The zram writeback code uses bio_add_page() to add a page to a newly
created bio. bio_add_page() can fail, but the return value is never
checked.
Use __bio_add_page() as adding a single page to a newly created bio is
guaranteed to succeed.
This brings us a step closer to marking bio_add_page() as __must_check.
Reviewed-by: Damien Le Moal
Reviewed-by: Sergey Senozhatsky
Signed-off-by: Johannes Thumshirn
---
drivers/block/zram/zram_drv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index f6d90f1ba5cf..b86691d2133e 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -700,7 +700,7 @@ static ssize_t writeback_store(struct device *dev,
bio_init(, zram->bdev, _vec, 1,
REQ_OP_WRITE | REQ_SYNC);
bio.bi_iter.bi_sector = blk_idx * (PAGE_SIZE >> 9);
- bio_add_page(, page, PAGE_SIZE, 0);
+ __bio_add_page(, page, PAGE_SIZE, 0);
/*
* XXX: A single page IO would be inefficient for write
--
2.40.1
