linux-ext4 - Re: [RFC] Heads up on sys

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Message-ID: <45EC3253.2030206@redhat.com>
Date:	Mon, 05 Mar 2007 07:08:03 -0800
From:	Ulrich Drepper <drepper@...hat.com>
To:	Jörn Engel <joern@...ybastard.org>
CC:	Arnd Bergmann <arnd@...db.de>,
	Christoph Hellwig <hch@...radead.org>,
	Dave Kleikamp <shaggy@...ux.vnet.ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Amit K. Arora" <aarora@...ux.vnet.ibm.com>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-ext4@...r.kernel.org, suparna@...ibm.com, cmm@...ibm.com,
	alex@...sterfs.com, suzuki@...ibm.com
Subject: Re: [RFC] Heads up on sys_fallocate()

Jörn Engel wrote:
> Does the allocation have to be persistent beyond lifetime of the file
> descriptor?

Of course.  You call posix_fallocate once for the lifetime of the file
when it is created to ensure that all future uses will work.

It seems your filesystem will not be able to support this unless
compression is turned off.

-- 
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖


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