linux-kernel - Re: [PATCH] mm/zswap: change params from hidden to ro

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Message-ID: <CALZtONBo-6_BKKT62BTzH3qyD4A+bxj781yGPa00fuFQ4TYdBQ@mail.gmail.com>
Date:	Fri, 13 Dec 2013 15:56:31 -0500
From:	Dan Streetman <ddstreet@...e.org>
To:	Seth Jennings <sjennings@...iantweb.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-mm@...ck.org, linux-kernel <linux-kernel@...r.kernel.org>,
	Bob Liu <bob.liu@...cle.com>, Minchan Kim <minchan@...nel.org>,
	Weijie Yang <weijie.yang@...sung.com>
Subject: Re: [PATCH] mm/zswap: change params from hidden to ro

On Fri, Nov 22, 2013 at 12:21 PM, Seth Jennings
<sjennings@...iantweb.net> wrote:
> 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.
>
> Reasonable to me.
>
> Acked-by: Seth Jennings <sjennings@...iantweb.net>

Ping to see if this patch could get picked up.

>
>>
>> Signed-off-by: Dan Streetman <ddstreet@...e.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
>>
>> --
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