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* [PATCH] block: improve print_req_error
@ 2019-05-20 14:13 Christoph Hellwig
  2019-05-20 14:27 ` Hannes Reinecke
  2019-05-20 17:15 ` Chaitanya Kulkarni
  0 siblings, 2 replies; 4+ messages in thread
From: Christoph Hellwig @ 2019-05-20 14:13 UTC (permalink / raw)
  To: axboe; +Cc: linux-block

Print the calling function instead of print_req_error as a prefix, and
print the operation and op_flags separately instrad of the whole field.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 block/blk-core.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c
index 419d600e6637..b1f7e244340e 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -167,18 +167,20 @@ int blk_status_to_errno(blk_status_t status)
 }
 EXPORT_SYMBOL_GPL(blk_status_to_errno);
 
-static void print_req_error(struct request *req, blk_status_t status)
+static void print_req_error(struct request *req, blk_status_t status,
+		const char *caller)
 {
 	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 flags %x\n",
-				__func__, blk_errors[idx].name,
-				req->rq_disk ?  req->rq_disk->disk_name : "?",
-				(unsigned long long)blk_rq_pos(req),
-				req->cmd_flags);
+	printk_ratelimited(KERN_ERR
+		"%s: %s error, dev %s, sector %llu op 0x%x flags 0x%x\n",
+		caller, blk_errors[idx].name,
+		req->rq_disk ?  req->rq_disk->disk_name : "?",
+		blk_rq_pos(req), req_op(req),
+		req->cmd_flags & ~REQ_OP_MASK);
 }
 
 static void req_bio_endio(struct request *rq, struct bio *bio,
@@ -1418,7 +1420,7 @@ bool blk_update_request(struct request *req, blk_status_t error,
 
 	if (unlikely(error && !blk_rq_is_passthrough(req) &&
 		     !(req->rq_flags & RQF_QUIET)))
-		print_req_error(req, error);
+		print_req_error(req, error, __func__);
 
 	blk_account_io_completion(req, nr_bytes);
 
-- 
2.20.1


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2019-05-20 14:13 [PATCH] block: improve print_req_error Christoph Hellwig
2019-05-20 14:27 ` Hannes Reinecke
2019-05-20 17:15 ` Chaitanya Kulkarni
2019-05-20 17:34   ` Chaitanya Kulkarni

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