[PATCH] Revert "bcache: fix improper use of bi_end_io"

[colyli@fnnas.com]

From: Coly Li <colyli@fnnas.com>

This reverts commit 53280e398471f0bddbb17b798a63d41264651325.

The above commit tries to address the race in bio chain handling,
but it seems in detached_dev_end_io() simply using bio_endio() to
replace bio->bi_end_io() may introduce potential regression.

This patch revert the commit, let's wait for better fix from Shida.

Signed-off-by: Coly Li <colyli@fnnas.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Shida Zhang <zhangshida@kylinos.cn>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
---
 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 82fdea7dea7a..af345dc6fde1 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_endio(bio);
+	bio->bi_end_io(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_endio(bio);
+		bio->bi_end_io(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))
-		detached_dev_end_io(bio);
+		bio->bi_end_io(bio);
 	else
 		submit_bio_noacct(bio);
 }
-- 
2.47.3