linux-kernel - [PATCH 5.10 142/545] blktrace: Trace remapped requests correctly

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Date:   Fri, 19 Aug 2022 17:38:32 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Junichi Nomura <junichi.nomura@....com>,
        Mike Snitzer <snitzer@...nel.org>,
        Mike Christie <michael.christie@...cle.com>,
        Li Zefan <lizf@...fujitsu.com>,
        Chaitanya Kulkarni <kch@...dia.com>,
        Bart Van Assche <bvanassche@....org>,
        Jens Axboe <axboe@...nel.dk>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 142/545] blktrace: Trace remapped requests correctly

From: Bart Van Assche <bvanassche@....org>

[ Upstream commit 22c80aac882f712897b88b7ea8f5a74ea19019df ]

Trace the remapped operation and its flags instead of only the data
direction of remapped operations. This issue was detected by analyzing
the warnings reported by sparse related to the new blk_opf_t type.

Reviewed-by: Jun'ichi Nomura <junichi.nomura@....com>
Cc: Mike Snitzer <snitzer@...nel.org>
Cc: Mike Christie <michael.christie@...cle.com>
Cc: Li Zefan <lizf@...fujitsu.com>
Cc: Chaitanya Kulkarni <kch@...dia.com>
Fixes: 1b9a9ab78b0a ("blktrace: use op accessors")
Signed-off-by: Bart Van Assche <bvanassche@....org>
Link: https://lore.kernel.org/r/20220714180729.1065367-11-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@...nel.dk>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 kernel/trace/blktrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 7f625400763b..15a376f85e09 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -1100,7 +1100,7 @@ static void blk_add_trace_rq_remap(void *ignore, struct request *rq, dev_t dev,
 	r.sector_from = cpu_to_be64(from);
 
 	__blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq),
-			rq_data_dir(rq), 0, BLK_TA_REMAP, 0,
+			req_op(rq), rq->cmd_flags, BLK_TA_REMAP, 0,
 			sizeof(r), &r, blk_trace_request_get_cgid(rq));
 	rcu_read_unlock();
 }
-- 
2.35.1