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Commit a5f28ae4 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2 

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
  ocfs2/cluster: Make o2net connect messages KERN_NOTICE
  ocfs2/dlm: Fix printing of lockname
  ocfs2: Fix contiguousness check in ocfs2_try_to_merge_extent_map()
  ocfs2/dlm: Remove BUG_ON in dlm recovery when freeing locks of a dead node
  ocfs2: Plugs race between the dc thread and an unlock ast message
  ocfs2: Remove overzealous BUG_ON during blocked lock processing
  ocfs2: Do not downconvert if the lock level is already compatible
  ocfs2: Prevent a livelock in dlmglue
  ocfs2: Fix setting of OCFS2_LOCK_BLOCKED during bast
  ocfs2: Use compat_ptr in reflink_arguments.
  ocfs2/dlm: Handle EAGAIN for compatibility - v2
  ocfs2: Add parenthesis to wrap the check for O_DIRECT.
  ocfs2: Only bug out when page size is larger than cluster size.
  ocfs2: Fix memory overflow in cow_by_page.
  ocfs2/dlm: Print more messages during lock migration
  ocfs2/dlm: Ignore LVBs of locks in the Blocked list
  ocfs2/trivial: Remove trailing whitespaces
  ocfs2: fix a misleading variable name
  ocfs2: Sync max_inline_data_with_xattr from tools.
  ocfs2: Fix refcnt leak on ocfs2_fast_follow_link() error path
parents 8defcaa6 6efd8066

fs/ocfs2/cluster/tcp.c

+5 −5
Original line number Diff line number Diff line
@@ -485,7 +485,7 @@ static void o2net_set_nn_state(struct o2net_node *nn, 
	}



	if (was_valid && !valid) {

		printk(KERN_INFO "o2net: no longer connected to "

		printk(KERN_NOTICE "o2net: no longer connected to "

		       SC_NODEF_FMT "\n", SC_NODEF_ARGS(old_sc));

		o2net_complete_nodes_nsw(nn);

	}
@@ -493,7 +493,7 @@ static void o2net_set_nn_state(struct o2net_node *nn, 
	if (!was_valid && valid) {

		o2quo_conn_up(o2net_num_from_nn(nn));

		cancel_delayed_work(&nn->nn_connect_expired);

		printk(KERN_INFO "o2net: %s " SC_NODEF_FMT "\n",

		printk(KERN_NOTICE "o2net: %s " SC_NODEF_FMT "\n",

		       o2nm_this_node() > sc->sc_node->nd_num ?

		       		"connected to" : "accepted connection from",

		       SC_NODEF_ARGS(sc));
@@ -1476,7 +1476,7 @@ static void o2net_idle_timer(unsigned long data) 


	do_gettimeofday(&now);



	printk(KERN_INFO "o2net: connection to " SC_NODEF_FMT " has been idle for %u.%u "

	printk(KERN_NOTICE "o2net: connection to " SC_NODEF_FMT " has been idle for %u.%u "

	     "seconds, shutting it down.\n", SC_NODEF_ARGS(sc),

		     o2net_idle_timeout() / 1000,

		     o2net_idle_timeout() % 1000);

fs/ocfs2/dlm/dlmdebug.c

+1 −1
Original line number Diff line number Diff line
@@ -102,7 +102,7 @@ void __dlm_print_one_lock_resource(struct dlm_lock_resource *res) 
	assert_spin_locked(&res->spinlock);



	stringify_lockname(res->lockname.name, res->lockname.len,

			   buf, sizeof(buf) - 1);

			   buf, sizeof(buf));

	printk("lockres: %s, owner=%u, state=%u\n",

	       buf, res->owner, res->state);

	printk("  last used: %lu, refcnt: %u, on purge list: %s\n",

fs/ocfs2/dlm/dlmrecovery.c

+104 −43
Original line number Diff line number Diff line
@@ -1164,6 +1164,39 @@ static void dlm_init_migratable_lockres(struct dlm_migratable_lockres *mres, 
	mres->master = master;

