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| author | Hannes Reinecke <hare@suse.de> | 2020-05-11 10:24:16 +0200 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2020-05-15 16:29:36 +0200 |
| commit | bc3d5717d242a37d2e9ea85d7e7b2e3569324d24 (patch) | |
| tree | 8f03f96efab1336662a15ab9a777543b6f46c8cb /drivers/md/dm-zoned-metadata.c | |
| parent | dm mpath: add Historical Service Time Path Selector (diff) | |
| download | linux-bc3d5717d242a37d2e9ea85d7e7b2e3569324d24.tar.xz linux-bc3d5717d242a37d2e9ea85d7e7b2e3569324d24.zip | |
dm zoned: add 'status' callback
Add callback to supply information for 'dmsetup status'
and 'dmsetup table'. The output for 'dmsetup status' is
0 <size> zoned <nr_zones> zones <nr_unmap_rnd>/<nr_rnd> random <nr_unmap_seq>/<nr_seq> sequential
where <nr_unmap_rnd> is the number of unmapped (ie free) random zones,
<nr_rnd> the total number of random zones, <nr_unmap_seq> the number
of unmapped sequential zones, and <nr_seq> the total number of
sequential zones.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Bob Liu <bob.liu@oracle.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-zoned-metadata.c')
| -rw-r--r-- | drivers/md/dm-zoned-metadata.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c index 369de15c4e80..c8787560fa9f 100644 --- a/drivers/md/dm-zoned-metadata.c +++ b/drivers/md/dm-zoned-metadata.c @@ -202,6 +202,11 @@ sector_t dmz_start_block(struct dmz_metadata *zmd, struct dm_zone *zone) return (sector_t)dmz_id(zmd, zone) << zmd->dev->zone_nr_blocks_shift; } +unsigned int dmz_nr_zones(struct dmz_metadata *zmd) +{ + return zmd->dev->nr_zones; +} + unsigned int dmz_nr_chunks(struct dmz_metadata *zmd) { return zmd->nr_chunks; @@ -217,6 +222,16 @@ unsigned int dmz_nr_unmap_rnd_zones(struct dmz_metadata *zmd) return atomic_read(&zmd->unmap_nr_rnd); } +unsigned int dmz_nr_seq_zones(struct dmz_metadata *zmd) +{ + return zmd->nr_seq; +} + +unsigned int dmz_nr_unmap_seq_zones(struct dmz_metadata *zmd) +{ + return atomic_read(&zmd->unmap_nr_seq); +} + /* * Lock/unlock mapping table. * The map lock also protects all the zone lists. |