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Date: Thu, 21 Mar 2024 14:51:46 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Dev Jain <dev.jain@arm.com>
Cc: shuah@kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
 linux-kernel@vger.kernel.org, Anshuman.Khandual@arm.com
Subject: Re: [PATCH] selftests/mm: Confirm VA exhaustion without reliance on
 correctness of mmap()
Message-Id: <20240321145146.a3ce8a1e247371e33a437978@linux-foundation.org>
In-Reply-To: <20240321103522.516097-1-dev.jain@arm.com>
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On Thu, 21 Mar 2024 16:05:22 +0530 Dev Jain <dev.jain@arm.com> wrote:

> Currently, VA exhaustion is being checked by passing a hint to mmap() and
> expecting it to fail. This patch makes a stricter test by successful write()
> calls from /proc/self/maps to a dump file, confirming that a free chunk is
> indeed not available.

What's wrong with the current approach?