}



static void dlm_prepare_lvb_for_migration(struct dlm_lock *lock,

					  struct dlm_migratable_lockres *mres,

					  int queue)

{

	if (!lock->lksb)

	       return;



	/* Ignore lvb in all locks in the blocked list */

	if (queue == DLM_BLOCKED_LIST)

		return;



	/* Only consider lvbs in locks with granted EX or PR lock levels */

	if (lock->ml.type != LKM_EXMODE && lock->ml.type != LKM_PRMODE)

		return;



	if (dlm_lvb_is_empty(mres->lvb)) {

		memcpy(mres->lvb, lock->lksb->lvb, DLM_LVB_LEN);

		return;

	}



	/* Ensure the lvb copied for migration matches in other valid locks */

	if (!memcmp(mres->lvb, lock->lksb->lvb, DLM_LVB_LEN))

		return;



	mlog(ML_ERROR, "Mismatched lvb in lock cookie=%u:%llu, name=%.*s, "

	     "node=%u\n",

	     dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)),

	     dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)),

	     lock->lockres->lockname.len, lock->lockres->lockname.name,

	     lock->ml.node);

	dlm_print_one_lock_resource(lock->lockres);

	BUG();

}



/* returns 1 if this lock fills the network structure,

 * 0 otherwise */
@@ -1181,20 +1214,7 @@ static int dlm_add_lock_to_array(struct dlm_lock *lock, 
	ml->list = queue;

	if (lock->lksb) {

		ml->flags = lock->lksb->flags;

		/* send our current lvb */

		if (ml->type == LKM_EXMODE ||

		    ml->type == LKM_PRMODE) {

			/* if it is already set, this had better be a PR

			 * and it has to match */

			if (!dlm_lvb_is_empty(mres->lvb) &&

			    (ml->type == LKM_EXMODE ||

			     memcmp(mres->lvb, lock->lksb->lvb, DLM_LVB_LEN))) {

				mlog(ML_ERROR, "mismatched lvbs!\n");

				dlm_print_one_lock_resource(lock->lockres);

				BUG();

			}

			memcpy(mres->lvb, lock->lksb->lvb, DLM_LVB_LEN);

		}

		dlm_prepare_lvb_for_migration(lock, mres, queue);

	}

	ml->node = lock->ml.node;

	mres->num_locks++;
@@ -1730,6 +1750,7 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm, 
	struct dlm_lock *lock = NULL;

	u8 from = O2NM_MAX_NODES;

	unsigned int added = 0;

	__be64 c;



	mlog(0, "running %d locks for this lockres\n", mres->num_locks);

	for (i=0; i<mres->num_locks; i++) {
@@ -1777,19 +1798,48 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm, 
			/* lock is always created locally first, and

			 * destroyed locally last.  it must be on the list */

			if (!lock) {

				__be64 c = ml->cookie;

				mlog(ML_ERROR, "could not find local lock "

					       "with cookie %u:%llu!\n",

				c = ml->cookie;

				mlog(ML_ERROR, "Could not find local lock "

					       "with cookie %u:%llu, node %u, "

					       "list %u, flags 0x%x, type %d, "

					       "conv %d, highest blocked %d\n",

				     dlm_get_lock_cookie_node(be64_to_cpu(c)),

				     dlm_get_lock_cookie_seq(be64_to_cpu(c)));

				     dlm_get_lock_cookie_seq(be64_to_cpu(c)),

				     ml->node, ml->list, ml->flags, ml->type,

				     ml->convert_type, ml->highest_blocked);

				__dlm_print_one_lock_resource(res);

				BUG();

			}



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

				c = lock->ml.cookie;

				mlog(ML_ERROR, "Mismatched node# in lock "

