[PATCH v3 0/2] Fix DM zone resource limits stacking

Damien Le Moal
2024-06-05T06:39:09Z

This is V2 of the patch 4/4 of the series "Zone write plugging and DM
zone fixes". This patch fixes DM zone resource limits stacking (max open
zones and max active zones limits). Patch 1 is new and is added to help
catch problems and eventual regressions of the handling of these limits.

Changes from v2:
- Modify patch 1 to return an error for the case where the max open
zones limit is greater than the max active zones limit.
- Modify patch 2 to avoid duplicated actions on the limits and to
remove warnings for unusual zone limits.

Changes from v1:
- Added patch 1
- Modified patch 2 to not cap the limits for a target with the number
of sequential zones mapped but rather to use the device limits as is
when more zones than the limits are mapped and 0 otherwise (no
limits).

Damien Le Moal (2):
block: Imporve checks on zone resource limits
dm: Improve zone resource limits handling

block/blk-settings.c | 8 ++
block/blk-zoned.c | 17 +++-
drivers/md/dm-zone.c | 220 +++++++++++++++++++++++++++++++++++--------
3 files changed, 205 insertions(+), 40 deletions(-)

--
2.45.1