +465,10 @@ static int dlm_find_mle(struct dlm_ctxt *dlm, 
void dlm_hb_event_notify_attached(struct dlm_ctxt *dlm, int idx, int node_up)

{

	struct dlm_master_list_entry *mle;

	struct list_head *iter;



	assert_spin_locked(&dlm->spinlock);

	

	list_for_each(iter, &dlm->mle_hb_events) {

		mle = list_entry(iter, struct dlm_master_list_entry, 

				 hb_events);

	list_for_each_entry(mle, &dlm->mle_hb_events, hb_events) {

		if (node_up)

			dlm_mle_node_up(dlm, mle, NULL, idx);

		else
@@ -2434,7 +2424,7 @@ static int dlm_is_lockres_migrateable(struct dlm_ctxt *dlm, 
	int ret;

	int i;

	int count = 0;

	struct list_head *queue, *iter;

	struct list_head *queue;

	struct dlm_lock *lock;



	assert_spin_locked(&res->spinlock);
@@ -2453,8 +2443,7 @@ static int dlm_is_lockres_migrateable(struct dlm_ctxt *dlm, 
	ret = 0;

	queue = &res->granted;

	for (i = 0; i < 3; i++) {

		list_for_each(iter, queue) {

			lock = list_entry(iter, struct dlm_lock, list);

		list_for_each_entry(lock, queue, list) {

			++count;

			if (lock->ml.node == dlm->node_num) {

				mlog(0, "found a lock owned by this node still "
@@ -2923,18 +2912,16 @@ static int dlm_mark_lockres_migrating(struct dlm_ctxt *dlm, 
static void dlm_remove_nonlocal_locks(struct dlm_ctxt *dlm,

				      struct dlm_lock_resource *res)

{

	struct list_head *iter, *iter2;

	struct list_head *queue = &res->granted;

	int i, bit;

	struct dlm_lock *lock;

	struct dlm_lock *lock, *next;



	assert_spin_locked(&res->spinlock);



	BUG_ON(res->owner == dlm->node_num);



	for (i=0; i<3; i++) {

		list_for_each_safe(iter, iter2, queue) {

			lock = list_entry (iter, struct dlm_lock, list);

		list_for_each_entry_safe(lock, next, queue, list) {

			if (lock->ml.node != dlm->node_num) {

				mlog(0, "putting lock for node %u\n",

				     lock->ml.node);
@@ -2976,7 +2963,6 @@ static u8 dlm_pick_migration_target(struct dlm_ctxt *dlm, 
{

	int i;

	struct list_head *queue = &res->granted;

	struct list_head *iter;

	struct dlm_lock *lock;

	int nodenum;
@@ -2984,10 +2970,9 @@ static u8 dlm_pick_migration_target(struct dlm_ctxt *dlm, 


	spin_lock(&res->spinlock);

	for (i=0; i<3; i++) {

		list_for_each(iter, queue) {

		list_for_each_entry(lock, queue, list) {

			/* up to the caller to make sure this node

			 * is alive */

			lock = list_entry (iter, struct dlm_lock, list);

			if (lock->ml.node != dlm->node_num) {

				spin_unlock(&res->spinlock);

				return lock->ml.node;
@@ -3234,8 +3219,7 @@ static int dlm_add_migration_mle(struct dlm_ctxt *dlm, 


void dlm_clean_master_list(struct dlm_ctxt *dlm, u8 dead_node)

{

	struct list_head *iter, *iter2;

	struct dlm_master_list_entry *mle;

	struct dlm_master_list_entry *mle, *next;

	struct dlm_lock_resource *res;

	unsigned int hash;
@@ -3245,9 +3229,7 @@ void dlm_clean_master_list(struct dlm_ctxt *dlm, u8 dead_node) 


	/* clean the master list */

	spin_lock(&dlm->master_lock);

	list_for_each_safe(iter, iter2, &dlm->master_list) {

		mle = list_entry(iter, struct dlm_master_list_entry, list);



	list_for_each_entry_safe(mle, next, &dlm->master_list, list) {

		BUG_ON(mle->type != DLM_MLE_BLOCK &&

		       mle->type != DLM_MLE_MASTER &&

		       mle->type != DLM_MLE_MIGRATION);

fs/ocfs2/dlm/dlmrecovery.c

+25 −52
Original line number Diff line number Diff line
@@ -158,8 +158,7 @@ void dlm_dispatch_work(struct work_struct *work) 
	struct dlm_ctxt *dlm =

		container_of(work, struct dlm_ctxt, dispatched_work);

