linux-kernel - [PATCH v2 03/12] md: bcache: fix improper use of bi_end

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Message-Id: <20251128083219.2332407-4-zhangshida@kylinos.cn>
Date: Fri, 28 Nov 2025 16:32:10 +0800
From: zhangshida <starzhangzsd@...il.com>
To: Johannes.Thumshirn@....com,
	hch@...radead.org,
	gruenba@...hat.com,
	ming.lei@...hat.com,
	siangkao@...ux.alibaba.com
Cc: linux-block@...r.kernel.org,
	linux-bcache@...r.kernel.org,
	nvdimm@...ts.linux.dev,
	virtualization@...ts.linux.dev,
	linux-nvme@...ts.infradead.org,
	gfs2@...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 v2 03/12] md: bcache: fix improper use of bi_end_io

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

Don't call bio->bi_end_io() directly. Use the bio_endio() helper
function instead, which handles completion more safely and uniformly.

Suggested-by: Christoph Hellwig <hch@...radead.org>
Signed-off-by: Shida Zhang <zhangshida@...inos.cn>
---
 drivers/md/bcache/request.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index af345dc6fde..82fdea7dea7 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -1104,7 +1104,7 @@ static void detached_dev_end_io(struct bio *bio)
 	}
 
 	kfree(ddip);
-	bio->bi_end_io(bio);
+	bio_endio(bio);
 }
 
 static void detached_dev_do_request(struct bcache_device *d, struct bio *bio,
@@ -1121,7 +1121,7 @@ static void detached_dev_do_request(struct bcache_device *d, struct bio *bio,
 	ddip = kzalloc(sizeof(struct detached_dev_io_private), GFP_NOIO);
 	if (!ddip) {
 		bio->bi_status = BLK_STS_RESOURCE;
-		bio->bi_end_io(bio);
+		bio_endio(bio);
 		return;
 	}
 
@@ -1136,7 +1136,7 @@ static void detached_dev_do_request(struct bcache_device *d, struct bio *bio,
 
 	if ((bio_op(bio) == REQ_OP_DISCARD) &&
 	    !bdev_max_discard_sectors(dc->bdev))
-		bio->bi_end_io(bio);
+		detached_dev_end_io(bio);
 	else
 		submit_bio_noacct(bio);
 }
-- 
2.34.1