linux-kernel - [PATCH for-6.18/block 05/16] blk-crypto: fix missing blktrace bio split events

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Message-Id: <20250905070643.2533483-6-yukuai1@huaweicloud.com>
Date: Fri,  5 Sep 2025 15:06:32 +0800
From: Yu Kuai <yukuai1@...weicloud.com>
To: hch@...radead.org,
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Subject: [PATCH for-6.18/block 05/16] blk-crypto: fix missing blktrace bio split events

From: Yu Kuai <yukuai3@...wei.com>

trace_block_split() is missing, resulting in blktrace inability to catch
BIO split events and making it harder to analyze the BIO sequence.

Cc: stable@...r.kernel.org
Fixes: 488f6682c832 ("block: blk-crypto-fallback for Inline Encryption")
Signed-off-by: Yu Kuai <yukuai3@...wei.com>
---
 block/blk-crypto-fallback.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/block/blk-crypto-fallback.c b/block/blk-crypto-fallback.c
index 005c9157ffb3..1f9a4c33d2bd 100644
--- a/block/blk-crypto-fallback.c
+++ b/block/blk-crypto-fallback.c
@@ -18,6 +18,7 @@
 #include <linux/module.h>
 #include <linux/random.h>
 #include <linux/scatterlist.h>
+#include <trace/events/block.h>
 
 #include "blk-cgroup.h"
 #include "blk-crypto-internal.h"
@@ -231,7 +232,9 @@ static bool blk_crypto_fallback_split_bio_if_needed(struct bio **bio_ptr)
 			bio->bi_status = BLK_STS_RESOURCE;
 			return false;
 		}
+
 		bio_chain(split_bio, bio);
+		trace_block_split(split_bio, bio->bi_iter.bi_sector);
 		submit_bio_noacct(bio);
 		*bio_ptr = split_bio;
 	}
-- 
2.39.2