From: Yue Hu <huyue2@xxxxxxxxxx> 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@xxxxxxxxxx> Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx> Acked-by: Minchan Kim <minchan@xxxxxxxxxx> --- 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 419a7e8..6e73dc3 100644 --- a/drivers/block/zram/zram_drv.h +++ b/drivers/block/zram/zram_drv.h @@ -113,8 +113,8 @@ 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