linux-kernel - Re: [PATCH net-next v5 10/13] mm: page_frag: introduce prepare/probe/commit API

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: <ea2be92c-88cc-79fe-f21f-9c80f2b02ca0@huawei.com>
Date: Thu, 30 May 2024 17:21:45 +0800
From: Yunsheng Lin <linyunsheng@...wei.com>
To: <davem@...emloft.net>, <kuba@...nel.org>, <pabeni@...hat.com>
CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>, Alexander Duyck
	<alexander.duyck@...il.com>, Andrew Morton <akpm@...ux-foundation.org>,
	<linux-mm@...ck.org>
Subject: Re: [PATCH net-next v5 10/13] mm: page_frag: introduce
 prepare/probe/commit API

On 2024/5/28 20:56, Yunsheng Lin wrote:

> +#define page_frag_alloc_probe(nc, offset, fragsz, va)			\
> +({									\
> +	struct page *__page = NULL;					\
> +									\
> +	VM_BUG_ON(!*(fragsz));						\

The above above marco seems to need to include mmdebug.h explicitly
to avoid compile error for x86 system.


> +	if (likely((nc)->remaining >= *(fragsz)))			\
> +		__page = virt_to_page(__page_frag_alloc_probe(nc,	\
> +							      offset,	\
> +							      fragsz,	\
> +							      va));	\
> +									\
> +	__page;								\
> +})