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Subject: Re: [PATCH v2 2.6.38-rc8-tip 3/20]  3: uprobes: Breakground page
 replacement.
From: Steven Rostedt <rostedt@goodmis.org>
To: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@elte.hu>,
        Linux-mm <linux-mm@kvack.org>,
        Arnaldo Carvalho de Melo <acme@infradead.org>,
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        Roland McGrath <roland@hack.frob.com>,
        SystemTap <systemtap@sources.redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
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On Mon, 2011-03-14 at 22:54 +0530, Srikar Dronamraju wrote:
> > 
> > I'm also curious to why we can't modify text code that is also mapped as
> > read/write.
> > 
> 
> If text code is mapped read/write then on memory pressure the page gets
> written to the disk. Hence breakpoints inserted may end up being in the
> disk copy modifying the actual copy.
> 
> 
OK, could you put a comment about that too.

Thanks,

-- Steve


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