Commit d422f401 authored by Jens Axboe's avatar Jens Axboe
Browse files

zram: only make zram_wb_devops for CONFIG_ZRAM_WRITEBACK 

If writeback isn't configured, then we get the following warning when
compiling zram:

drivers/block/zram/zram_drv.c:1824:45: warning: unused variable 'zram_wb_devops' [-Wunused-const-variable]

Make sure we only define the block_device_operations if that option is
enabled.

Link: https://lore.kernel.org/lkml/202111261614.gCJMqcyh-lkp@intel.com/


Reported-by: default avatarkernel test robot <lkp@intel.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 98b26a0e

drivers/block/zram/zram_drv.c

+2 −0
Original line number Diff line number Diff line
@@ -1853,12 +1853,14 @@ static const struct block_device_operations zram_devops = { 
	.owner = THIS_MODULE

};



#ifdef CONFIG_ZRAM_WRITEBACK

static const struct block_device_operations zram_wb_devops = {

	.open = zram_open,

	.submit_bio = zram_submit_bio,

	.swap_slot_free_notify = zram_slot_free_notify,

	.owner = THIS_MODULE

};

#endif



static DEVICE_ATTR_WO(compact);

static DEVICE_ATTR_RW(disksize);