linux-kernel - Re: [PATCH 4/4] add ksm kernel shared memory driver.

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: <20090406091348.GA18464@ports.donpac.ru>
Date:	Mon, 6 Apr 2009 13:13:48 +0400
From:	Andrey Panin <pazke@...pac.ru>
To:	Izik Eidus <ieidus@...hat.com>
Cc:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org, linux-mm@...ck.org, avi@...hat.com,
	aarcange@...hat.com, chrisw@...hat.com, mtosatti@...hat.com,
	hugh@...itas.com, kamezawa.hiroyu@...fujitsu.com
Subject: Re: [PATCH 4/4] add ksm kernel shared memory driver.

On 094, 04 04, 2009 at 05:35:22PM +0300, Izik Eidus wrote:

<SNIP>

> +static inline u32 calc_checksum(struct page *page)
> +{
> +	u32 checksum;
> +	void *addr = kmap_atomic(page, KM_USER0);
> +	checksum = jhash(addr, PAGE_SIZE, 17);

Why jhash2() is not used here ? It's faster and leads to smaller code size.

> +	kunmap_atomic(addr, KM_USER0);
> +	return checksum;
> +}

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/