Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/k…

…ernel/git/mfasheh/ocfs2

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2:
  ocfs2: remove redundant NULL checks in ocfs2_direct_IO_get_blocks()
  ocfs2: clean up some osb fields
  ocfs2: fix init of uuid_net_key
  ocfs2: silence a debug print
  ocfs2: silence ENOENT during lookup of broken links
  ocfs2: Cleanup message prints
  ocfs2: silence -EEXIST from ocfs2_extent_map_insert/lookup
  [PATCH] fs/ocfs2/dlm/dlmrecovery.c: make dlm_lockres_master_requery() static
  ocfs2: warn the user on a dead timeout mismatch
  ocfs2: OCFS2_FS must depend on SYSFS
  ocfs2: Compile-time disabling of ocfs2 debugging output.
  configfs: Clear up a few extra spaces where there should be TABs.
  configfs: Release memory in configfs_example.

Documentation/filesystems/configfs/configfs_example.c

@@ -264,6 +264,15 @@ static struct config_item_type simple_child_type = {
 };
 
 
+struct simple_children {
+	struct config_group group;
+};
+
+static inline struct simple_children *to_simple_children(struct config_item *item)
+{
+	return item ? container_of(to_config_group(item), struct simple_children, group) : NULL;
+}
+
 static struct config_item *simple_children_make_item(struct config_group *group, const char *name)
 {
 	struct simple_child *simple_child;
@@ -304,7 +313,13 @@ static ssize_t simple_children_attr_show(struct config_item *item,
 "items have only one attribute that is readable and writeable.\n");
 }
 
+static void simple_children_release(struct config_item *item)
+{
+	kfree(to_simple_children(item));
+}
+
 static struct configfs_item_operations simple_children_item_ops = {
+	.release 	= simple_children_release,
 	.show_attribute	= simple_children_attr_show,
 };
 
@@ -345,10 +360,6 @@ static struct configfs_subsystem simple_children_subsys = {
  * children of its own.
  */
 
-struct simple_children {
-	struct config_group group;
-};
-
 static struct config_group *group_children_make_group(struct config_group *group, const char *name)
 {
 	struct simple_children *simple_children;

fs/Kconfig

@@ -326,7 +326,7 @@ source "fs/xfs/Kconfig"
 
 config OCFS2_FS
 	tristate "OCFS2 file system support (EXPERIMENTAL)"
-	depends on NET && EXPERIMENTAL
+	depends on NET && SYSFS && EXPERIMENTAL
 	select CONFIGFS_FS
 	select JBD
 	select CRC32
@@ -356,6 +356,16 @@ config OCFS2_FS
 	          - POSIX ACLs
 	          - readpages / writepages (not user visible)
 
+config OCFS2_DEBUG_MASKLOG
+	bool "OCFS2 logging support"
+	depends on OCFS2_FS
+	default y
+	help
+	  The ocfs2 filesystem has an extensive logging system.  The system
+	  allows selection of events to log via files in /sys/o2cb/logmask/.
+	  This option will enlarge your kernel, but it allows debugging of
+	  ocfs2 filesystem issues.
+
 config MINIX_FS
 	tristate "Minix fs support"
 	help

fs/configfs/dir.c

@@ -211,7 +211,7 @@ static void remove_dir(struct dentry * d)
 	struct configfs_dirent * sd;
 
 	sd = d->d_fsdata;
- 	list_del_init(&sd->s_sibling);
+	list_del_init(&sd->s_sibling);
 	configfs_put(sd);
 	if (d->d_inode)
 		simple_rmdir(parent->d_inode,d);
@@ -330,7 +330,7 @@ static int configfs_detach_prep(struct dentry *dentry)
 
 			ret = configfs_detach_prep(sd->s_dentry);
 			if (!ret)
-			       	continue;
+				continue;
 		} else
 			ret = -ENOTEMPTY;
 
