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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 /include/trace | |
| parent | 965b652e901886ea54f93c60027b5be76328d958 (diff) | |
| download | linux-e76239a3748c90a8b0e197f8f4544a8ce52f126e.tar.gz | |
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 'include/trace')
| -rw-r--r-- | include/trace/events/f2fs.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h index 795698925d20..3ec73f17ee2a 100644 --- a/include/trace/events/f2fs.h +++ b/include/trace/events/f2fs.h @@ -82,7 +82,6 @@ TRACE_DEFINE_ENUM(CP_TRIMMED); { REQ_OP_WRITE, "WRITE" }, \ { REQ_OP_FLUSH, "FLUSH" }, \ { REQ_OP_DISCARD, "DISCARD" }, \ - { REQ_OP_ZONE_REPORT, "ZONE_REPORT" }, \ { REQ_OP_SECURE_ERASE, "SECURE_ERASE" }, \ { REQ_OP_ZONE_RESET, "ZONE_RESET" }, \ { REQ_OP_WRITE_SAME, "WRITE_SAME" }, \ |