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From: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
Date: Tue, 1 Apr 2014 19:56:18 -0400
Message-ID: <CAHGf_=rH+vfFzRrh35TETxjFU2HM0xnDQFweQ+Bfw20Pm2nL3g@mail.gmail.com>
Subject: Re: [PATCH] ipc,shm: increase default size for shmmax
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To: Davidlohr Bueso <davidlohr@hp.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, Manfred Spraul <manfred@colorfullife.com>, aswin@hp.com, LKML <linux-kernel@vger.kernel.org>, "linux-mm@kvack.org" <linux-mm@kvack.org>

>> > Ah-hah, that's interesting info.
>> >
>> > Let's make the default 64GB?
>>
>> 64GB is infinity at that time, but it no longer near infinity today. I like
>> very large or total memory proportional number.
>
> So I still like 0 for unlimited. Nice, clean and much easier to look at
> than ULONG_MAX. And since we cannot disable shm through SHMMIN, I really
> don't see any disadvantages, as opposed to some other arbitrary value.
> Furthermore it wouldn't break userspace: any existing sysctl would
> continue to work, and if not set, the user never has to worry about this
> tunable again.
>
> Please let me know if you all agree with this...

Surething. Why not. :)

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