linux-ext4 - Re: [RFC][PATCH 0/3] ext4 online defrag (ver 0.2)

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:	Fri, 19 Jan 2007 04:33:51 -0700
From:	Andreas Dilger <adilger@...sterfs.com>
To:	Takashi Sato <sho@...s.nec.co.jp>
Cc:	Joel Becker <Joel.Becker@...cle.com>, linux-ext4@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: [RFC][PATCH 0/3] ext4 online defrag (ver 0.2)

On Jan 19, 2007  14:19 +0900, Takashi Sato wrote:
> >>On Jan 16, 2007  21:03 +0900, sho@...s.nec.co.jp wrote:
> >>>1. Add new ioctl(EXT4_IOC_DEFRAG) which returns the first physical
> >>>   block number of the specified file.  With this ioctl, a command
> >>>   gets the specified directory's.
> >>
> >>Maybe I don't understand, but how is this different from the long-time
> >>FIBMAP ioctl?
> >
> >I can use FIBMAP instead of my new ioctl.
> >You are right.  I should have used FIBMAP ioctl...
> 
> I have to get the physical block number of the specified directory.
> But FIBMAP is available only for a regular file, not for a directory.
> So I will use my new ioctl.

Though it might make sense to implement FIBMAP for a directory, to keep
it consistent and allow user-space tools like "filefrag" to work on
directories also.

Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.

-
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html