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authorAjay Joshi <ajay.joshi@wdc.com>2019-10-27 23:05:45 +0900
committerJens Axboe <axboe@kernel.dk>2019-11-07 06:31:48 -0700
commit6c1b1da58f8c7a697a88ae35afeba196fc7b701e (patch)
tree03a8d6592cc3ea609d37c989fa5c1a533d7b66d6 /block/blk-core.c
parentc7a1d926dc4076aadad187614500afcd8de78818 (diff)
block: add zone open, close and finish operations
Zoned block devices (ZBC and ZAC devices) allow an explicit control over the condition (state) of zones. The operations allowed are: * Open a zone: Transition to open condition to indicate that a zone will actively be written * Close a zone: Transition to closed condition to release the drive resources used for writing to a zone * Finish a zone: Transition an open or closed zone to the full condition to prevent write operations To enable this control for in-kernel zoned block device users, define the new request operations REQ_OP_ZONE_OPEN, REQ_OP_ZONE_CLOSE and REQ_OP_ZONE_FINISH as well as the generic function blkdev_zone_mgmt() for submitting these operations on a range of zones. This results in blkdev_reset_zones() removal and replacement with this new zone magement function. Users of blkdev_reset_zones() (f2fs and dm-zoned) are updated accordingly. Contains contributions from Matias Bjorling, Hans Holmberg, Dmitry Fomichev, Keith Busch, Damien Le Moal and Christoph Hellwig. Reviewed-by: Javier González <javier@javigon.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ajay Joshi <ajay.joshi@wdc.com> Signed-off-by: Matias Bjorling <matias.bjorling@wdc.com> Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com> Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com> Signed-off-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-core.c')
-rw-r--r--block/blk-core.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index ae506ac2dd48..f0d82227a2fc 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -132,6 +132,9 @@ static const char *const blk_op_name[] = {
REQ_OP_NAME(SECURE_ERASE),
REQ_OP_NAME(ZONE_RESET),
REQ_OP_NAME(ZONE_RESET_ALL),
+ REQ_OP_NAME(ZONE_OPEN),
+ REQ_OP_NAME(ZONE_CLOSE),
+ REQ_OP_NAME(ZONE_FINISH),
REQ_OP_NAME(WRITE_SAME),
REQ_OP_NAME(WRITE_ZEROES),
REQ_OP_NAME(SCSI_IN),
@@ -849,10 +852,10 @@ static inline int blk_partition_remap(struct bio *bio)
goto out;
/*
- * Zone reset does not include bi_size so bio_sectors() is always 0.
- * Include a test for the reset op code and perform the remap if needed.
+ * Zone management bios do not have a sector count but they do have
+ * a start sector filled out and need to be remapped.
*/
- if (bio_sectors(bio) || bio_op(bio) == REQ_OP_ZONE_RESET) {
+ if (bio_sectors(bio) || op_is_zone_mgmt(bio_op(bio))) {
if (bio_check_eod(bio, part_nr_sects_read(p)))
goto out;
bio->bi_iter.bi_sector += p->start_sect;
@@ -936,6 +939,9 @@ generic_make_request_checks(struct bio *bio)
goto not_supported;
break;
case REQ_OP_ZONE_RESET:
+ case REQ_OP_ZONE_OPEN:
+ case REQ_OP_ZONE_CLOSE:
+ case REQ_OP_ZONE_FINISH:
if (!blk_queue_is_zoned(q))
goto not_supported;
break;