				     "cookie %u:%llu, name %.*s, node %u\n",

				     dlm_get_lock_cookie_node(be64_to_cpu(c)),

				     dlm_get_lock_cookie_seq(be64_to_cpu(c)),

				     res->lockname.len, res->lockname.name,

				     lock->ml.node);

				c = ml->cookie;

				mlog(ML_ERROR, "Migrate lock cookie %u:%llu, "

				     "node %u, list %u, flags 0x%x, type %d, "

				     "conv %d, highest blocked %d\n",

				     dlm_get_lock_cookie_node(be64_to_cpu(c)),

				     dlm_get_lock_cookie_seq(be64_to_cpu(c)),

				     ml->node, ml->list, ml->flags, ml->type,

				     ml->convert_type, ml->highest_blocked);

				__dlm_print_one_lock_resource(res);

				BUG();

			}

			BUG_ON(lock->ml.node != ml->node);



			if (tmpq != queue) {

				mlog(0, "lock was on %u instead of %u for %.*s\n",

				     j, ml->list, res->lockname.len, res->lockname.name);

				c = ml->cookie;

				mlog(0, "Lock cookie %u:%llu was on list %u "

				     "instead of list %u for %.*s\n",

				     dlm_get_lock_cookie_node(be64_to_cpu(c)),

				     dlm_get_lock_cookie_seq(be64_to_cpu(c)),

				     j, ml->list, res->lockname.len,

				     res->lockname.name);

				__dlm_print_one_lock_resource(res);

				spin_unlock(&res->spinlock);

				continue;

			}
@@ -1886,7 +1936,7 @@ skip_lvb: 
		spin_lock(&res->spinlock);

		list_for_each_entry(lock, queue, list) {

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

				__be64 c = lock->ml.cookie;

				c = lock->ml.cookie;

				mlog(ML_ERROR, "%s:%.*s: %u:%llu: lock already "

				     "exists on this lockres!\n", dlm->name,

				     res->lockname.len, res->lockname.name,
@@ -2193,7 +2243,12 @@ static void dlm_free_dead_locks(struct dlm_ctxt *dlm, 
		mlog(0, "%s:%.*s: freed %u locks for dead node %u, "

		     "dropping ref from lockres\n", dlm->name,

		     res->lockname.len, res->lockname.name, freed, dead_node);

		BUG_ON(!test_bit(dead_node, res->refmap));

		if(!test_bit(dead_node, res->refmap)) {

			mlog(ML_ERROR, "%s:%.*s: freed %u locks for dead node %u, "

			     "but ref was not set\n", dlm->name,

			     res->lockname.len, res->lockname.name, freed, dead_node);

			__dlm_print_one_lock_resource(res);

		}

		dlm_lockres_clear_refmap_bit(dead_node, res);

	} else if (test_bit(dead_node, res->refmap)) {

		mlog(0, "%s:%.*s: dead node %u had a ref, but had "
@@ -2589,7 +2644,13 @@ retry: 
			     "begin reco msg (%d)\n", dlm->name, nodenum, ret);

			ret = 0;

		}

		if (ret == -EAGAIN) {



		/*

		 * Prior to commit aad1b15310b9bcd59fa81ab8f2b1513b59553ea8,

		 * dlm_begin_reco_handler() returned EAGAIN and not -EAGAIN.

		 * We are handling both for compatibility reasons.

		 */

		if (ret == -EAGAIN || ret == EAGAIN) {

			mlog(0, "%s: trying to start recovery of node "

			     "%u, but node %u is waiting for last recovery "

			     "to complete, backoff for a bit\n", dlm->name,

fs/ocfs2/dlmglue.c

+76 −9
Original line number Diff line number Diff line
@@ -875,6 +875,14 @@ static inline void ocfs2_generic_handle_convert_action(struct ocfs2_lock_res *lo 
		lockres_or_flags(lockres, OCFS2_LOCK_NEEDS_REFRESH);



	lockres->l_level = lockres->l_requested;



	/*

	 * We set the OCFS2_LOCK_UPCONVERT_FINISHING flag before clearing

	 * the OCFS2_LOCK_BUSY flag to prevent the dc thread from

	 * downconverting the lock before the upconvert has fully completed.

