From: Kees Cook <kees@kernel.org>
To: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Vlastimil Babka <vbabka@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
Christoph Lameter <cl@gentwo.org>,
David Rientjes <rientjes@google.com>,
Roman Gushchin <roman.gushchin@linux.dev>,
Harry Yoo <harry.yoo@oracle.com>,
linux-mm@kvack.org, "Gustavo A. R. Silva" <gustavoars@kernel.org>,
linux-hardening@vger.kernel.org
Subject: Re: [PATCH v4 13/16] usercopy: Remove folio references from check_heap_object()
Date: Mon, 24 Nov 2025 13:06:27 -0800 [thread overview]
Message-ID: <202511241306.525D3248@keescook> (raw)
In-Reply-To: <20251113000932.1589073-14-willy@infradead.org>
On Thu, Nov 13, 2025 at 12:09:27AM +0000, Matthew Wilcox (Oracle) wrote:
> Use page_slab() instead of virt_to_folio() followed by folio_slab().
> We do end up calling compound_head() twice for non-slab copies, but that
> will not be a problem once we allocate memdescs separately.
>
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Kees Cook <kees@kernel.org>
--
Kees Cook
prev parent reply other threads:[~2025-11-24 21:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20251113000932.1589073-1-willy@infradead.org>
2025-11-13 0:09 ` [PATCH v4 13/16] usercopy: Remove folio references from check_heap_object() Matthew Wilcox (Oracle)
2025-11-24 6:14 ` Harry Yoo
2025-11-24 21:06 ` Kees Cook [this message]
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