[PATCH] block: don't print I/O error warning for dead disks

[Christoph Hellwig <hch@xxxxxx>]

When a disk has been marked dead, don't print warnings for I/O errors
as they are very much expected.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
 block/blk-mq.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 8e659dc5fcf37..5b6a7c9d0d992 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -794,7 +794,8 @@ bool blk_update_request(struct request *req, blk_status_t error,
 #endif
 
 	if (unlikely(error && !blk_rq_is_passthrough(req) &&
-		     !(req->rq_flags & RQF_QUIET))) {
+		     !(req->rq_flags & RQF_QUIET)) &&
+		     !test_bit(GD_DEAD, &req->q->disk->state)) {
 		blk_print_req_error(req, error);
 		trace_block_rq_error(req, error, nr_bytes);
 	}
-- 
2.30.2