Hi Roman,
On Fri, Jan 4, 2013 at 11:43 PM, Michel Lespinasse wrote:
> On Fri, Jan 4, 2013 at 10:40 PM, Roman Dubtsov wrote:
>> - POPULATE_VIA_LOOP -- makes the test populate memory using a loop
>> - POPULATE_VIA_MMAP -- makes the test populate memory via MAP_POPULATE
>>
> Heh, very interesting.
On Fri, Jan 4, 2013 at 10:40 PM, Roman Dubtsov wrote:
> On Fri, 2013-01-04 at 03:57 -0800, Michel Lespinasse wrote:
>> If this doesn't help, could you please send me your test case ? I
>> think you described enough of it that I would be able to reproduce it
>> given some time, but it's just easier
On Fri, 2013-01-04 at 03:57 -0800, Michel Lespinasse wrote:
> On Fri, Jan 04, 2013 at 12:09:37AM +0700, Roman Dubtsov wrote:
> > On Wed, 2013-01-02 at 16:09 -0800, Michel Lespinasse wrote:
> > > > Is there an interest in fixing this or concurrent mmaps() from the same
> > > > process are too much o
On Fri, Jan 04, 2013 at 12:09:37AM +0700, Roman Dubtsov wrote:
> On Wed, 2013-01-02 at 16:09 -0800, Michel Lespinasse wrote:
> > > Is there an interest in fixing this or concurrent mmaps() from the same
> > > process are too much of a corner case to worry about it?
> >
> > Funny this comes up agai
On Wed, 2013-01-02 at 16:09 -0800, Michel Lespinasse wrote:
> > Is there an interest in fixing this or concurrent mmaps() from the same
> > process are too much of a corner case to worry about it?
>
> Funny this comes up again. I actually have a patch series that is
> supposed to do that:
> [PATCH
On Wed, Jan 2, 2013 at 8:50 AM, Roman Dubtsov wrote:
> Concurrent mmap() calls from the same process are serialized via downing
> mm->mmap_sem for write. This means that operations like populating the
> pages which do not alter vmas are also performed serially. Anecdotal
> data from two machines I
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