linux-kernel - Re: [PATCH 05/10] Reduce per table entry overhead by 4 bytes

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: <AANLkTikERp9DOpK=1R_UdjuNrS6dbAkX+Q5kysgVcv0k@mail.gmail.com>
Date:	Mon, 9 Aug 2010 21:59:30 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	Nitin Gupta <ngupta@...are.org>
Cc:	Pekka Enberg <penberg@...helsinki.fi>,
	Minchan Kim <minchan.kim@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Greg KH <greg@...ah.com>,
	Linux Driver Project <devel@...uxdriverproject.org>,
	linux-mm <linux-mm@...ck.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 05/10] Reduce per table entry overhead by 4 bytes

On Mon, Aug 9, 2010 at 8:26 PM, Nitin Gupta <ngupta@...are.org> wrote:
> Each zram device maintains an array (table) that maps
> index within the device to the location of corresponding
> compressed chunk. Currently we store 'struct page' pointer,
> offset with page and various flags separately which takes
> 12 bytes per table entry. Now all these are encoded in a
> single 'phys_add_t' value which results in savings of 4 bytes
> per entry (except on PAE systems).
>
> Unfortunately, cleanups related to some variable renames
> were mixed in this patch. So, please bear some additional
> noise.

The noise makes this patch pretty difficult to review properly. Care
to spilt the patch into two pieces?
--
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/