Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
  [DLM] fix oops in kref_put when removing a lockspace
  [DLM] Fix kref_put oops
  [GFS2] Fix OOM error handling
  [GFS2] Fix incorrect fs sync behaviour.
  [GFS2] don't panic needlessly

fs/dlm/lockspace.c

@@ -43,6 +43,10 @@ static ssize_t dlm_control_store(struct dlm_ls *ls, const char *buf, size_t len)
 	ssize_t ret = len;
 	int n = simple_strtol(buf, NULL, 0);
 
+	ls = dlm_find_lockspace_local(ls->ls_local_handle);
+	if (!ls)
+		return -EINVAL;
+
 	switch (n) {
 	case 0:
 		dlm_ls_stop(ls);
@@ -53,6 +57,7 @@ static ssize_t dlm_control_store(struct dlm_ls *ls, const char *buf, size_t len)
 	default:
 		ret = -EINVAL;
 	}
+	dlm_put_lockspace(ls);
 	return ret;
 }
 
@@ -143,6 +148,12 @@ static ssize_t dlm_attr_store(struct kobject *kobj, struct attribute *attr,
 	return a->store ? a->store(ls, buf, len) : len;
 }
 
+static void lockspace_kobj_release(struct kobject *k)
+{
+	struct dlm_ls *ls  = container_of(k, struct dlm_ls, ls_kobj);
+	kfree(ls);
+}
+
 static struct sysfs_ops dlm_attr_ops = {
 	.show  = dlm_attr_show,
 	.store = dlm_attr_store,
@@ -151,6 +162,7 @@ static struct sysfs_ops dlm_attr_ops = {
 static struct kobj_type dlm_ktype = {
 	.default_attrs = dlm_attrs,
 	.sysfs_ops     = &dlm_attr_ops,
+	.release       = lockspace_kobj_release,
 };
 
 static struct kset dlm_kset = {
@@ -678,7 +690,7 @@ static int release_lockspace(struct dlm_ls *ls, int force)
 	dlm_clear_members_gone(ls);
 	kfree(ls->ls_node_array);
 	kobject_unregister(&ls->ls_kobj);
-	kfree(ls);
+        /* The ls structure will be freed when the kobject is done with */
 
 	mutex_lock(&ls_lock);
 	ls_count--;

fs/gfs2/inode.c

@@ -157,6 +157,9 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum *inum,
 	struct gfs2_glock *io_gl;
 	int error;
 
+	if (!inode)
+		return ERR_PTR(-ENOBUFS);
+
 	if (inode->i_state & I_NEW) {
 		struct gfs2_sbd *sdp = GFS2_SB(inode);
 		umode_t mode = DT2IF(type);

fs/gfs2/main.c

@@ -84,8 +84,8 @@ static int __init init_gfs2_fs(void)
 
 	gfs2_inode_cachep = kmem_cache_create("gfs2_inode",
 					      sizeof(struct gfs2_inode),
-					      0, (SLAB_RECLAIM_ACCOUNT|
-					      SLAB_PANIC|SLAB_MEM_SPREAD),
+					      0,  SLAB_RECLAIM_ACCOUNT|
+					          SLAB_MEM_SPREAD,
 					      gfs2_init_inode_once, NULL);
 	if (!gfs2_inode_cachep)
 		goto fail;

fs/gfs2/ops_super.c

@@ -138,16 +138,27 @@ static void gfs2_put_super(struct super_block *sb)
 }
 
 /**
- * gfs2_write_super - disk commit all incore transactions
- * @sb: the filesystem
+ * gfs2_write_super
+ * @sb: the superblock
  *
- * This function is called every time sync(2) is called.
- * After this exits, all dirty buffers are synced.
  */
 
 static void gfs2_write_super(struct super_block *sb)
 {
+	sb->s_dirt = 0;
+}
+
+/**
+ * gfs2_sync_fs - sync the filesystem
+ * @sb: the superblock
+ *
+ * Flushes the log to disk.
+ */
+static int gfs2_sync_fs(struct super_block *sb, int wait)
+{
+	sb->s_dirt = 0;
 	gfs2_log_flush(sb->s_fs_info, NULL);
+	return 0;
 }
 
 /**
@@ -452,17 +463,18 @@ static void gfs2_destroy_inode(struct inode *inode)
 }
 
 struct super_operations gfs2_super_ops = {
-	.alloc_inode = gfs2_alloc_inode,
-	.destroy_inode = gfs2_destroy_inode,
-	.write_inode = gfs2_write_inode,
-	.delete_inode = gfs2_delete_inode,
-	.put_super = gfs2_put_super,
-	.write_super = gfs2_write_super,
-	.write_super_lockfs = gfs2_write_super_lockfs,
-	.unlockfs = gfs2_unlockfs,
-	.statfs = gfs2_statfs,
-	.remount_fs = gfs2_remount_fs,
-	.clear_inode = gfs2_clear_inode,
-	.show_options = gfs2_show_options,
+	.alloc_inode		= gfs2_alloc_inode,
+	.destroy_inode		= gfs2_destroy_inode,
+	.write_inode		= gfs2_write_inode,
+	.delete_inode		= gfs2_delete_inode,
+	.put_super		= gfs2_put_super,
+	.write_super		= gfs2_write_super,
+	.sync_fs		= gfs2_sync_fs,
+	.write_super_lockfs 	= gfs2_write_super_lockfs,
+	.unlockfs		= gfs2_unlockfs,
+	.statfs			= gfs2_statfs,
+	.remount_fs		= gfs2_remount_fs,
+	.clear_inode		= gfs2_clear_inode,
+	.show_options		= gfs2_show_options,
 };