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Subject[PATCH 04/10] zcache: remove unnecessary check of config option dependence
zcache is enabled only if one of CONFIG_CLEANCACHE and CONFIG_FRONTSWAP is
enabled, see the Kconfig:
depends on (CLEANCACHE || FRONTSWAP) && CRYPTO=y && X86
So, we can remove the check in the source code

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
---
drivers/staging/zcache/zcache-main.c | 7 ++-----
1 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/zcache/zcache-main.c b/drivers/staging/zcache/zcache-main.c
index 74a3ac8..82d752d 100644
--- a/drivers/staging/zcache/zcache-main.c
+++ b/drivers/staging/zcache/zcache-main.c
@@ -35,9 +35,6 @@

#include "../zsmalloc/zsmalloc.h"

-#if (!defined(CONFIG_CLEANCACHE) && !defined(CONFIG_FRONTSWAP))
-#error "zcache is useless without CONFIG_CLEANCACHE or CONFIG_FRONTSWAP"
-#endif
#ifdef CONFIG_CLEANCACHE
#include <linux/cleancache.h>
#endif
@@ -2017,7 +2014,7 @@ static int __init zcache_init(void)
goto out;
}
#endif /* CONFIG_SYSFS */
-#if defined(CONFIG_CLEANCACHE) || defined(CONFIG_FRONTSWAP)
+
if (zcache_enabled) {
unsigned int cpu;

@@ -2048,7 +2045,7 @@ static int __init zcache_init(void)
pr_err("zcache: can't create client\n");
goto out;
}
-#endif
+
#ifdef CONFIG_CLEANCACHE
if (zcache_enabled && use_cleancache) {
struct cleancache_ops old_ops;
--
1.7.7.6


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