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| author | Christoph Hellwig <hch@lst.de> | 2018-10-12 19:08:49 +0900 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-10-25 11:17:40 -0600 |
| commit | e76239a3748c90a8b0e197f8f4544a8ce52f126e (patch) | |
| tree | 4e555b7fe24f1642eecc1cfbca563897cfeb6d4a /block/blk-mq-debugfs.c | |
| parent | 965b652e901886ea54f93c60027b5be76328d958 (diff) | |
| download | linux-stable-e76239a3748c90a8b0e197f8f4544a8ce52f126e.tar.gz linux-stable-e76239a3748c90a8b0e197f8f4544a8ce52f126e.tar.bz2 linux-stable-e76239a3748c90a8b0e197f8f4544a8ce52f126e.zip | |
block: add a report_zones method
Dispatching a report zones command through the request queue is a major
pain due to the command reply payload rewriting necessary. Given that
blkdev_report_zones() is executing everything synchronously, implement
report zones as a block device file operation instead, allowing major
simplification of the code in many places.
sd, null-blk, dm-linear and dm-flakey being the only block device
drivers supporting exposing zoned block devices, these drivers are
modified to provide the device side implementation of the
report_zones() block device file operation.
For device mappers, a new report_zones() target type operation is
defined so that the upper block layer calls blkdev_report_zones() can
be propagated down to the underlying devices of the dm targets.
Implementation for this new operation is added to the dm-linear and
dm-flakey targets.
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
[Damien]
* Changed method block_device argument to gendisk
* Various bug fixes and improvements
* Added support for null_blk, dm-linear and dm-flakey.
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq-debugfs.c')
| -rw-r--r-- | block/blk-mq-debugfs.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c index 41b86f50d126..10b284a1f18d 100644 --- a/block/blk-mq-debugfs.c +++ b/block/blk-mq-debugfs.c @@ -283,7 +283,6 @@ static const char *const op_name[] = { REQ_OP_NAME(WRITE), REQ_OP_NAME(FLUSH), REQ_OP_NAME(DISCARD), - REQ_OP_NAME(ZONE_REPORT), REQ_OP_NAME(SECURE_ERASE), REQ_OP_NAME(ZONE_RESET), REQ_OP_NAME(WRITE_SAME), |