From: Damien Le Moal <damien.lemoal@xxxxxxx> A REQ_OP_ZONE_REPORT bio is not a medium access command. Its number of sectors indicates the maximum size allowed for the report reply size and not an amount of sectors accessed from the device. REQ_OP_ZONE_REPORT bios should thus not be split depending on the target device maximum I/O length but passed as is. Note that it is the responsability of the target to remap and format the report reply. Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx> --- drivers/md/dm.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 1d98035..cd44928 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1098,7 +1098,8 @@ static int clone_bio(struct dm_target_io *tio, struct bio *bio, return r; } - bio_advance(clone, to_bytes(sector - clone->bi_iter.bi_sector)); + if (bio_op(bio) != REQ_OP_ZONE_REPORT) + bio_advance(clone, to_bytes(sector - clone->bi_iter.bi_sector)); clone->bi_iter.bi_size = to_bytes(len); if (bio_integrity(bio)) @@ -1275,7 +1276,11 @@ static int __split_and_process_non_flush(struct clone_info *ci) if (!dm_target_is_valid(ti)) return -EIO; - len = min_t(sector_t, max_io_len(ci->sector, ti), ci->sector_count); + if (bio_op(bio) == REQ_OP_ZONE_REPORT) + len = ci->sector_count; + else + len = min_t(sector_t, max_io_len(ci->sector, ti), + ci->sector_count); r = __clone_and_map_data_bio(ci, ti, ci->sector, &len); if (r < 0) -- 2.9.3 Western Digital Corporation (and its subsidiaries) E-mail Confidentiality Notice & Disclaimer: This e-mail and any files transmitted with it may contain confidential or legally privileged information of WDC and/or its affiliates, and are intended solely for the use of the individual or entity to which they are addressed. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited. If you have received this e-mail in error, please notify the sender immediately and delete the e-mail in its entirety from your system. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
