[PATCH 01/10] zcache: fix preemptable memory allocation in atomiccontext

[Xiao Guangrong]

zcache_do_preload uses ZCACHE_GFP_MASK to allocate memory that will be sleep,
but zcache_do_preload is called in zcache_put_page where IRQ is disabled

Fix it by use GFP_ATOMIC flag

Signed-off-by: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxxxxxx>
---
 drivers/staging/zcache/zcache-main.c |    5 -----
 1 files changed, 0 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/zcache/zcache-main.c b/drivers/staging/zcache/zcache-main.c
index 03f690b..d215fb4 100644
--- a/drivers/staging/zcache/zcache-main.c
+++ b/drivers/staging/zcache/zcache-main.c
@@ -45,13 +45,8 @@
 #include <linux/frontswap.h>
 #endif

-#if 0
 /* this is more aggressive but may cause other problems? */
 #define ZCACHE_GFP_MASK	(GFP_ATOMIC | __GFP_NORETRY | __GFP_NOWARN)
-#else
-#define ZCACHE_GFP_MASK \
-	(__GFP_FS | __GFP_NORETRY | __GFP_NOWARN | __GFP_NOMEMALLOC)
-#endif

 #define MAX_POOLS_PER_CLIENT 16

-- 
1.7.7.6

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