block: update print_req_error()
Improve the print_req_error with additional request fields which are
helpful for debugging. Use newly introduced blk_op_str() to print the
REQ_OP_XXX in the string format.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/block/blk-core.c b/block/blk-core.c
index 129204d..5d1fc8e 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -212,11 +212,14 @@ static void print_req_error(struct request *req, blk_status_t status,
return;
printk_ratelimited(KERN_ERR
- "%s: %s error, dev %s, sector %llu op 0x%x flags 0x%x\n",
+ "%s: %s error, dev %s, 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),
- req->cmd_flags & ~REQ_OP_MASK);
+ 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,
+ IOPRIO_PRIO_CLASS(req->ioprio));
}
static void req_bio_endio(struct request *rq, struct bio *bio,