[Cluster-devel] [PATCH 13/19] zram: use __bio_add_page for adding single page to bio

[Johannes Thumshirn]

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.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn at 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 aa490da3cef2..9179bd0f248c 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -760,7 +760,7 @@ static ssize_t writeback_store(struct device *dev,
 			 REQ_OP_WRITE | REQ_SYNC);
 		bio.bi_iter.bi_sector = blk_idx * (PAGE_SIZE >> 9);
 
-		bio_add_page(&bio, bvec.bv_page, bvec.bv_len,
+		__bio_add_page(&bio, bvec.bv_page, bvec.bv_len,
 				bvec.bv_offset);
 		/*
 		 * XXX: A single page IO would be inefficient for write
-- 
2.39.2