From: ebiederm@xmission.com (Eric W. Biederman)
To: Andrew Morton <akpm@digeo.com>
Cc: mbligh@aracnet.com, wli@holomorphy.com, davem@redhat.com,
rohit.seth@intel.com, davidm@napali.hpl.hp.com, anton@samba.org,
linux-mm@kvack.org
Subject: Re: hugepage patches
Date: 05 Feb 2003 05:25:45 -0700 [thread overview]
Message-ID: <m1r8amzzg6.fsf@frodo.biederman.org> (raw)
In-Reply-To: <20030204131206.2b6c33fa.akpm@digeo.com>
Andrew Morton <akpm@digeo.com> writes:
> ebiederm@xmission.com (Eric W. Biederman) wrote:
> >
> > I can't imagine it being useful to guys like oracle without MAP_SHARED
> > support....
>
> MAP_SHARED is supported. I haven't tested it much though.
Given that none of the standard kernel idioms to prevent races in
this kind of code are present, I would be very surprised if it
was not racy.
- inode->i_sem is not taken to protect inode->i_size.
- After successfully allocating a page, a test is not made to see if
another process with the same mapping has allocated the page first.
Eric
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next prev parent reply other threads:[~2003-02-05 12:25 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-31 23:15 Andrew Morton
2003-01-31 23:13 ` David S. Miller
2003-01-31 23:36 ` Andrew Morton
2003-01-31 23:23 ` David S. Miller
2003-01-31 23:45 ` Andrew Morton
2003-01-31 23:48 ` David S. Miller
2003-01-31 23:16 ` Andrew Morton
2003-01-31 23:17 ` Andrew Morton
2003-01-31 23:18 ` Andrew Morton
2003-01-31 23:18 ` Andrew Morton
2003-02-01 8:58 ` Ingo Oeser
2003-02-01 9:31 ` Andrew Morton
2003-02-01 10:00 ` William Lee Irwin III
2003-02-01 10:14 ` Andrew Morton
2003-02-02 10:55 ` Andrew Morton
2003-02-02 10:55 ` Andrew Morton
2003-02-02 19:59 ` William Lee Irwin III
2003-02-02 20:49 ` Andrew Morton
2003-02-03 15:09 ` Eric W. Biederman
2003-02-03 21:29 ` Andrew Morton
2003-02-04 5:37 ` Eric W. Biederman
2003-02-04 5:50 ` William Lee Irwin III
2003-02-04 7:06 ` Eric W. Biederman
2003-02-04 7:16 ` Martin J. Bligh
2003-02-04 12:40 ` Eric W. Biederman
2003-02-04 15:55 ` Martin J. Bligh
2003-02-05 12:18 ` Eric W. Biederman
2003-02-04 21:12 ` Andrew Morton
2003-02-05 12:25 ` Eric W. Biederman [this message]
2003-02-05 19:57 ` Andrew Morton
2003-02-05 20:00 ` Andrew Morton
2003-02-02 10:55 ` Andrew Morton
2003-02-02 10:56 ` Andrew Morton
2003-02-02 20:06 ` William Lee Irwin III
2003-02-02 10:56 ` Andrew Morton
2003-02-02 10:56 ` Andrew Morton
2003-02-02 10:57 ` Andrew Morton
2003-02-02 10:57 ` Andrew Morton
2003-02-02 20:17 ` William Lee Irwin III
2003-02-02 10:57 ` Andrew Morton
2003-02-07 21:49 Seth, Rohit
2003-02-07 22:00 ` Andrew Morton
2003-02-07 22:02 Seth, Rohit
2003-02-07 22:24 ` Andrew Morton
2003-02-08 1:47 Seth, Rohit
2003-02-08 2:02 ` Andrew Morton
2003-02-08 3:05 Seth, Rohit
2003-02-08 8:48 ` Andrew Morton
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