Re: [PATCH 02/26] block: Remove req_bio_endio()

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On 2/1/24 23:30, Damien Le Moal wrote:
@@ -916,9 +888,8 @@ bool blk_update_request(struct request *req, blk_status_t error,
  	if (blk_crypto_rq_has_keyslot(req) && nr_bytes >= blk_rq_bytes(req))
  		__blk_crypto_rq_put_keyslot(req);
- if (unlikely(error && !blk_rq_is_passthrough(req) &&
-		     !(req->rq_flags & RQF_QUIET)) &&
-		     !test_bit(GD_DEAD, &req->q->disk->state)) {
+	if (unlikely(error && !blk_rq_is_passthrough(req) && !quiet) &&
+	    !test_bit(GD_DEAD, &req->q->disk->state)) {

The new indentation of !test_bit(GD_DEAD, &req->q->disk->state) looks odd to me ...

  		blk_print_req_error(req, error);
  		trace_block_rq_error(req, error, nr_bytes);
  	}
@@ -930,12 +901,37 @@ bool blk_update_request(struct request *req, blk_status_t error,
  		struct bio *bio = req->bio;
  		unsigned bio_bytes = min(bio->bi_iter.bi_size, nr_bytes);
- if (bio_bytes == bio->bi_iter.bi_size)
+		if (unlikely(error))
+			bio->bi_status = error;
+
+		if (bio_bytes == bio->bi_iter.bi_size) {
  			req->bio = bio->bi_next;

The behavior has been changed compared to the original code: the original code
only tests bio_bytes if error == 0. The new code tests bio_bytes no matter what
value the 'error' variable has. Is this behavior change intentional?

Otherwise this patch looks good to me.

Thanks,

Bart.




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