From: Kefeng Wang <wangkefeng.wang@huawei.com>
To: Johannes Weiner <hannes@cmpxchg.org>,
Yosry Ahmed <yosryahmed@google.com>,
Nhat Pham <nphamcs@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Chengming Zhou <chengming.zhou@linux.dev>,
Huacai Chen <chenhuacai@kernel.org>,
Minchan Kim <minchan@kernel.org>,
Sergey Senozhatsky <senozhatsky@chromium.org>,
<linux-mm@kvack.org>, <linux-block@vger.kernel.org>,
Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: [PATCH 3/5] zram: support deflate compressor
Date: Fri, 23 Feb 2024 11:55:46 +0800 [thread overview]
Message-ID: <20240223035548.2591882-4-wangkefeng.wang@huawei.com> (raw)
In-Reply-To: <20240223035548.2591882-1-wangkefeng.wang@huawei.com>
Add deflate compressor support, also it is prepare for unifying the
default compressor compressor for zram and zswap.
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
---
drivers/block/zram/Kconfig | 7 ++++++-
drivers/block/zram/zcomp.c | 3 +++
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/block/zram/Kconfig b/drivers/block/zram/Kconfig
index 0cee425da0f5..b007dda16430 100644
--- a/drivers/block/zram/Kconfig
+++ b/drivers/block/zram/Kconfig
@@ -2,7 +2,7 @@
config ZRAM
tristate "Compressed RAM block device support"
depends on SWAP && SYSFS
- depends on CRYPTO_LZO || CRYPTO_ZSTD || CRYPTO_LZ4 || CRYPTO_LZ4HC || CRYPTO_842
+ depends on CRYPTO_LZO || CRYPTO_ZSTD || CRYPTO_LZ4 || CRYPTO_LZ4HC || CRYPTO_842 || CRYPTO_DEFLATE
select ZSMALLOC
help
Creates virtual block devices called /dev/zramX (X = 0, 1, ...).
@@ -20,6 +20,10 @@ choice
default ZRAM_DEF_COMP_LZORLE
depends on ZRAM
+config ZRAM_DEF_COMP_DEFLATE
+ bool "Deflate"
+ depends on CRYPTO_DEFLATE
+
config ZRAM_DEF_COMP_LZORLE
bool "lzo-rle"
depends on CRYPTO_LZO
@@ -48,6 +52,7 @@ endchoice
config ZRAM_DEF_COMP
string
+ default "deflate" if ZRAM_DEF_COMP_DEFLATE
default "lzo-rle" if ZRAM_DEF_COMP_LZORLE
default "zstd" if ZRAM_DEF_COMP_ZSTD
default "lz4" if ZRAM_DEF_COMP_LZ4
diff --git a/drivers/block/zram/zcomp.c b/drivers/block/zram/zcomp.c
index 8237b08c49d8..1f9a431f771e 100644
--- a/drivers/block/zram/zcomp.c
+++ b/drivers/block/zram/zcomp.c
@@ -16,6 +16,9 @@
#include "zcomp.h"
static const char * const backends[] = {
+#if IS_ENABLED(CONFIG_CRYPTO_DEFLATE)
+ "deflate",
+#endif
#if IS_ENABLED(CONFIG_CRYPTO_LZO)
"lzo",
"lzo-rle",
--
2.27.0
next prev parent reply other threads:[~2024-02-23 3:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-23 3:55 [PATCH 0/5] mm: unify default compressor algorithm for zram/zswap Kefeng Wang
2024-02-23 3:55 ` [PATCH 1/5] zram: zcomp: remove zcomp_set_max_streams() declaration Kefeng Wang
2024-02-23 3:55 ` [PATCH 2/5] zram: make zram depends on SWAP Kefeng Wang
2024-02-23 4:39 ` Sergey Senozhatsky
2024-02-23 3:55 ` Kefeng Wang [this message]
2024-02-23 3:55 ` [PATCH 4/5] mm: zswap: default to lzo-rle instead of lzo Kefeng Wang
2024-02-23 3:55 ` [PATCH 5/5] mm: unify default compressor algorithm for zswap and zram Kefeng Wang
2024-02-23 4:46 ` [PATCH 0/5] mm: unify default compressor algorithm for zram/zswap Yosry Ahmed
2024-02-23 6:43 ` Kefeng Wang
2024-02-23 4:51 ` Sergey Senozhatsky
2024-02-23 6:45 ` Kefeng Wang
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