Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright 2023 Red Hat
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*/
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#ifndef VDO_LOGICAL_ZONE_H
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#define VDO_LOGICAL_ZONE_H
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#include <linux/list.h>
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#include "admin-state.h"
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#include "int-map.h"
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#include "types.h"
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struct physical_zone;
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struct logical_zone {
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/* The completion for flush notifications */
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struct vdo_completion completion;
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/* The owner of this zone */
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struct logical_zones *zones;
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/* Which logical zone this is */
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zone_count_t zone_number;
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/* The thread id for this zone */
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thread_id_t thread_id;
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/* In progress operations keyed by LBN */
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struct int_map *lbn_operations;
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/* The logical to physical map */
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struct block_map_zone *block_map_zone;
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/* The current flush generation */
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sequence_number_t flush_generation;
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/*
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* The oldest active generation in this zone. This is mutated only on the logical zone
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* thread but is queried from the flusher thread.
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*/
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sequence_number_t oldest_active_generation;
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/* The number of IOs in the current flush generation */
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block_count_t ios_in_flush_generation;
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/* The youngest generation of the current notification */
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sequence_number_t notification_generation;
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/* Whether a notification is in progress */
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bool notifying;
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/* The queue of active data write VIOs */
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struct list_head write_vios;
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/* The administrative state of the zone */
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struct admin_state state;
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/* The physical zone from which to allocate */
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struct physical_zone *allocation_zone;
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/* The number of allocations done from the current allocation_zone */
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block_count_t allocation_count;
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/* The next zone */
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struct logical_zone *next;
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};
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struct logical_zones {
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/* The vdo whose zones these are */
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struct vdo *vdo;
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/* The manager for administrative actions */
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struct action_manager *manager;
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/* The number of zones */
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zone_count_t zone_count;
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/* The logical zones themselves */
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struct logical_zone zones[];
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};
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int __must_check vdo_make_logical_zones(struct vdo *vdo,
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struct logical_zones **zones_ptr);
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void vdo_free_logical_zones(struct logical_zones *zones);
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void vdo_drain_logical_zones(struct logical_zones *zones,
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const struct admin_state_code *operation,
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struct vdo_completion *completion);
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void vdo_resume_logical_zones(struct logical_zones *zones,
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struct vdo_completion *parent);
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void vdo_increment_logical_zone_flush_generation(struct logical_zone *zone,
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sequence_number_t expected_generation);
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void vdo_acquire_flush_generation_lock(struct data_vio *data_vio);
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void vdo_release_flush_generation_lock(struct data_vio *data_vio);
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struct physical_zone * __must_check vdo_get_next_allocation_zone(struct logical_zone *zone);
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void vdo_dump_logical_zone(const struct logical_zone *zone);
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#endif /* VDO_LOGICAL_ZONE_H */
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