From 8b0a8165cdad0f4133837d753649ef4682e42c3b Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 7 Aug 2024 15:11:40 +0200 Subject: Merging upstream version 6.9.7. Signed-off-by: Daniel Baumann --- drivers/md/dm-vdo/logical-zone.h | 89 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100644 drivers/md/dm-vdo/logical-zone.h (limited to 'drivers/md/dm-vdo/logical-zone.h') diff --git a/drivers/md/dm-vdo/logical-zone.h b/drivers/md/dm-vdo/logical-zone.h new file mode 100644 index 0000000000..1b666c84a1 --- /dev/null +++ b/drivers/md/dm-vdo/logical-zone.h @@ -0,0 +1,89 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright 2023 Red Hat + */ + +#ifndef VDO_LOGICAL_ZONE_H +#define VDO_LOGICAL_ZONE_H + +#include + +#include "admin-state.h" +#include "int-map.h" +#include "types.h" + +struct physical_zone; + +struct logical_zone { + /* The completion for flush notifications */ + struct vdo_completion completion; + /* The owner of this zone */ + struct logical_zones *zones; + /* Which logical zone this is */ + zone_count_t zone_number; + /* The thread id for this zone */ + thread_id_t thread_id; + /* In progress operations keyed by LBN */ + struct int_map *lbn_operations; + /* The logical to physical map */ + struct block_map_zone *block_map_zone; + /* The current flush generation */ + sequence_number_t flush_generation; + /* + * The oldest active generation in this zone. This is mutated only on the logical zone + * thread but is queried from the flusher thread. + */ + sequence_number_t oldest_active_generation; + /* The number of IOs in the current flush generation */ + block_count_t ios_in_flush_generation; + /* The youngest generation of the current notification */ + sequence_number_t notification_generation; + /* Whether a notification is in progress */ + bool notifying; + /* The queue of active data write VIOs */ + struct list_head write_vios; + /* The administrative state of the zone */ + struct admin_state state; + /* The physical zone from which to allocate */ + struct physical_zone *allocation_zone; + /* The number of allocations done from the current allocation_zone */ + block_count_t allocation_count; + /* The next zone */ + struct logical_zone *next; +}; + +struct logical_zones { + /* The vdo whose zones these are */ + struct vdo *vdo; + /* The manager for administrative actions */ + struct action_manager *manager; + /* The number of zones */ + zone_count_t zone_count; + /* The logical zones themselves */ + struct logical_zone zones[]; +}; + +int __must_check vdo_make_logical_zones(struct vdo *vdo, + struct logical_zones **zones_ptr); + +void vdo_free_logical_zones(struct logical_zones *zones); + +void vdo_drain_logical_zones(struct logical_zones *zones, + const struct admin_state_code *operation, + struct vdo_completion *completion); + +void vdo_resume_logical_zones(struct logical_zones *zones, + struct vdo_completion *parent); + +void vdo_increment_logical_zone_flush_generation(struct logical_zone *zone, + sequence_number_t expected_generation); + +void vdo_acquire_flush_generation_lock(struct data_vio *data_vio); + +void vdo_release_flush_generation_lock(struct data_vio *data_vio); + +struct physical_zone * __must_check vdo_get_next_allocation_zone(struct logical_zone *zone); + +void vdo_dump_logical_zone(const struct logical_zone *zone); + +#endif /* VDO_LOGICAL_ZONE_H */ -- cgit v1.2.3