From: Dave Hansen <dave.hansen@intel.com>
To: Daniel Colascione <dancol@google.com>
Cc: linux-mm@kvack.org, Tim Murray <timmurray@google.com>,
Minchan Kim <minchan@kernel.org>
Subject: Re: Why do we let munmap fail?
Date: Mon, 21 May 2018 16:02:47 -0700 [thread overview]
Message-ID: <2e7fb27e-90b4-38d2-8ae1-d575d62c5332@intel.com> (raw)
In-Reply-To: <CAKOZuesoh7svdmdNY9md3N+vWGurigDLZ5_xDjwgU=uYdKkwqg@mail.gmail.com>
On 05/21/2018 03:54 PM, Daniel Colascione wrote:
>> There are also certainly denial-of-service concerns if you allow
>> arbitrary numbers of VMAs. The rbtree, for instance, is O(log(n)), but
>> I 'd be willing to be there are plenty of things that fall over if you
>> let the ~65k limit get 10x or 100x larger.
> Sure. I'm receptive to the idea of having *some* VMA limit. I just think
> it's unacceptable let deallocation routines fail.
If you have a resource limit and deallocation consumes resources, you
*eventually* have to fail a deallocation. Right?
next prev parent reply other threads:[~2018-05-21 23:02 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-21 22:07 Why do we let munmap fail? Daniel Colascione
2018-05-21 22:12 ` Dave Hansen
2018-05-21 22:20 ` Daniel Colascione
2018-05-21 22:29 ` Dave Hansen
2018-05-21 22:35 ` Daniel Colascione
2018-05-21 22:48 ` Dave Hansen
2018-05-21 22:54 ` Daniel Colascione
2018-05-21 23:02 ` Dave Hansen [this message]
2018-05-21 23:16 ` Daniel Colascione
2018-05-21 23:32 ` Dave Hansen
2018-05-22 0:00 ` Daniel Colascione
2018-05-22 0:22 ` Matthew Wilcox
2018-05-22 0:38 ` Daniel Colascione
2018-05-22 1:19 ` Theodore Y. Ts'o
2018-05-22 1:41 ` Daniel Colascione
2018-05-22 2:09 ` Daniel Colascione
2018-05-22 2:11 ` Matthew Wilcox
2018-05-22 1:22 ` Matthew Wilcox
2018-05-22 5:34 ` Nicholas Piggin
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