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Subject[PATCH] zram: add zstd to the supported algorithms list
Date
Add ZSTD to the list of supported compression algorithms.

Official benchmarks [1]:

Compressor name Ratio Compression Decompress.
zstd 1.1.3 -1 2.877 430 MB/s 1110 MB/s
zlib 1.2.8 -1 2.743 110 MB/s 400 MB/s
brotli 0.5.2 -0 2.708 400 MB/s 430 MB/s
quicklz 1.5.0 -1 2.238 550 MB/s 710 MB/s
lzo1x 2.09 -1 2.108 650 MB/s 830 MB/s
lz4 1.7.5 2.101 720 MB/s 3600 MB/s
snappy 1.1.3 2.091 500 MB/s 1650 MB/s
lzf 3.6 -1 2.077 400 MB/s 860 MB/s

[1] https://github.com/facebook/zstd

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
---
drivers/block/zram/zcomp.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/block/zram/zcomp.c b/drivers/block/zram/zcomp.c
index 5b8992beffec..cc66daec7bbc 100644
--- a/drivers/block/zram/zcomp.c
+++ b/drivers/block/zram/zcomp.c
@@ -31,6 +31,9 @@ static const char * const backends[] = {
#endif
#if IS_ENABLED(CONFIG_CRYPTO_842)
"842",
+#endif
+#if IS_ENABLED(CONFIG_CRYPTO_ZSTD)
+ "zstd",
#endif
NULL
};
--
2.14.1
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