linux-kernel - Re: [PATCH 1/2] mm/gup: Remove unnecessary check in memfd_pin

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <6f75ef86-29fd-41a1-95ba-f42f7c3bd6ce@redhat.com>
Date: Wed, 30 Apr 2025 23:48:57 +0200
From: David Hildenbrand <david@...hat.com>
To: "Vishal Moola (Oracle)" <vishal.moola@...il.com>, linux-mm@...ck.org
Cc: linux-kernel@...r.kernel.org, Vivek Kasireddy
 <vivek.kasireddy@...el.com>, Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 1/2] mm/gup: Remove unnecessary check in
 memfd_pin_folios()

On 30.04.25 03:00, Vishal Moola (Oracle) wrote:
> Commit 89c1905d9c14 ("mm/gup: introduce memfd_pin_folios() for pinning memfd folios")
> checks if filemap_get_folios_contig() returned duplicate folios to
> prevent multiple attempts at pinning the same folio.
> 
> Commit 8ab1b1602396 ("mm: fix filemap_get_folios_contig returning batches of identical folios")
> ensures that filemap_get_folios_contig() returns a batch of distinct folios.
> 
> We can remove the duplicate folio check to simplify the code and save
> 58 bytes of text.
> 
> Signed-off-by: Vishal Moola (Oracle) <vishal.moola@...il.com>
> ---

Acked-by: David Hildenbrand <david@...hat.com>

-- 
Cheers,

David / dhildenb