diff options
| -rw-r--r-- | Documentation/admin-guide/device-mapper/dm-crypt.rst | 10 | ||||
| -rw-r--r-- | drivers/md/dm.c | 27 |
2 files changed, 14 insertions, 23 deletions
diff --git a/Documentation/admin-guide/device-mapper/dm-crypt.rst b/Documentation/admin-guide/device-mapper/dm-crypt.rst index 8f4a3f889d43..bc28a9527ee5 100644 --- a/Documentation/admin-guide/device-mapper/dm-crypt.rst +++ b/Documentation/admin-guide/device-mapper/dm-crypt.rst @@ -67,7 +67,7 @@ Parameters:: the value passed in <key_size>. <key_type> - Either 'logon' or 'user' kernel key type. + Either 'logon', 'user' or 'encrypted' kernel key type. <key_description> The kernel keyring key description crypt target should look for @@ -121,6 +121,14 @@ submit_from_crypt_cpus thread because it benefits CFQ to have writes submitted using the same context. +no_read_workqueue + Bypass dm-crypt internal workqueue and process read requests synchronously. + +no_write_workqueue + Bypass dm-crypt internal workqueue and process write requests synchronously. + This option is automatically enabled for host-managed zoned block devices + (e.g. host-managed SMR hard-disks). + integrity:<bytes>:<type> The device requires additional <bytes> metadata per-sector stored in per-bio integrity structure. This metadata must by provided diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 4a40df8af7d3..6ed05ca65a0f 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1724,23 +1724,6 @@ out: return ret; } -static void dm_queue_split(struct mapped_device *md, struct dm_target *ti, struct bio **bio) -{ - unsigned len, sector_count; - - sector_count = bio_sectors(*bio); - len = min_t(sector_t, max_io_len((*bio)->bi_iter.bi_sector, ti), sector_count); - - if (sector_count > len) { - struct bio *split = bio_split(*bio, len, GFP_NOIO, &md->queue->bio_split); - - bio_chain(split, *bio); - trace_block_split(md->queue, split, (*bio)->bi_iter.bi_sector); - submit_bio_noacct(*bio); - *bio = split; - } -} - static blk_qc_t dm_process_bio(struct mapped_device *md, struct dm_table *map, struct bio *bio) { @@ -1761,21 +1744,21 @@ static blk_qc_t dm_process_bio(struct mapped_device *md, } /* - * If in ->queue_bio we need to use blk_queue_split(), otherwise + * If in ->submit_bio we need to use blk_queue_split(), otherwise * queue_limits for abnormal requests (e.g. discard, writesame, etc) * won't be imposed. + * If called from dm_wq_work() for deferred bio processing, bio + * was already handled by following code with previous ->submit_bio. */ if (current->bio_list) { if (is_abnormal_io(bio)) blk_queue_split(&bio); - else - dm_queue_split(md, ti, &bio); + /* regular IO is split by __split_and_process_bio */ } if (dm_get_md_type(md) == DM_TYPE_NVME_BIO_BASED) return __process_bio(md, map, bio, ti); - else - return __split_and_process_bio(md, map, bio); + return __split_and_process_bio(md, map, bio); } static blk_qc_t dm_submit_bio(struct bio *bio) |