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>
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef LINUX_PR_H
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#define LINUX_PR_H
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#include <uapi/linux/pr.h>
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struct pr_keys {
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u32 generation;
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u32 num_keys;
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u64 keys[];
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};
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struct pr_held_reservation {
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u64 key;
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u32 generation;
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enum pr_type type;
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};
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struct pr_ops {
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int (*pr_register)(struct block_device *bdev, u64 old_key, u64 new_key,
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u32 flags);
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int (*pr_reserve)(struct block_device *bdev, u64 key,
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enum pr_type type, u32 flags);
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int (*pr_release)(struct block_device *bdev, u64 key,
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enum pr_type type);
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int (*pr_preempt)(struct block_device *bdev, u64 old_key, u64 new_key,
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enum pr_type type, bool abort);
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int (*pr_clear)(struct block_device *bdev, u64 key);
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/*
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* pr_read_keys - Read the registered keys and return them in the
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* pr_keys->keys array. The keys array will have been allocated at the
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* end of the pr_keys struct, and pr_keys->num_keys must be set to the
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* number of keys the array can hold. If there are more than can fit
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* in the array, success will still be returned and pr_keys->num_keys
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* will reflect the total number of keys the device contains, so the
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* caller can retry with a larger array.
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*/
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int (*pr_read_keys)(struct block_device *bdev,
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struct pr_keys *keys_info);
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int (*pr_read_reservation)(struct block_device *bdev,
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struct pr_held_reservation *rsv);
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};
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#endif /* LINUX_PR_H */
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