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Subject[PATCH] zram: move backing_dev under macro CONFIG_ZRAM_WRITEBACK
Date
From: Yue Hu <huyue2@yulong.com>

backing_dev is never used when not enable CONFIG_ZRAM_WRITEBACK and
it's introduced from writeback feature. So it's needless also affect
readability in that case.

Signed-off-by: Yue Hu <huyue2@yulong.com>
---
drivers/block/zram/zram_drv.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h
index f2fd46d..1cb3b9a 100644
--- a/drivers/block/zram/zram_drv.h
+++ b/drivers/block/zram/zram_drv.h
@@ -112,8 +112,8 @@ struct zram {
* zram is claimed so open request will be failed
*/
bool claim; /* Protected by bdev->bd_mutex */
- struct file *backing_dev;
#ifdef CONFIG_ZRAM_WRITEBACK
+ struct file *backing_dev;
spinlock_t wb_limit_lock;
bool wb_limit_enable;
u64 bd_wb_limit;
--
1.9.1
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