	 */

	lockres_or_flags(lockres, OCFS2_LOCK_UPCONVERT_FINISHING);



	lockres_clear_flags(lockres, OCFS2_LOCK_BUSY);



	mlog_exit_void();
@@ -907,8 +915,6 @@ static int ocfs2_generic_handle_bast(struct ocfs2_lock_res *lockres, 


	assert_spin_locked(&lockres->l_lock);



	lockres_or_flags(lockres, OCFS2_LOCK_BLOCKED);



	if (level > lockres->l_blocking) {

		/* only schedule a downconvert if we haven't already scheduled

		 * one that goes low enough to satisfy the level we're
@@ -921,6 +927,9 @@ static int ocfs2_generic_handle_bast(struct ocfs2_lock_res *lockres, 
		lockres->l_blocking = level;

	}



	if (needs_downconvert)

		lockres_or_flags(lockres, OCFS2_LOCK_BLOCKED);



	mlog_exit(needs_downconvert);

	return needs_downconvert;

}
@@ -1133,6 +1142,7 @@ static inline void ocfs2_recover_from_dlm_error(struct ocfs2_lock_res *lockres, 
	mlog_entry_void();

	spin_lock_irqsave(&lockres->l_lock, flags);

	lockres_clear_flags(lockres, OCFS2_LOCK_BUSY);

	lockres_clear_flags(lockres, OCFS2_LOCK_UPCONVERT_FINISHING);

	if (convert)

		lockres->l_action = OCFS2_AST_INVALID;

	else
@@ -1323,13 +1333,13 @@ static int __ocfs2_cluster_lock(struct ocfs2_super *osb, 
again:

	wait = 0;



	spin_lock_irqsave(&lockres->l_lock, flags);



	if (catch_signals && signal_pending(current)) {

		ret = -ERESTARTSYS;

		goto out;

		goto unlock;

	}



	spin_lock_irqsave(&lockres->l_lock, flags);



	mlog_bug_on_msg(lockres->l_flags & OCFS2_LOCK_FREEING,

			"Cluster lock called on freeing lockres %s! flags "

			"0x%lx\n", lockres->l_name, lockres->l_flags);
@@ -1346,6 +1356,25 @@ again: 
		goto unlock;

	}



	if (lockres->l_flags & OCFS2_LOCK_UPCONVERT_FINISHING) {

		/*

		 * We've upconverted. If the lock now has a level we can

		 * work with, we take it. If, however, the lock is not at the

		 * required level, we go thru the full cycle. One way this could

		 * happen is if a process requesting an upconvert to PR is

		 * closely followed by another requesting upconvert to an EX.

		 * If the process requesting EX lands here, we want it to

		 * continue attempting to upconvert and let the process

		 * requesting PR take the lock.

		 * If multiple processes request upconvert to PR, the first one

		 * here will take the lock. The others will have to go thru the

		 * OCFS2_LOCK_BLOCKED check to ensure that there is no pending

		 * downconvert request.

		 */

		if (level <= lockres->l_level)

			goto update_holders;

	}



	if (lockres->l_flags & OCFS2_LOCK_BLOCKED &&

	    !ocfs2_may_continue_on_blocked_lock(lockres, level)) {

		/* is the lock is currently blocked on behalf of
@@ -1416,11 +1445,14 @@ again: 
		goto again;

	}



update_holders:

	/* Ok, if we get here then we're good to go. */

	ocfs2_inc_holders(lockres, level);



	ret = 0;

unlock:

	lockres_clear_flags(lockres, OCFS2_LOCK_UPCONVERT_FINISHING);



	spin_unlock_irqrestore(&lockres->l_lock, flags);

out:

	/*
@@ -3352,6 +3384,7 @@ static int ocfs2_unblock_lock(struct ocfs2_super *osb, 
	unsigned long flags;

	int blocking;

	int new_level;

	int level;

	int ret = 0;

	int set_lvb = 0;

	unsigned int gen;
@@ -3360,9 +3393,17 @@ static int ocfs2_unblock_lock(struct ocfs2_super *osb, 


	spin_lock_irqsave(&lockres->l_lock, flags);



	BUG_ON(!(lockres->l_flags & OCFS2_LOCK_BLOCKED));



recheck:

	/*

	 * Is it still blocking? If not, we have no more work to do.

