linux-kernel - Re: [PATCH] vfs: Add a trace point in the mark_inode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 11 Nov 2009 08:19:05 -0800
From:	Arjan van de Ven <arjan@...radead.org>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	Wu Fengguang <fengguang.wu@...el.com>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	Christoph Hellwig <hch@...radead.org>,
	Al Viro <viro@...IV.linux.org.uk>, mingo@...e.hu,
	Frederic Weisbecker <fweisbec@...il.com>,
	auke-jan.h.kok@...el.com
Subject: Re: [PATCH] vfs: Add a trace point in the mark_inode_dirty function

On Wed, 11 Nov 2009 02:42:39 -0500
Jeff Garzik <jeff@...zik.org> wrote:

> On 11/11/2009 01:34 AM, Arjan van de Ven wrote:
> > Wu Fengguang<fengguang.wu@...el.com>  wrote:
> >> Maybe this is enough for POWERTOP, however for general use, the
> >> dirty type(data/metadata) and inode number may be valuable to some
> >> users?
> >
> > what can a user do with an inode number????
> 
> Inode numbers have always been visible to userspace...  IIRC, tar(1) 
> uses the st_ino member of struct stat to detect hard links in certain 
> cases.  ls(1) displays inode numbers with -i, find(1) looks for them 
> with -inum, ...

ok let me rephrase that. What would a user DO with this inode number
information, given that the filename is already passed on;
what additional useful, not-infinitely-hard-to-get piece of information
does this give the user that he can use to do <something> that he cannot
do with the current information ? E.g. what is that <something> ?



-- 
Arjan van de Ven 	Intel Open Source Technology Centre
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/