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authorJens Axboe <axboe@kernel.dk>2021-11-26 09:57:32 -0700
committerJens Axboe <axboe@kernel.dk>2021-11-26 09:57:32 -0700
commitd422f40163087408b56290156ba233fc5ada53e4 (patch)
treef93b94f3c73bbb46a5bd56416402dc355d05d724 /drivers
parent98b26a0e766724957b48301e3a6f7093a142d54b (diff)
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: kernel test robot <lkp@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/block/zram/zram_drv.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 08d7953ec5f1..25071126995b 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -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);