	 */

	if (!(lockres->l_flags & OCFS2_LOCK_BLOCKED)) {

		BUG_ON(lockres->l_blocking != DLM_LOCK_NL);

		spin_unlock_irqrestore(&lockres->l_lock, flags);

		ret = 0;

		goto leave;

	}



	if (lockres->l_flags & OCFS2_LOCK_BUSY) {

		/* XXX

		 * This is a *big* race.  The OCFS2_LOCK_PENDING flag
@@ -3401,6 +3442,31 @@ recheck: 
		goto leave;

	}



	/*

	 * This prevents livelocks. OCFS2_LOCK_UPCONVERT_FINISHING flag is

	 * set when the ast is received for an upconvert just before the

	 * OCFS2_LOCK_BUSY flag is cleared. Now if the fs received a bast

	 * on the heels of the ast, we want to delay the downconvert just

	 * enough to allow the up requestor to do its task. Because this

	 * lock is in the blocked queue, the lock will be downconverted

	 * as soon as the requestor is done with the lock.

	 */

	if (lockres->l_flags & OCFS2_LOCK_UPCONVERT_FINISHING)

		goto leave_requeue;



	/*

	 * How can we block and yet be at NL?  We were trying to upconvert

	 * from NL and got canceled.  The code comes back here, and now

	 * we notice and clear BLOCKING.

	 */

	if (lockres->l_level == DLM_LOCK_NL) {

		BUG_ON(lockres->l_ex_holders || lockres->l_ro_holders);

		lockres->l_blocking = DLM_LOCK_NL;

		lockres_clear_flags(lockres, OCFS2_LOCK_BLOCKED);

		spin_unlock_irqrestore(&lockres->l_lock, flags);

		goto leave;

	}



	/* if we're blocking an exclusive and we have *any* holders,

	 * then requeue. */

	if ((lockres->l_blocking == DLM_LOCK_EX)
@@ -3438,6 +3504,7 @@ recheck: 
	 * may sleep, so we save off a copy of what we're blocking as

	 * it may change while we're not holding the spin lock. */

	blocking = lockres->l_blocking;

	level = lockres->l_level;

	spin_unlock_irqrestore(&lockres->l_lock, flags);



	ctl->unblock_action = lockres->l_ops->downconvert_worker(lockres, blocking);
@@ -3446,7 +3513,7 @@ recheck: 
		goto leave;



	spin_lock_irqsave(&lockres->l_lock, flags);

	if (blocking != lockres->l_blocking) {

	if ((blocking != lockres->l_blocking) || (level != lockres->l_level)) {

		/* If this changed underneath us, then we can't drop

		 * it just yet. */

		goto recheck;

fs/ocfs2/extent_map.c

+1 −1
Original line number Diff line number Diff line
@@ -192,7 +192,7 @@ static int ocfs2_try_to_merge_extent_map(struct ocfs2_extent_map_item *emi, 
		emi->ei_clusters += ins->ei_clusters;

		return 1;

	} else if ((ins->ei_phys + ins->ei_clusters) == emi->ei_phys &&

		   (ins->ei_cpos + ins->ei_clusters) == emi->ei_phys &&

		   (ins->ei_cpos + ins->ei_clusters) == emi->ei_cpos &&

		   ins->ei_flags == emi->ei_flags) {

		emi->ei_phys = ins->ei_phys;

		emi->ei_cpos = ins->ei_cpos;