From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Balbir Singh To: CC: , , "Balbir Singh" Subject: [PATCH] Add cmd_flags to print_req_error Date: Mon, 29 Oct 2018 00:57:32 +0000 Message-ID: <20181029005732.21040-1-sblbir@amazon.com> MIME-Version: 1.0 Content-Type: text/plain List-ID: I ran into a bug where after hibernation due to incompatible backends, the block driver returned BLK_STS_NOTSUPP, with the current message it's hard to find out what the command flags were. Adding req->cmd_flags help make the problem easier to diagnose. Signed-off-by: Balbir Singh Reviewed-by: Eduardo Valentin --- The patch has been just compile tested only. block/blk-core.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index cdfabc5646da..28b8f93835a7 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -256,10 +256,11 @@ static void print_req_error(struct request *req, blk_status_t status) if (WARN_ON_ONCE(idx >= ARRAY_SIZE(blk_errors))) return; - printk_ratelimited(KERN_ERR "%s: %s error, dev %s, sector %llu\n", - __func__, blk_errors[idx].name, req->rq_disk ? - req->rq_disk->disk_name : "?", - (unsigned long long)blk_rq_pos(req)); + printk_ratelimited(KERN_ERR "%s: %s error, dev %s, sector %llu flags %llx\n", + __func__, blk_errors[idx].name, + req->rq_disk ? req->rq_disk->disk_name : "?", + (unsigned long long)blk_rq_pos(req), + (unsigned long long)req->cmd_flags); } static void req_bio_endio(struct request *rq, struct bio *bio, -- 2.16.2