	LIST_HEAD(tmp_list);

	struct list_head *iter, *iter2;

	struct dlm_work_item *item;

	struct dlm_work_item *item, *next;

	dlm_workfunc_t *workfunc;

	int tot=0;
@@ -167,13 +166,12 @@ void dlm_dispatch_work(struct work_struct *work) 
	list_splice_init(&dlm->work_list, &tmp_list);

	spin_unlock(&dlm->work_lock);



	list_for_each_safe(iter, iter2, &tmp_list) {

	list_for_each_entry(item, &tmp_list, list) {

		tot++;

	}

	mlog(0, "%s: work thread has %d work items\n", dlm->name, tot);



	list_for_each_safe(iter, iter2, &tmp_list) {

		item = list_entry(iter, struct dlm_work_item, list);

	list_for_each_entry_safe(item, next, &tmp_list, list) {

		workfunc = item->func;

		list_del_init(&item->list);
@@ -549,7 +547,6 @@ static int dlm_remaster_locks(struct dlm_ctxt *dlm, u8 dead_node) 
{

	int status = 0;

	struct dlm_reco_node_data *ndata;

	struct list_head *iter;

	int all_nodes_done;

	int destroy = 0;

	int pass = 0;
@@ -567,8 +564,7 @@ static int dlm_remaster_locks(struct dlm_ctxt *dlm, u8 dead_node) 


	/* safe to access the node data list without a lock, since this

	 * process is the only one to change the list */

	list_for_each(iter, &dlm->reco.node_data) {

		ndata = list_entry (iter, struct dlm_reco_node_data, list);

	list_for_each_entry(ndata, &dlm->reco.node_data, list) {

		BUG_ON(ndata->state != DLM_RECO_NODE_DATA_INIT);

		ndata->state = DLM_RECO_NODE_DATA_REQUESTING;
@@ -655,9 +651,7 @@ static int dlm_remaster_locks(struct dlm_ctxt *dlm, u8 dead_node) 
		 * done, or if anyone died */

		all_nodes_done = 1;

		spin_lock(&dlm_reco_state_lock);

		list_for_each(iter, &dlm->reco.node_data) {

			ndata = list_entry (iter, struct dlm_reco_node_data, list);



		list_for_each_entry(ndata, &dlm->reco.node_data, list) {

			mlog(0, "checking recovery state of node %u\n",

			     ndata->node_num);

			switch (ndata->state) {
@@ -774,16 +768,14 @@ static int dlm_init_recovery_area(struct dlm_ctxt *dlm, u8 dead_node) 


static void dlm_destroy_recovery_area(struct dlm_ctxt *dlm, u8 dead_node)

{

	struct list_head *iter, *iter2;

	struct dlm_reco_node_data *ndata;

	struct dlm_reco_node_data *ndata, *next;

	LIST_HEAD(tmplist);



	spin_lock(&dlm_reco_state_lock);

	list_splice_init(&dlm->reco.node_data, &tmplist);

	spin_unlock(&dlm_reco_state_lock);



	list_for_each_safe(iter, iter2, &tmplist) {

		ndata = list_entry (iter, struct dlm_reco_node_data, list);

	list_for_each_entry_safe(ndata, next, &tmplist, list) {

		list_del_init(&ndata->list);

		kfree(ndata);

	}
@@ -876,7 +868,6 @@ static void dlm_request_all_locks_worker(struct dlm_work_item *item, void *data) 
	struct dlm_lock_resource *res;

	struct dlm_ctxt *dlm;

	LIST_HEAD(resources);

	struct list_head *iter;

	int ret;

	u8 dead_node, reco_master;

	int skip_all_done = 0;
@@ -920,8 +911,7 @@ static void dlm_request_all_locks_worker(struct dlm_work_item *item, void *data) 


	/* any errors returned will be due to the new_master dying,

	 * the dlm_reco_thread should detect this */

	list_for_each(iter, &resources) {

		res = list_entry (iter, struct dlm_lock_resource, recovering);

	list_for_each_entry(res, &resources, recovering) {

		ret = dlm_send_one_lockres(dlm, res, mres, reco_master,

				   	DLM_MRES_RECOVERY);

		if (ret < 0) {
@@ -983,7 +973,6 @@ int dlm_reco_data_done_handler(struct o2net_msg *msg, u32 len, void *data, 
{

	struct dlm_ctxt *dlm = data;

	struct dlm_reco_data_done *done = (struct dlm_reco_data_done *)msg->buf;

	struct list_head *iter;

	struct dlm_reco_node_data *ndata = NULL;

	int ret = -EINVAL;
@@ -1000,8 +989,7 @@ int dlm_reco_data_done_handler(struct o2net_msg *msg, u32 len, void *data, 
			dlm->reco.dead_node, done->node_idx, dlm->node_num);



	spin_lock(&dlm_reco_state_lock);

	list_for_each(iter, &dlm->reco.node_data) {

		ndata = list_entry (iter, struct dlm_reco_node_data, list);

	list_for_each_entry(ndata, &dlm->reco.node_data, list) {

		if (ndata->node_num != done->node_idx)

			continue;
@@ -1049,13 +1037,11 @@ static void dlm_move_reco_locks_to_list(struct dlm_ctxt *dlm, 
					struct list_head *list,

				       	u8 dead_node)

