linux-kernel - Re: [PATCH v4 03/22] mm/zsmalloc: convert __zs_map_object/__zs_unmap

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20240730093835.GC16599@google.com>
Date: Tue, 30 Jul 2024 18:38:35 +0900
From: Sergey Senozhatsky <senozhatsky@...omium.org>
To: alexs@...nel.org
Cc: Vitaly Wool <vitaly.wool@...sulko.com>,
	Miaohe Lin <linmiaohe@...wei.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	minchan@...nel.org, willy@...radead.org, senozhatsky@...omium.org,
	david@...hat.com, 42.hyeyoo@...il.com,
	Yosry Ahmed <yosryahmed@...gle.com>, nphamcs@...il.com
Subject: Re: [PATCH v4 03/22] mm/zsmalloc: convert
 __zs_map_object/__zs_unmap_object to use zpdesc

On (24/07/29 19:25), alexs@...nel.org wrote:
> +static inline void *zpdesc_kmap_atomic(struct zpdesc *zpdesc)
> +{
> +	return kmap_atomic(zpdesc_page(zpdesc));
> +}
> +
[..]
>  	/* copy object to per-cpu buffer */
> -	addr = kmap_atomic(pages[0]);
> +	addr = zpdesc_kmap_atomic(zpdescs[0]);
>  	memcpy(buf, addr + off, sizes[0]);
>  	kunmap_atomic(addr);
> -	addr = kmap_atomic(pages[1]);
> +	addr = zpdesc_kmap_atomic(zpdescs[1]);
>  	memcpy(buf + sizes[0], addr, sizes[1]);
>  	kunmap_atomic(addr);

Don't know if kmap_atomic() wrapper buys us anything, but okay.