From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f45.google.com (mail-pa0-f45.google.com [209.85.220.45]) by kanga.kvack.org (Postfix) with ESMTP id D44956B0038 for ; Tue, 24 Mar 2015 04:48:20 -0400 (EDT) Received: by pabxg6 with SMTP id xg6so206433302pab.0 for ; Tue, 24 Mar 2015 01:48:20 -0700 (PDT) Received: from userp1040.oracle.com (userp1040.oracle.com. [156.151.31.81]) by mx.google.com with ESMTPS id q3si4741920pdq.55.2015.03.24.01.48.18 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 24 Mar 2015 01:48:20 -0700 (PDT) Date: Tue, 24 Mar 2015 11:48:23 +0300 From: Dan Carpenter Subject: [next:master 6096/6547] fs/nilfs2/btree.c:1611 nilfs_btree_seek_key() warn: impossible condition '(start > (~0)) => (0-u64max > u64max)' Message-ID: <20150324084823.GB16501@mwanda> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: owner-linux-mm@kvack.org List-ID: To: kbuild@01.org, Ryusuke Konishi Cc: Dan Carpenter , Linux Memory Management List [ I suppose this is intentional but this is the first time NILFS_BTREE_KEY_MAX has been used since it was introduced in 2009 so it's strange. - dan ] tree: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 50d4d7167355e3ffa6e0a759e88cd277e58a5cb9 commit: 6c302a8684cd06a7ec985fb23f31fa8f3f210eef [6096/6547] nilfs2: add bmap function to seek a valid key fs/nilfs2/btree.c:1611 nilfs_btree_seek_key() warn: impossible condition '(start > (~0)) => (0-u64max > u64max)' git remote add next git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git remote update next git checkout 6c302a8684cd06a7ec985fb23f31fa8f3f210eef vim +1611 fs/nilfs2/btree.c 17c76b01 Koji Sato 2009-04-06 1595 goto out; 2e0c2c73 Ryusuke Konishi 2009-08-15 1596 nilfs_btree_commit_delete(btree, path, level, dat); be667377 Ryusuke Konishi 2011-03-05 1597 nilfs_inode_sub_blocks(btree->b_inode, stats.bs_nblocks); 17c76b01 Koji Sato 2009-04-06 1598 17c76b01 Koji Sato 2009-04-06 1599 out: 6d28f7ea Ryusuke Konishi 2009-08-15 1600 nilfs_btree_free_path(path); 17c76b01 Koji Sato 2009-04-06 1601 return ret; 17c76b01 Koji Sato 2009-04-06 1602 } 17c76b01 Koji Sato 2009-04-06 1603 6c302a86 Ryusuke Konishi 2015-03-20 1604 static int nilfs_btree_seek_key(const struct nilfs_bmap *btree, __u64 start, 6c302a86 Ryusuke Konishi 2015-03-20 1605 __u64 *keyp) 6c302a86 Ryusuke Konishi 2015-03-20 1606 { 6c302a86 Ryusuke Konishi 2015-03-20 1607 struct nilfs_btree_path *path; 6c302a86 Ryusuke Konishi 2015-03-20 1608 const int minlevel = NILFS_BTREE_LEVEL_NODE_MIN; 6c302a86 Ryusuke Konishi 2015-03-20 1609 int ret; 6c302a86 Ryusuke Konishi 2015-03-20 1610 6c302a86 Ryusuke Konishi 2015-03-20 @1611 if (start > NILFS_BTREE_KEY_MAX) 6c302a86 Ryusuke Konishi 2015-03-20 1612 return -ENOENT; 6c302a86 Ryusuke Konishi 2015-03-20 1613 6c302a86 Ryusuke Konishi 2015-03-20 1614 path = nilfs_btree_alloc_path(); 6c302a86 Ryusuke Konishi 2015-03-20 1615 if (!path) 6c302a86 Ryusuke Konishi 2015-03-20 1616 return -ENOMEM; 6c302a86 Ryusuke Konishi 2015-03-20 1617 6c302a86 Ryusuke Konishi 2015-03-20 1618 ret = nilfs_btree_do_lookup(btree, path, start, NULL, minlevel, 0); 6c302a86 Ryusuke Konishi 2015-03-20 1619 if (!ret) --- 0-DAY kernel test infrastructure Open Source Technology Center http://lists.01.org/mailman/listinfo/kbuild Intel Corporation -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org