diff options
Diffstat (limited to 'block/blk-merge.c')
| -rw-r--r-- | block/blk-merge.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c index 3363b13219082..7f8a808b74c16 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -377,6 +377,7 @@ struct bio *__bio_split_to_limits(struct bio *bio, blkcg_bio_issue_init(split); bio_chain(split, bio); trace_block_split(split, bio->bi_iter.bi_sector); + WARN_ON_ONCE(bio_zone_write_plugging(bio)); submit_bio_noacct(bio); return split; } @@ -988,6 +989,9 @@ enum bio_merge_status bio_attempt_back_merge(struct request *req, blk_update_mixed_merge(req, bio, false); + if (req->rq_flags & RQF_ZONE_WRITE_PLUGGING) + blk_zone_write_plug_bio_merged(bio); + req->biotail->bi_next = bio; req->biotail = bio; req->__data_len += bio->bi_iter.bi_size; @@ -1003,6 +1007,14 @@ static enum bio_merge_status bio_attempt_front_merge(struct request *req, { const blk_opf_t ff = bio_failfast(bio); + /* + * A front merge for writes to sequential zones of a zoned block device + * can happen only if the user submitted writes out of order. Do not + * merge such write to let it fail. + */ + if (req->rq_flags & RQF_ZONE_WRITE_PLUGGING) + return BIO_MERGE_FAILED; + if (!ll_front_merge_fn(req, bio, nr_segs)) return BIO_MERGE_FAILED; |