From: Tomasz Torcz <tomek@pipebreaker.pl>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
BTRFS MAILING LIST <linux-btrfs@vger.kernel.org>
Subject: Re: VFS support for fast copy on deduplicating FSes
Date: Thu, 25 Nov 2010 11:32:59 +0100 [thread overview]
Message-ID: <20101125103258.GA16562@mother.pipebreaker.pl> (raw)
In-Reply-To: <AANLkTinz17SePZCCixBCA_WoW3rFWAsB7mRghL9uN17h@mail.gmail.com>
On Thu, Nov 25, 2010 at 04:19:17AM -0600, David Nicol wrote:
> unresearched question/suggestion:
>
> Is there general support for a "fast copy" ioctl in the VFS layer,
> which would be hooked by file systems that support COW or other forms
> of deduplication and can provide copy semantics by manipulating
> metadata only?
>
Yes, see reflink(2) syscall (http://lwn.net/Articles/331576/).
--
Tomasz Torcz "Funeral in the morning, IDE hacking
xmpp: zdzichubg@chrome.pl in the afternoon and evening." - Alan Cox
next prev parent reply other threads:[~2010-11-25 10:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-25 10:19 David Nicol
2010-11-25 10:32 ` Tomasz Torcz [this message]
2010-11-25 10:50 ` Pádraig Brady
2010-11-25 10:36 ` Gordan Bobic
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