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Add no_read/write_wrokqueue to dm-crypt options.

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These performance options, introduced in kernel 5.9, configures
dm-crypt to bypass read or write workqueues and run encryption
synchronously.

Also support persistent storage of these flags for LUKS2.
This commit is contained in:
Milan Broz
2020-08-20 20:58:44 +02:00
parent 3c54d8a239
commit d5729bdf01
9 changed files with 97 additions and 8 deletions
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lib/utils_dm.h
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@@ -70,6 +70,7 @@ static inline uint32_t act2dmflags(uint32_t act_flags)
#define DM_VERITY_SIGNATURE_SUPPORTED (1 << 22) /* Verity option root_hash_sig_key_desc supported */
#define DM_INTEGRITY_DISCARDS_SUPPORTED (1 << 23) /* dm-integrity discards/TRIM option is supported */
#define DM_VERITY_PANIC_CORRUPTION_SUPPORTED (1 << 24) /* dm-verity panic on corruption */
#define DM_CRYPT_NO_WORKQUEUE_SUPPORTED (1 << 25) /* dm-crypt suppot for bypassing workqueues */
typedef enum { DM_CRYPT = 0, DM_VERITY, DM_INTEGRITY, DM_LINEAR, DM_ERROR, DM_ZERO, DM_UNKNOWN } dm_target_type;
enum tdirection { TARGET_SET = 1, TARGET_QUERY };