@@ -931,7 +931,7 @@ int configfs_rename_dir(struct config_item * item, const char *new_name)
 
 	new_dentry = lookup_one_len(new_name, parent, strlen(new_name));
 	if (!IS_ERR(new_dentry)) {
-  		if (!new_dentry->d_inode) {
+		if (!new_dentry->d_inode) {
 			error = config_item_set_name(item, "%s", new_name);
 			if (!error) {
 				d_add(new_dentry, NULL);

fs/configfs/symlink.c

@@ -66,7 +66,7 @@ static void fill_item_path(struct config_item * item, char * buffer, int length)
 }
 
 static int create_link(struct config_item *parent_item,
- 		       struct config_item *item,
+		       struct config_item *item,
 		       struct dentry *dentry)
 {
 	struct configfs_dirent *target_sd = item->ci_dentry->d_fsdata;

fs/ocfs2/aops.c

@@ -558,16 +558,9 @@ static int ocfs2_direct_IO_get_blocks(struct inode *inode, sector_t iblock,
 	u64 vbo_max; /* file offset, max_blocks from iblock */
 	u64 p_blkno;
 	int contig_blocks;
-	unsigned char blocksize_bits;
+	unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits;
 	unsigned long max_blocks = bh_result->b_size >> inode->i_blkbits;
 
-	if (!inode || !bh_result) {
-		mlog(ML_ERROR, "inode or bh_result is null\n");
-		return -EIO;
-	}
-
-	blocksize_bits = inode->i_sb->s_blocksize_bits;
-
 	/* This function won't even be called if the request isn't all
 	 * nicely aligned and of the right size, so there's no need
 	 * for us to check any of that. */

fs/ocfs2/cluster/heartbeat.c

@@ -517,6 +517,7 @@ static inline void o2hb_prepare_block(struct o2hb_region *reg,
 	hb_block->hb_seq = cpu_to_le64(cputime);
 	hb_block->hb_node = node_num;
 	hb_block->hb_generation = cpu_to_le64(generation);
+	hb_block->hb_dead_ms = cpu_to_le32(o2hb_dead_threshold * O2HB_REGION_TIMEOUT_MS);
 
 	/* This step must always happen last! */
 	hb_block->hb_cksum = cpu_to_le32(o2hb_compute_block_crc_le(reg,
@@ -645,6 +646,8 @@ static int o2hb_check_slot(struct o2hb_region *reg,
 	struct o2nm_node *node;
 	struct o2hb_disk_heartbeat_block *hb_block = reg->hr_tmp_block;
 	u64 cputime;
+	unsigned int dead_ms = o2hb_dead_threshold * O2HB_REGION_TIMEOUT_MS;
+	unsigned int slot_dead_ms;
 
 	memcpy(hb_block, slot->ds_raw_block, reg->hr_block_bytes);
 
@@ -733,6 +736,23 @@ static int o2hb_check_slot(struct o2hb_region *reg,
 			      &o2hb_live_slots[slot->ds_node_num]);
 
 		slot->ds_equal_samples = 0;
+
+		/* We want to be sure that all nodes agree on the
+		 * number of milliseconds before a node will be
+		 * considered dead. The self-fencing timeout is
+		 * computed from this value, and a discrepancy might
+		 * result in heartbeat calling a node dead when it
+		 * hasn't self-fenced yet. */
+		slot_dead_ms = le32_to_cpu(hb_block->hb_dead_ms);
+		if (slot_dead_ms && slot_dead_ms != dead_ms) {
+			/* TODO: Perhaps we can fail the region here. */
+			mlog(ML_ERROR, "Node %d on device %s has a dead count "
+			     "of %u ms, but our count is %u ms.\n"
+			     "Please double check your configuration values "
+			     "for 'O2CB_HEARTBEAT_THRESHOLD'\n",
+			     slot->ds_node_num, reg->hr_dev_name, slot_dead_ms,
+			     dead_ms);
+		}
 		goto out;
 	}
 

fs/ocfs2/cluster/masklog.h

@@ -123,6 +123,17 @@
 #define MLOG_MASK_PREFIX 0
 #endif
 
+/*
+ * When logging is disabled, force the bit test to 0 for anything other
+ * than errors and notices, allowing gcc to remove the code completely.
+ * When enabled, allow all masks.
+ */
+#if defined(CONFIG_OCFS2_DEBUG_MASKLOG)
+#define ML_ALLOWED_BITS ~0
+#else
+#define ML_ALLOWED_BITS (ML_ERROR|ML_NOTICE)
+#endif
+
 #define MLOG_MAX_BITS 64
 
 struct mlog_bits {
@@ -187,7 +198,8 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits;
 
