From: David Hildenbrand <david@redhat.com>
To: Topi Miettinen <toiwoton@gmail.com>,
akpm@linux-foundation.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: optionally disable brk()
Date: Fri, 2 Oct 2020 19:52:19 +0200 [thread overview]
Message-ID: <653873ef-2a57-37e0-1ac3-fba763652b35@redhat.com> (raw)
In-Reply-To: <20201002171921.3053-1-toiwoton@gmail.com>
On 02.10.20 19:19, Topi Miettinen wrote:
> The brk() system call allows to change data segment size (heap). This
> is mainly used by glibc for memory allocation, but it can use mmap()
> and that results in more randomized memory mappings since the heap is
> always located at fixed offset to program while mmap()ed memory is
> randomized.
Want to take more Unix out of Linux?
Honestly, why care about disabling? User space can happily use mmap() if
it prefers.
--
Thanks,
David / dhildenb
next prev parent reply other threads:[~2020-10-02 17:52 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-02 17:19 [PATCH] mm: optionally disable brk() Topi Miettinen
2020-10-02 17:52 ` David Hildenbrand [this message]
2020-10-02 21:19 ` David Laight
2020-10-02 21:44 ` Topi Miettinen
2020-10-05 6:12 ` Michal Hocko
2020-10-05 8:11 ` Topi Miettinen
2020-10-05 8:22 ` Michal Hocko
2020-10-05 9:03 ` Topi Miettinen
2020-10-05 14:12 ` Jonathan Corbet
2020-10-05 16:14 ` Topi Miettinen
2020-10-05 9:13 ` David Hildenbrand
2020-10-05 9:20 ` Michal Hocko
2020-10-05 9:47 ` Topi Miettinen
2020-10-05 9:55 ` David Hildenbrand
2020-10-05 11:21 ` David Laight
2020-10-05 12:18 ` David Hildenbrand
2020-10-05 12:25 ` David Laight
2020-10-07 9:43 ` Topi Miettinen
2020-11-01 11:41 ` Topi Miettinen
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