From: Zi Yan <ziy@nvidia.com>
To: Sunny Patel <nueralspacetech@gmail.com>
Cc: David Hildenbrand <david@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Matthew Brost <matthew.brost@intel.com>,
Joshua Hahn <joshua.hahnjy@gmail.com>,
Rakie Kim <rakie.kim@sk.com>, Byungchul Park <byungchul@sk.com>,
Gregory Price <gourry@gourry.net>,
Ying Huang <ying.huang@linux.alibaba.com>,
Alistair Popple <apopple@nvidia.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm/migrate_device: Cleanup up PMD Checks and warnings
Date: Thu, 16 Apr 2026 16:30:12 -0400 [thread overview]
Message-ID: <F134AEF0-A71A-49AF-8C22-A06C9A3CC464@nvidia.com> (raw)
In-Reply-To: <20260414141344.29949-1-nueralspacetech@gmail.com>
On 14 Apr 2026, at 10:13, Sunny Patel wrote:
> Remove the odd VM_WARN_ON_FOLIO(!folio, folio) usage and replace it
> with a simpler VM_WARN_ON_ONCE(!folio) check.
>
> Drop the redundant VM_WARN_ON_ONCE(!pmd_none(*pmdp) &&
> !is_huge_zero_pmd(*pmdp)).
>
> Refactor the PMD checks to use pmd_present(), making the control flow
> clearer and avoiding duplicate condition checks.
>
> Signed-off-by: Sunny Patel <nueralspacetech@gmail.com>
> ---
> mm/migrate_device.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
Acked-by: Zi Yan <ziy@nvidia.com>
Best Regards,
Yan, Zi
next prev parent reply other threads:[~2026-04-16 20:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-14 14:13 Sunny Patel
2026-04-16 19:44 ` David Hildenbrand (Arm)
2026-04-16 23:52 ` SeongJae Park
2026-04-17 8:55 ` David Hildenbrand (Arm)
2026-04-17 7:21 ` Huang, Ying
2026-04-16 20:30 ` Zi Yan [this message]
2026-04-16 23:50 ` SeongJae Park
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