From: "David Hildenbrand (Arm)" <david@kernel.org>
To: Chen Wandun <chenwandun1@gmail.com>,
akpm@linux-foundation.org, ljs@kernel.org, shuah@kernel.org,
zokeefe@google.com
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-kselftest@vger.kernel.org
Subject: Re: [PATCH 2/2] selftests/mm: add MADV_COLLAPSE sub-PMD range tests
Date: Fri, 8 May 2026 14:23:41 +0200 [thread overview]
Message-ID: <bdc711fc-c625-4696-b6bc-28461c0c80f2@kernel.org> (raw)
In-Reply-To: <20260507070558.3064142-3-chenwandun@lixiang.com>
On 5/7/26 09:05, Chen Wandun wrote:
> Add madv_collapse_range to verify the fix for the spurious -EINVAL
> returned by madvise_collapse() when the madvised range contains no
> complete PMD-aligned window.
Do we really need 141 LOC of test to verify a "userspace is being stupid" scenario?
Nothing was really broken, it's just a suboptimal return value, or what am I
missing?
--
Cheers,
David
next prev parent reply other threads:[~2026-05-08 12:23 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-07 7:05 [PATCH 0/2] mm/khugepaged: fix sub-PMD MADV_COLLAPSE range handling Chen Wandun
2026-05-07 7:05 ` [PATCH 1/2] mm/khugepaged: fix spurious -EINVAL from sub-PMD MADV_COLLAPSE range Chen Wandun
2026-05-08 12:27 ` David Hildenbrand (Arm)
2026-05-08 15:02 ` Lorenzo Stoakes
2026-05-08 15:04 ` Lorenzo Stoakes
2026-05-09 7:53 ` Wandun
2026-05-08 19:29 ` David Hildenbrand (Arm)
2026-05-09 7:04 ` Wandun
2026-05-09 5:56 ` Wandun
2026-05-07 7:05 ` [PATCH 2/2] selftests/mm: add MADV_COLLAPSE sub-PMD range tests Chen Wandun
2026-05-08 12:23 ` David Hildenbrand (Arm) [this message]
2026-05-08 15:03 ` Lorenzo Stoakes
2026-05-09 9:47 ` [PATCH 0/2] mm/khugepaged: fix sub-PMD MADV_COLLAPSE range handling Lance Yang
2026-05-11 2:06 ` Wandun
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