zram: Move default compression algorithm choice to Kconfig

Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> [@0ctobot: Enforce Zstandard compression algorithm] Signed-off-by: Adam W. Willis <return.of.octobot@gmail.com>
0ctobot · Dec 6, 2018 · af09634 · af09634
1 parent e91d01c
commit af09634
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diff --git a/drivers/block/zram/Kconfig b/drivers/block/zram/Kconfig
@@ -35,3 +35,7 @@ config ZRAM_MEMORY_TRACKING
 	  /sys/kernel/debug/zram/zramX/block_state.
 
 	  See Documentation/blockdev/zram.txt for more information.
+
+config ZRAM_DEFAULT_COMP_ALGORITHM
+	string "Default ZRAM algorithm"
+	default "zstd"
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
@@ -40,7 +40,7 @@ static DEFINE_IDR(zram_index_idr);
 static DEFINE_MUTEX(zram_index_mutex);
 
 static int zram_major;
-static const char *default_compressor = "lzo";
+static const char *default_compressor = CONFIG_ZRAM_DEFAULT_COMP_ALGORITHM;
 
 /* Module params (documentation at end) */
 static unsigned int num_devices = 1;