From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Date: Tue, 26 Jul 2016 22:22:56 +0000 (-0700)
Subject: UPSTREAM: zram: add more compression algorithms
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5edf1e0771fa8282a490b587eb371ea413dec15f;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

UPSTREAM: zram: add more compression algorithms

Add "deflate", "lz4hc", "842" algorithms to the list of known
compression backends.  The real availability of those algorithms,
however, depends on the corresponding CONFIG_CRYPTO_FOO config options.

[sergey.senozhatsky@gmail.com: zram-add-more-compression-algorithms-v3]
  Link: http://lkml.kernel.org/r/20160604024902.11778-7-sergey.senozhatsky@gmail.com
Link: http://lkml.kernel.org/r/20160531122017.2878-8-sergey.senozhatsky@gmail.com
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

(cherry picked from commit eb9f56d82547db407779967a2251ea28969245b0)
Signed-off-by: Peter Kalauskas <peskal@google.com>
Bug: 112488418
Change-Id: Ie46c7676363ef13c559b45dab4968e2cc48a6cbe
---

diff --git a/drivers/block/zram/zcomp.c b/drivers/block/zram/zcomp.c
index 9ab45d41624b..32e521a2b8c8 100644
--- a/drivers/block/zram/zcomp.c
+++ b/drivers/block/zram/zcomp.c
@@ -22,6 +22,15 @@ static const char * const backends[] = {
 	"lzo",
 #if IS_ENABLED(CONFIG_CRYPTO_LZ4)
 	"lz4",
+#endif
+#if IS_ENABLED(CONFIG_CRYPTO_DEFLATE)
+	"deflate",
+#endif
+#if IS_ENABLED(CONFIG_CRYPTO_LZ4HC)
+	"lz4hc",
+#endif
+#if IS_ENABLED(CONFIG_CRYPTO_842)
+	"842",
 #endif
 	NULL
 };