linux-kernel - [PATCH v3 4/9] block: export bio_chain_and

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Message-Id: <20251129090122.2457896-5-zhangshida@kylinos.cn>
Date: Sat, 29 Nov 2025 17:01:17 +0800
From: zhangshida <starzhangzsd@...il.com>
To: Johannes.Thumshirn@....com,
	hch@...radead.org,
	agruenba@...hat.com,
	ming.lei@...hat.com,
	hsiangkao@...ux.alibaba.com,
	csander@...estorage.com
Cc: linux-block@...r.kernel.org,
	linux-bcache@...r.kernel.org,
	nvdimm@...ts.linux.dev,
	virtualization@...ts.linux.dev,
	ntfs3@...ts.linux.dev,
	linux-xfs@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	zhangshida@...inos.cn,
	starzhangzsd@...il.com
Subject: [PATCH v3 4/9] block: export bio_chain_and_submit

From: Shida Zhang <zhangshida@...inos.cn>

Export the bio_chain_and_submit function to make it available as a
common utility. This will allow replacing repetitive bio chaining
patterns found in multiple locations throughout the codebase.

Signed-off-by: Shida Zhang <zhangshida@...inos.cn>
---
 block/bio.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/block/bio.c b/block/bio.c
index 097c1cd2054..7aa4a1d3672 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -368,6 +368,7 @@ struct bio *bio_chain_and_submit(struct bio *prev, struct bio *new)
 	}
 	return new;
 }
+EXPORT_SYMBOL_GPL(bio_chain_and_submit);
 
 struct bio *blk_next_bio(struct bio *bio, struct block_device *bdev,
 		unsigned int nr_pages, blk_opf_t opf, gfp_t gfp)
-- 
2.34.1