[OpenWrt-Devel] [PATCH] zram-swap: support swap priority

[John Crispin]

On 09/01/2020 19:27, Maxim Storchak wrote:
> If zram-backed swap is added after an existing swap, it gets a lower
> priority. Assiming that usually all other swaps are slower, there should
> be a way to assign a higher priority to zram swap.
> 
> Signed-off-by: Maxim Storchak <m.storchak at gmail.com>
Merged, thanks !
> ---
>   package/system/zram-swap/Makefile        | 2 +-
>   package/system/zram-swap/files/zram.init | 4 +++-
>   2 files changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/package/system/zram-swap/Makefile b/package/system/zram-swap/Makefile
> index bcada98a81..ee5e85927f 100644
> --- a/package/system/zram-swap/Makefile
> +++ b/package/system/zram-swap/Makefile
> @@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
>   
>   PKG_NAME:=zram-swap
>   PKG_VERSION:=1.1
> -PKG_RELEASE:=3
> +PKG_RELEASE:=4
>   
>   PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
>   
> diff --git a/package/system/zram-swap/files/zram.init b/package/system/zram-swap/files/zram.init
> index ae432f3b00..49140ad406 100755
> --- a/package/system/zram-swap/files/zram.init
> +++ b/package/system/zram-swap/files/zram.init
> @@ -172,6 +172,8 @@ start()
>   	local zram_size="$( zram_getsize )"
>   	local zram_dev="$( zram_getdev )"
>   	zram_applicable "$zram_dev" || return 1
> +	local zram_priority="$( uci -q get system. at system[0].zram_priority )"
> +	zram_priority=${zram_priority:+-p $zram_priority}
>   
>   	logger -s -t zram_start -p daemon.debug "activating '$zram_dev' for swapping ($zram_size MegaBytes)"
>   
> @@ -180,7 +182,7 @@ start()
>   	zram_comp_streams "$zram_dev"
>   	echo $(( $zram_size * 1024 * 1024 )) >"/sys/block/$( basename "$zram_dev" )/disksize"
>   	mkswap "$zram_dev"
> -	swapon "$zram_dev"
> +	swapon $zram_priority "$zram_dev"
>   }
>   
>   stop()
> 


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