JFS: zero new log pages, etc.

fs/jfs/jfs_logmgr.c

@@ -1811,7 +1811,7 @@ static int lbmLogInit(struct jfs_log * log)
 		lbuf = kmalloc(sizeof(struct lbuf), GFP_KERNEL);
 		if (lbuf == 0)
 			goto error;
-		lbuf->l_ldata = (char *) __get_free_page(GFP_KERNEL);
+		lbuf->l_ldata = (char *) get_zeroed_page(GFP_KERNEL);
 		if (lbuf->l_ldata == 0) {
 			kfree(lbuf);
 			goto error;

fs/jfs/jfs_metapage.c

@@ -341,6 +341,10 @@ struct metapage *__get_metapage(struct inode *inode, unsigned long lblock,
 		}
 		mp->data = kmap(mp->page) + page_offset;
 	}
+
+	if (new)
+		memset(mp->data, 0, PSIZE);
+
 	jfs_info("__get_metapage: returning = 0x%p", mp);
 	return mp;
 

fs/jfs/super.c

@@ -548,11 +548,11 @@ static void init_once(void *foo, kmem_cache_t * cachep, unsigned long flags)
 
 	if ((flags & (SLAB_CTOR_VERIFY | SLAB_CTOR_CONSTRUCTOR)) ==
 	    SLAB_CTOR_CONSTRUCTOR) {
+		memset(jfs_ip, 0, sizeof(struct jfs_inode_info));
 		INIT_LIST_HEAD(&jfs_ip->anon_inode_list);
 		init_rwsem(&jfs_ip->rdwrlock);
 		init_MUTEX(&jfs_ip->commit_sem);
 		init_rwsem(&jfs_ip->xattr_sem);
-		jfs_ip->atlhead = 0;
 		jfs_ip->active_ag = -1;
 #ifdef CONFIG_JFS_POSIX_ACL
 		jfs_ip->i_acl = JFS_ACL_NOT_CACHED;