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Date:	Mon, 05 Mar 2007 16:00:06 -0600
From:	Eric Sandeen <sandeen@...hat.com>
To:	Jörn Engel <joern@...ybastard.org>
CC:	Arnd Bergmann <arnd@...db.de>, Ulrich Drepper <drepper@...hat.com>,
	Anton Altaparmakov <aia21@....ac.uk>,
	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?  It would be fairly simple to support the write guarantee
> while the file is open (or rather the inode remains cached) and drop it
> afterwards.

"The posix_fallocate() function shall ensure that any required storage
for regular file data starting at offset and continuing for len bytes is
allocated on the file system storage media."

I interpret "on the storage media" to mean that it is persistent.

-Eric
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