From: William Lee Irwin III <wli@holomorphy.com>
To: Ken Chen <kenchen@google.com>
Cc: Adam Litke <agl@us.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org
Subject: Re: [patch] hugetlb: allow extending ftruncate on hugetlbfs
Date: Thu, 2 Aug 2007 06:05:50 -0700 [thread overview]
Message-ID: <20070802130550.GQ11781@holomorphy.com> (raw)
In-Reply-To: <b040c32a0708011636x74f61aefvf2ecaa280cc990fc@mail.gmail.com>
On Wed, Aug 01, 2007 at 04:36:15PM -0700, Ken Chen wrote:
> For historical reason, expanding ftruncate that increases file size on
> hugetlbfs is not allowed due to pages were pre-faulted and lack of
> fault handler. Now that we have demand faulting on hugetlb since
> 2.6.15, there is no reason to hold back that limitation.
> This will make hugetlbfs behave more like a normal fs. I'm writing a
> user level code that uses hugetlbfs but will fall back to tmpfs if
> there are no hugetlb page available in the system. Having hugetlbfs
> specific ftruncate behavior is a bit quirky and I would like to remove
> that artificial limitation.
> Signed-off-by: <kenchen@google.com>
Excellent, thank you.
Acked-by: Wiliam Irwin <wli@holomorphy.com>
-- wli
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prev parent reply other threads:[~2007-08-02 13:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-01 23:36 Ken Chen
2007-08-02 13:05 ` William Lee Irwin III [this message]
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