{

	struct dlm_lock_resource *res;

	struct list_head *iter, *iter2;

	struct dlm_lock_resource *res, *next;

	struct dlm_lock *lock;



	spin_lock(&dlm->spinlock);

	list_for_each_safe(iter, iter2, &dlm->reco.resources) {

		res = list_entry (iter, struct dlm_lock_resource, recovering);

	list_for_each_entry_safe(res, next, &dlm->reco.resources, recovering) {

		/* always prune any $RECOVERY entries for dead nodes,

		 * otherwise hangs can occur during later recovery */

		if (dlm_is_recovery_lock(res->lockname.name,
@@ -1252,7 +1238,7 @@ int dlm_send_one_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res, 
			 struct dlm_migratable_lockres *mres,

			 u8 send_to, u8 flags)

{

	struct list_head *queue, *iter;

	struct list_head *queue;

	int total_locks, i;

	u64 mig_cookie = 0;

	struct dlm_lock *lock;
@@ -1278,9 +1264,7 @@ int dlm_send_one_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res, 
	total_locks = 0;

	for (i=DLM_GRANTED_LIST; i<=DLM_BLOCKED_LIST; i++) {

		queue = dlm_list_idx_to_ptr(res, i);

		list_for_each(iter, queue) {

			lock = list_entry (iter, struct dlm_lock, list);



		list_for_each_entry(lock, queue, list) {

			/* add another lock. */

			total_locks++;

			if (!dlm_add_lock_to_array(lock, mres, i))
@@ -1717,7 +1701,6 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm, 
	struct dlm_lockstatus *lksb = NULL;

	int ret = 0;

	int i, j, bad;

	struct list_head *iter;

	struct dlm_lock *lock = NULL;

	u8 from = O2NM_MAX_NODES;

	unsigned int added = 0;
@@ -1755,8 +1738,7 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm, 
			spin_lock(&res->spinlock);

			for (j = DLM_GRANTED_LIST; j <= DLM_BLOCKED_LIST; j++) {

				tmpq = dlm_list_idx_to_ptr(res, j);

				list_for_each(iter, tmpq) {

					lock = list_entry (iter, struct dlm_lock, list);

				list_for_each_entry(lock, tmpq, list) {

					if (lock->ml.cookie != ml->cookie)

						lock = NULL;

					else
@@ -1930,8 +1912,8 @@ void dlm_move_lockres_to_recovery_list(struct dlm_ctxt *dlm, 
				       struct dlm_lock_resource *res)

{

	int i;

	struct list_head *queue, *iter, *iter2;

	struct dlm_lock *lock;

	struct list_head *queue;

	struct dlm_lock *lock, *next;



	res->state |= DLM_LOCK_RES_RECOVERING;

	if (!list_empty(&res->recovering)) {
@@ -1947,8 +1929,7 @@ void dlm_move_lockres_to_recovery_list(struct dlm_ctxt *dlm, 
	/* find any pending locks and put them back on proper list */

	for (i=DLM_BLOCKED_LIST; i>=DLM_GRANTED_LIST; i--) {

		queue = dlm_list_idx_to_ptr(res, i);

		list_for_each_safe(iter, iter2, queue) {

			lock = list_entry (iter, struct dlm_lock, list);

		list_for_each_entry_safe(lock, next, queue, list) {

			dlm_lock_get(lock);

			if (lock->convert_pending) {

				/* move converting lock back to granted */
@@ -2013,18 +1994,15 @@ static void dlm_finish_local_lockres_recovery(struct dlm_ctxt *dlm, 
					      u8 dead_node, u8 new_master)

{

	int i;

	struct list_head *iter, *iter2;

	struct hlist_node *hash_iter;

	struct hlist_head *bucket;



	struct dlm_lock_resource *res;

	struct dlm_lock_resource *res, *next;



	mlog_entry_void();



	assert_spin_locked(&dlm->spinlock);



	list_for_each_safe(iter, iter2, &dlm->reco.resources) {

		res = list_entry (iter, struct dlm_lock_resource, recovering);

	list_for_each_entry_safe(res, next, &dlm->reco.resources, recovering) {

		if (res->owner == dead_node) {

			list_del_init(&res->recovering);

			spin_lock(&res->spinlock);
@@ -2099,7 +2077,7 @@ static inline int dlm_lvb_needs_invalidation(struct dlm_lock *lock, int local) 
static void dlm_revalidate_lvb(struct dlm_ctxt *dlm,

			       struct dlm_lock_resource *res, u8 dead_node)