 #define mlog(mask, fmt, args...) do {					\
 	u64 __m = MLOG_MASK_PREFIX | (mask);				\
-	if (__mlog_test_u64(__m, mlog_and_bits) &&			\
+	if ((__m & ML_ALLOWED_BITS) &&					\
+	    __mlog_test_u64(__m, mlog_and_bits) &&			\
 	    !__mlog_test_u64(__m, mlog_not_bits)) {			\
 		if (__m & ML_ERROR)					\
 			__mlog_printk(KERN_ERR, "ERROR: "fmt , ##args);	\
@@ -204,6 +216,7 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits;
 		mlog(ML_ERROR, "status = %lld\n", (long long)_st);	\
 } while (0)
 
+#if defined(CONFIG_OCFS2_DEBUG_MASKLOG)
 #define mlog_entry(fmt, args...) do {					\
 	mlog(ML_ENTRY, "ENTRY:" fmt , ##args);				\
 } while (0)
@@ -247,6 +260,13 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits;
 #define mlog_exit_void() do {						\
 	mlog(ML_EXIT, "EXIT\n");					\
 } while (0)
+#else
+#define mlog_entry(...)  do { } while (0)
+#define mlog_entry_void(...)  do { } while (0)
+#define mlog_exit(...)  do { } while (0)
+#define mlog_exit_ptr(...)  do { } while (0)
+#define mlog_exit_void(...)  do { } while (0)
+#endif  /* defined(CONFIG_OCFS2_DEBUG_MASKLOG) */
 
 #define mlog_bug_on_msg(cond, fmt, args...) do {			\
 	if (cond) {							\

fs/ocfs2/cluster/ocfs2_heartbeat.h

@@ -32,6 +32,7 @@ struct o2hb_disk_heartbeat_block {
 	__u8  hb_pad1[3];
 	__le32 hb_cksum;
 	__le64 hb_generation;
+	__le32 hb_dead_ms;
 };
 
 #endif /* _OCFS2_HEARTBEAT_H */

fs/ocfs2/cluster/tcp.c

@@ -396,8 +396,8 @@ static void o2net_set_nn_state(struct o2net_node *nn,
 	}
 
 	if (was_valid && !valid) {
-		mlog(ML_NOTICE, "no longer connected to " SC_NODEF_FMT "\n",
-		     SC_NODEF_ARGS(old_sc));
+		printk(KERN_INFO "o2net: no longer connected to "
+		       SC_NODEF_FMT "\n", SC_NODEF_ARGS(old_sc));
 		o2net_complete_nodes_nsw(nn);
 	}
 
@@ -409,10 +409,10 @@ static void o2net_set_nn_state(struct o2net_node *nn,
 		 * the only way to start connecting again is to down
 		 * heartbeat and bring it back up. */
 		cancel_delayed_work(&nn->nn_connect_expired);
-		mlog(ML_NOTICE, "%s " SC_NODEF_FMT "\n", 
-		     o2nm_this_node() > sc->sc_node->nd_num ?
-		     	"connected to" : "accepted connection from",
-		     SC_NODEF_ARGS(sc));
+		printk(KERN_INFO "o2net: %s " SC_NODEF_FMT "\n",
+		       o2nm_this_node() > sc->sc_node->nd_num ?
+		       		"connected to" : "accepted connection from",
+		       SC_NODEF_ARGS(sc));
 	}
 
 	/* trigger the connecting worker func as long as we're not valid,
@@ -1280,7 +1280,7 @@ static void o2net_idle_timer(unsigned long data)
 
 	do_gettimeofday(&now);
 
-	mlog(ML_NOTICE, "connection to " SC_NODEF_FMT " has been idle for 10 "
+	printk(KERN_INFO "o2net: connection to " SC_NODEF_FMT " has been idle for 10 "
 	     "seconds, shutting it down.\n", SC_NODEF_ARGS(sc));
 	mlog(ML_NOTICE, "here are some times that might help debug the "
 	     "situation: (tmr %ld.%ld now %ld.%ld dr %ld.%ld adv "

fs/ocfs2/dir.c

@@ -213,11 +213,9 @@ int ocfs2_find_files_on_disk(const char *name,
 			     struct ocfs2_dir_entry **dirent)
 {
 	int status = -ENOENT;
-	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
 
-	mlog_entry("(osb=%p, parent=%llu, name='%.*s', blkno=%p, inode=%p)\n",
-		   osb, (unsigned long long)OCFS2_I(inode)->ip_blkno,
-		   namelen, name, blkno, inode);
+	mlog_entry("(name=%.*s, blkno=%p, inode=%p, dirent_bh=%p, dirent=%p)\n",
+		   namelen, name, blkno, inode, dirent_bh, dirent);
 
