linux-kernel - [PATCH] print_req_error: Use dev_err

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Date:   Mon, 26 Oct 2020 11:05:15 -0500
From:   Tony Asleson <tasleson@...hat.com>
To:     axboe@...nel.dk, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] print_req_error: Use dev_err_ratelimited

Replace printk_ratelimited with dev_err_ratelimited which
adds dev_printk meta data. This is used by journald to
add disk ID information to the journal entry.

Signed-off-by: Tony Asleson <tasleson@...hat.com>
---
 block/blk-core.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c
index 10c08ac50697..ee5d63e54a11 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -216,16 +216,18 @@ EXPORT_SYMBOL_GPL(blk_status_to_errno);
 static void print_req_error(struct request *req, blk_status_t status,
 		const char *caller)
 {
+	struct device *dev;
 	int idx = (__force int)status;
 
 	if (WARN_ON_ONCE(idx >= ARRAY_SIZE(blk_errors)))
 		return;
 
-	printk_ratelimited(KERN_ERR
-		"%s: %s error, dev %s, sector %llu op 0x%x:(%s) flags 0x%x "
+	dev = req->rq_disk ? disk_to_dev(req->rq_disk) : NULL;
+
+	dev_err_ratelimited(dev,
+		"%s: %s error, sector %llu op 0x%x:(%s) flags 0x%x "
 		"phys_seg %u prio class %u\n",
 		caller, blk_errors[idx].name,
-		req->rq_disk ? req->rq_disk->disk_name : "?",
 		blk_rq_pos(req), req_op(req), blk_op_str(req_op(req)),
 		req->cmd_flags & ~REQ_OP_MASK,
 		req->nr_phys_segments,

base-commit: bbf5c979011a099af5dc76498918ed7df445635b
-- 
2.26.2