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Subject[PATCH 01/10] zcache: fix preemptable memory allocation in atomic context
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@linux.vnet.ibm.com>
---
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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