lkml.org 
[lkml]   [2013]   [Nov]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] mm/zswap: change params from hidden to ro
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>


\
 
 \ /
  Last update: 2013-11-20 19:01    [W:0.115 / U:0.324 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site