From: Vladimir Murzin <murzin.v@gmail.com>
To: Dan Streetman <ddstreet@ieee.org>
Cc: linux-mm@kvack.org, Seth Jennings <sjennings@variantweb.net>,
linux-kernel <linux-kernel@vger.kernel.org>,
Bob Liu <bob.liu@oracle.com>, Minchan Kim <minchan@kernel.org>,
Weijie Yang <weijie.yang@samsung.com>
Subject: Re: [PATCH] mm/zswap: change params from hidden to ro
Date: Wed, 20 Nov 2013 18:33:50 +0100 [thread overview]
Message-ID: <20131120173347.GA2369@hp530> (raw)
In-Reply-To: <1384965522-5788-1-git-send-email-ddstreet@ieee.org>
Hi Dan!
On Wed, Nov 20, 2013 at 11:38:42AM -0500, Dan Streetman wrote:
> The "compressor" and "enabled" params are currently hidden,
> this changes them to read-only, so userspace can tell if
> zswap is enabled or not and see what compressor is in use.
Could you elaborate more why this pice of information is necessary for
userspace?
Vladimir
>
> Signed-off-by: Dan Streetman <ddstreet@ieee.org>
> ---
> mm/zswap.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/mm/zswap.c b/mm/zswap.c
> index d93510c..36b268b 100644
> --- a/mm/zswap.c
> +++ b/mm/zswap.c
> @@ -77,12 +77,12 @@ static u64 zswap_duplicate_entry;
> **********************************/
> /* Enable/disable zswap (disabled by default, fixed at boot for now) */
> static bool zswap_enabled __read_mostly;
> -module_param_named(enabled, zswap_enabled, bool, 0);
> +module_param_named(enabled, zswap_enabled, bool, 0444);
>
> /* Compressor to be used by zswap (fixed at boot for now) */
> #define ZSWAP_COMPRESSOR_DEFAULT "lzo"
> static char *zswap_compressor = ZSWAP_COMPRESSOR_DEFAULT;
> -module_param_named(compressor, zswap_compressor, charp, 0);
> +module_param_named(compressor, zswap_compressor, charp, 0444);
>
> /* The maximum percentage of memory that the compressed pool can occupy */
> static unsigned int zswap_max_pool_percent = 20;
> --
> 1.8.3.1
>
> --
> To unsubscribe, send a message with 'unsubscribe linux-mm' in
> the body to majordomo@kvack.org. For more info on Linux MM,
> see: http://www.linux-mm.org/ .
> Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2013-11-20 17:34 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-20 16:38 [PATCH] mm/zswap: change params from hidden to ro Dan Streetman
2013-11-20 17:33 ` Vladimir Murzin [this message]
2013-11-20 17:52 ` Dan Streetman
2013-11-21 3:12 ` Weijie Yang
2013-11-21 22:36 ` Dan Streetman
2013-11-22 7:38 ` Vladimir Murzin
2013-11-22 17:18 ` Dan Streetman
2013-11-24 14:15 ` Vladimir Murzin
2013-11-22 17:21 ` Seth Jennings
2013-12-13 20:56 ` Dan Streetman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20131120173347.GA2369@hp530 \
--to=murzin.v@gmail.com \
--cc=bob.liu@oracle.com \
--cc=ddstreet@ieee.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=minchan@kernel.org \
--cc=sjennings@variantweb.net \
--cc=weijie.yang@samsung.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).