{

	struct list_head *iter, *queue;

	struct list_head *queue;

	struct dlm_lock *lock;

	int blank_lvb = 0, local = 0;

	int i;
@@ -2121,8 +2099,7 @@ static void dlm_revalidate_lvb(struct dlm_ctxt *dlm, 


	for (i=DLM_GRANTED_LIST; i<=DLM_CONVERTING_LIST; i++) {

		queue = dlm_list_idx_to_ptr(res, i);

		list_for_each(iter, queue) {

			lock = list_entry (iter, struct dlm_lock, list);

		list_for_each_entry(lock, queue, list) {

			if (lock->ml.node == search_node) {

				if (dlm_lvb_needs_invalidation(lock, local)) {

					/* zero the lksb lvb and lockres lvb */
@@ -2143,8 +2120,7 @@ static void dlm_revalidate_lvb(struct dlm_ctxt *dlm, 
static void dlm_free_dead_locks(struct dlm_ctxt *dlm,

				struct dlm_lock_resource *res, u8 dead_node)

{

	struct list_head *iter, *tmpiter;

	struct dlm_lock *lock;

	struct dlm_lock *lock, *next;

	unsigned int freed = 0;



	/* this node is the lockres master:
@@ -2155,24 +2131,21 @@ static void dlm_free_dead_locks(struct dlm_ctxt *dlm, 
	assert_spin_locked(&res->spinlock);



	/* TODO: check pending_asts, pending_basts here */

	list_for_each_safe(iter, tmpiter, &res->granted) {

		lock = list_entry (iter, struct dlm_lock, list);

	list_for_each_entry_safe(lock, next, &res->granted, list) {

		if (lock->ml.node == dead_node) {

			list_del_init(&lock->list);

			dlm_lock_put(lock);

			freed++;

		}

	}

	list_for_each_safe(iter, tmpiter, &res->converting) {

		lock = list_entry (iter, struct dlm_lock, list);

	list_for_each_entry_safe(lock, next, &res->converting, list) {

		if (lock->ml.node == dead_node) {

			list_del_init(&lock->list);

			dlm_lock_put(lock);

			freed++;

		}

	}

	list_for_each_safe(iter, tmpiter, &res->blocked) {

		lock = list_entry (iter, struct dlm_lock, list);

	list_for_each_entry_safe(lock, next, &res->blocked, list) {

		if (lock->ml.node == dead_node) {

			list_del_init(&lock->list);

			dlm_lock_put(lock);

fs/ocfs2/dlmglue.c

+2 −4
Original line number Diff line number Diff line
@@ -600,15 +600,13 @@ static inline int ocfs2_highest_compat_lock_level(int level) 
static void lockres_set_flags(struct ocfs2_lock_res *lockres,

			      unsigned long newflags)

{

	struct list_head *pos, *tmp;

	struct ocfs2_mask_waiter *mw;

	struct ocfs2_mask_waiter *mw, *tmp;



 	assert_spin_locked(&lockres->l_lock);



	lockres->l_flags = newflags;



	list_for_each_safe(pos, tmp, &lockres->l_mask_waiters) {

		mw = list_entry(pos, struct ocfs2_mask_waiter, mw_item);

	list_for_each_entry_safe(mw, tmp, &lockres->l_mask_waiters, mw_item) {

		if ((lockres->l_flags & mw->mw_mask) != mw->mw_goal)

			continue;

fs/ocfs2/extent_map.c

+3 −7
Original line number Diff line number Diff line
@@ -109,17 +109,14 @@ static int ocfs2_extent_map_lookup(struct inode *inode, unsigned int cpos, 
 */

void ocfs2_extent_map_trunc(struct inode *inode, unsigned int cpos)

{

	struct list_head *p, *n;

	struct ocfs2_extent_map_item *emi;

	struct ocfs2_extent_map_item *emi, *n;

	struct ocfs2_inode_info *oi = OCFS2_I(inode);

	struct ocfs2_extent_map *em = &oi->ip_extent_map;

	LIST_HEAD(tmp_list);

	unsigned int range;



	spin_lock(&oi->ip_lock);

	list_for_each_safe(p, n, &em->em_list) {

		emi = list_entry(p, struct ocfs2_extent_map_item, ei_list);



	list_for_each_entry_safe(emi, n, &em->em_list, ei_list) {

		if (emi->ei_cpos >= cpos) {

			/* Full truncate of this record. */

			list_move(&emi->ei_list, &tmp_list);
@@ -136,8 +133,7 @@ void ocfs2_extent_map_trunc(struct inode *inode, unsigned int cpos) 
	}

	spin_unlock(&oi->ip_lock);



	list_for_each_safe(p, n, &tmp_list) {

		emi = list_entry(p, struct ocfs2_extent_map_item, ei_list);

	list_for_each_entry_safe(emi, n, &tmp_list, ei_list) {

		list_del(&emi->ei_list);

		kfree(emi);

	}