 	*dirent_bh = ocfs2_find_entry(name, namelen, inode, dirent);
 	if (!*dirent_bh || !*dirent) {

fs/ocfs2/dlm/dlmcommon.h

@@ -822,8 +822,6 @@ int dlm_begin_reco_handler(struct o2net_msg *msg, u32 len, void *data);
 int dlm_finalize_reco_handler(struct o2net_msg *msg, u32 len, void *data);
 int dlm_do_master_requery(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
 			  u8 nodenum, u8 *real_master);
-int dlm_lockres_master_requery(struct dlm_ctxt *dlm,
-			       struct dlm_lock_resource *res, u8 *real_master);
 
 
 int dlm_dispatch_assert_master(struct dlm_ctxt *dlm,

fs/ocfs2/dlm/dlmdomain.c

@@ -408,12 +408,13 @@ static void __dlm_print_nodes(struct dlm_ctxt *dlm)
 
 	assert_spin_locked(&dlm->spinlock);
 
-	mlog(ML_NOTICE, "Nodes in my domain (\"%s\"):\n", dlm->name);
+	printk(KERN_INFO "ocfs2_dlm: Nodes in domain (\"%s\"): ", dlm->name);
 
 	while ((node = find_next_bit(dlm->domain_map, O2NM_MAX_NODES,
 				     node + 1)) < O2NM_MAX_NODES) {
-		mlog(ML_NOTICE, " node %d\n", node);
+		printk("%d ", node);
 	}
+	printk("\n");
 }
 
 static int dlm_exit_domain_handler(struct o2net_msg *msg, u32 len, void *data)
@@ -429,7 +430,7 @@ static int dlm_exit_domain_handler(struct o2net_msg *msg, u32 len, void *data)
 
 	node = exit_msg->node_idx;
 
-	mlog(0, "Node %u leaves domain %s\n", node, dlm->name);
+	printk(KERN_INFO "ocfs2_dlm: Node %u leaves domain %s\n", node, dlm->name);
 
 	spin_lock(&dlm->spinlock);
 	clear_bit(node, dlm->domain_map);
@@ -678,6 +679,8 @@ static int dlm_assert_joined_handler(struct o2net_msg *msg, u32 len, void *data)
 		set_bit(assert->node_idx, dlm->domain_map);
 		__dlm_set_joining_node(dlm, DLM_LOCK_RES_OWNER_UNKNOWN);
 
+		printk(KERN_INFO "ocfs2_dlm: Node %u joins domain %s\n",
+		       assert->node_idx, dlm->name);
 		__dlm_print_nodes(dlm);
 
 		/* notify anything attached to the heartbeat events */

fs/ocfs2/dlm/dlmrecovery.c

@@ -95,6 +95,9 @@ static void dlm_reco_unlock_ast(void *astdata, enum dlm_status st);
 static void dlm_request_all_locks_worker(struct dlm_work_item *item,
 					 void *data);
 static void dlm_mig_lockres_worker(struct dlm_work_item *item, void *data);
+static int dlm_lockres_master_requery(struct dlm_ctxt *dlm,
+				      struct dlm_lock_resource *res,
+				      u8 *real_master);
 
 static u64 dlm_get_next_mig_cookie(void);
 
@@ -1484,8 +1487,9 @@ static void dlm_mig_lockres_worker(struct dlm_work_item *item, void *data)
 
 
 
-int dlm_lockres_master_requery(struct dlm_ctxt *dlm,
-			       struct dlm_lock_resource *res, u8 *real_master)
+static int dlm_lockres_master_requery(struct dlm_ctxt *dlm,
+				      struct dlm_lock_resource *res,
+				      u8 *real_master)
 {
 	struct dlm_node_iter iter;
 	int nodenum;

fs/ocfs2/dlmglue.c

@@ -2071,8 +2071,7 @@ int ocfs2_dlm_init(struct ocfs2_super *osb)
 	}
 
 	/* launch vote thread */
-	osb->vote_task = kthread_run(ocfs2_vote_thread, osb, "ocfs2vote-%d",
-				     osb->osb_id);
+	osb->vote_task = kthread_run(ocfs2_vote_thread, osb, "ocfs2vote");
 	if (IS_ERR(osb->vote_task)) {
 		status = PTR_ERR(osb->vote_task);
 		osb->vote_task = NULL;