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From: Roland McGrath <roland@redhat.com>
To: bryan.wu@analog.com
Cc: David Howells <dhowells@redhat.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH -mm] utrace: nommu fixup support utrace
Date: Tue,  6 Mar 2007 19:42:16 -0800 (PST)	[thread overview]
Message-ID: <20070307034216.472921801C4@magilla.sf.frob.com> (raw)
In-Reply-To: Wu, Bryan's message of  Tuesday, 6 March 2007 15:25:27 +0800 <1173165927.17134.5.camel@roc-desktop>

That old ptrace check seems pretty questionable to me.  I think what you
want is for the nommu world's get_user_pages/access_process_vm when called
with force=1,write=1 on a read-only MAP_PRIVATE page to do something more
morally similar to the mmu world's COW than it does now.


Thanks,
Roland

  parent reply	other threads:[~2007-03-07  3:42 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-03-06  7:25 Wu, Bryan
2007-03-06  9:37 ` David Howells
2007-03-06  9:49   ` Wu, Bryan
2007-03-07  3:42 ` Roland McGrath [this message]
2007-03-07 11:10   ` David Howells
2007-03-09  7:37     ` Roland McGrath
2007-03-09 11:41       ` David Howells

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