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
| ||
|
Date: Tue, 2 Dec 2014 19:36:18 +1100
From: NeilBrown <neilb@...e.de>
To: zhangxiao <xiao.zhang@...driver.com>
Cc: <linux-raid@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
dm-devel@...hat.com
Subject: Re: The DM_BUFIO_HASH_BITS is defined as 20, any plan to make it
flexible?
On Tue, 2 Dec 2014 16:32:14 +0800 zhangxiao <xiao.zhang@...driver.com> wrote:
> Hi NeilBrown,
>
> See drivers/md/dm-bufio.c as below:
> 50 /*
> 51 * Buffer hash
> 52 */
> 53 #define DM_BUFIO_HASH_BITS 20
> 54 #define DM_BUFIO_HASH(block) \
> 55 ((((block) >> DM_BUFIO_HASH_BITS) ^ (block)) & \
> 56 ((1 << DM_BUFIO_HASH_BITS) - 1))
> "drivers/md/dm-bufio.c" 1854L, 45375C
>
>
> DM_BUFIO_HASH_BITS was defined as 20 and it maybe not fit for some
> use case with limited resources. Do we have any plan to make it more
> flexible? Like module parameter or something else?
>
Thanks, but this question should be address to:
DEVICE-MAPPER (LVM)
M: Alasdair Kergon <agk@...hat.com>
M: Mike Snitzer <snitzer@...hat.com>
M: dm-devel@...hat.com
L: dm-devel@...hat.com
W: http://sources.redhat.com/dm
Q: http://patchwork.kernel.org/project/dm-devel/list/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git
T: quilt http://people.redhat.com/agk/patches/linux/editing/
S: Maintained
F: Documentation/device-mapper/
F: drivers/md/dm*
F: drivers/md/persistent-data/
F: include/linux/device-mapper.h
F: include/linux/dm-*.h
F: include/uapi/linux/dm-*.h
NeilBrown
Content of type "application/pgp-signature" skipped
Powered by blists - more mailing lists