[PATCH v5 11/20] zram: use __bio_add_page for adding single page to bio

Johannes Thumshirn
2023-05-02T11:10:10Z

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 <damien.lemoal@opensource.wdc.com>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
---
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 a84c4268257a..4b9ca6d41b92 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(&bio, zram->bdev, &bio_vec, 1,
REQ_OP_WRITE | REQ_SYNC);
bio.bi_iter.bi_sector = blk_idx * (PAGE_SIZE >> 9);
- bio_add_page(&bio, page, PAGE_SIZE, 0);
+ __bio_add_page(&bio, page, PAGE_SIZE, 0);

/*
* XXX: A single page IO would be inefficient for write
--
2.40.0