Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2:
  [PATCH] ocfs2: fix oops in mmap_truncate testing
  configfs: call drop_link() to cleanup after create_link() failure
  configfs: Allow ->make_item() and ->make_group() to return detailed errors.
  configfs: Fix failing mkdir() making racing rmdir() fail
  configfs: Fix deadlock with racing rmdir() and rename()
  configfs: Make configfs_new_dirent() return error code instead of NULL
  configfs: Protect configfs_dirent s_links list mutations
  configfs: Introduce configfs_dirent_lock
  ocfs2: Don't snprintf() without a format.
  ocfs2: Fix CONFIG_OCFS2_DEBUG_FS #ifdefs
  ocfs2/net: Silence build warnings on sparc64
  ocfs2: Handle error during journal load
  ocfs2: Silence an error message in ocfs2_file_aio_read()
  ocfs2: use simple_read_from_buffer()
  ocfs2: fix printk format warnings with OCFS2_FS_STATS=n
  [PATCH 2/2] ocfs2: Instrument fs cluster locks
  [PATCH 1/2] ocfs2: Add CONFIG_OCFS2_FS_STATS config option

1 files changed, 28 insertions, 17 deletions

diff --git a/fs/dlm/config.c b/fs/dlm/config.c
index eac23bd288b2..492d8caaaf25 100644
--- a/fs/dlm/config.c
+++ b/fs/dlm/config.c
@@ -41,16 +41,20 @@ struct comm;
 struct nodes;
 struct node;
 
-static struct config_group *make_cluster(struct config_group *, const char *);
+static int make_cluster(struct config_group *, const char *,
+                        struct config_group **);
 static void drop_cluster(struct config_group *, struct config_item *);
 static void release_cluster(struct config_item *);
-static struct config_group *make_space(struct config_group *, const char *);
+static int make_space(struct config_group *, const char *,
+                      struct config_group **);
 static void drop_space(struct config_group *, struct config_item *);
 static void release_space(struct config_item *);
-static struct config_item *make_comm(struct config_group *, const char *);
+static int make_comm(struct config_group *, const char *,
+                     struct config_item **);
 static void drop_comm(struct config_group *, struct config_item *);
 static void release_comm(struct config_item *);
-static struct config_item *make_node(struct config_group *, const char *);
+static int make_node(struct config_group *, const char *,
+                     struct config_item **);
 static void drop_node(struct config_group *, struct config_item *);
 static void release_node(struct config_item *);
 
@@ -392,8 +396,8 @@ static struct node *to_node(struct config_item *i)
         return i ? container_of(i, struct node, item) : NULL;
 }
 
-static struct config_group *make_cluster(struct config_group *g,
-                                         const char *name)
+static int make_cluster(struct config_group *g, const char *name,
+                        struct config_group **new_g)
 {
         struct cluster *cl = NULL;
         struct spaces *sps = NULL;
@@ -431,14 +435,15 @@ static struct config_group *make_cluster(struct config_group *g,
 
         space_list = &sps->ss_group;
         comm_list = &cms->cs_group;
-        return &cl->group;
+        *new_g = &cl->group;
+        return 0;
 
  fail:
         kfree(cl);
         kfree(gps);
         kfree(sps);
         kfree(cms);
-        return NULL;
+        return -ENOMEM;
 }
 
 static void drop_cluster(struct config_group *g, struct config_item *i)
@@ -466,7 +471,8 @@ static void release_cluster(struct config_item *i)
         kfree(cl);
 }
 
-static struct config_group *make_space(struct config_group *g, const char *name)
+static int make_space(struct config_group *g, const char *name,
+                      struct config_group **new_g)
 {
         struct space *sp = NULL;
         struct nodes *nds = NULL;
@@ -489,13 +495,14 @@ static struct config_group *make_space(struct config_group *g, const char *name)
         INIT_LIST_HEAD(&sp->members);
         mutex_init(&sp->members_lock);
         sp->members_count = 0;
-        return &sp->group;
+        *new_g = &sp->group;
+        return 0;
 
  fail:
         kfree(sp);
         kfree(gps);
         kfree(nds);
-        return NULL;
+        return -ENOMEM;
 }
 
 static void drop_space(struct config_group *g, struct config_item *i)
@@ -522,19 +529,21 @@ static void release_space(struct config_item *i)
         kfree(sp);
 }
 
-static struct config_item *make_comm(struct config_group *g, const char *name)
+static int make_comm(struct config_group *g, const char *name,
+                     struct config_item **new_i)
 {
         struct comm *cm;
 
         cm = kzalloc(sizeof(struct comm), GFP_KERNEL);
         if (!cm)
-                return NULL;
+                return -ENOMEM;
 
         config_item_init_type_name(&cm->item, name, &comm_type);
         cm->nodeid = -1;
         cm->local = 0;
         cm->addr_count = 0;
-        return &cm->item;
+        *new_i = &cm->item;
+        return 0;
 }
 
 static void drop_comm(struct config_group *g, struct config_item *i)
@@ -554,14 +563,15 @@ static void release_comm(struct config_item *i)
         kfree(cm);
 }
 
-static struct config_item *make_node(struct config_group *g, const char *name)
+static int make_node(struct config_group *g, const char *name,
+                     struct config_item **new_i)
 {
         struct space *sp = to_space(g->cg_item.ci_parent);
         struct node *nd;
 
         nd = kzalloc(sizeof(struct node), GFP_KERNEL);
         if (!nd)
-                return NULL;
+                return -ENOMEM;
 
         config_item_init_type_name(&nd->item, name, &node_type);
         nd->nodeid = -1;
@@ -573,7 +583,8 @@ static struct config_item *make_node(struct config_group *g, const char *name)
         sp->members_count++;
         mutex_unlock(&sp->members_lock);
 
-        return &nd->item;
+        *new_i = &nd->item;
+        return 0;
 }
 
 static void drop_node(struct config_group *g, struct config_item *i)