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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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16
src/cryptsetup.c
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@@ -111,6 +111,12 @@ static void _set_activation_flags(uint32_t *flags)
if (ARG_SET(OPT_PERF_SUBMIT_FROM_CRYPT_CPUS_ID))
*flags |= CRYPT_ACTIVATE_SUBMIT_FROM_CRYPT_CPUS;
if (ARG_SET(OPT_PERF_NO_READ_WORKQUEUE_ID))
*flags |= CRYPT_ACTIVATE_NO_READ_WORKQUEUE;
if (ARG_SET(OPT_PERF_NO_WRITE_WORKQUEUE_ID))
*flags |= CRYPT_ACTIVATE_NO_WRITE_WORKQUEUE;
if (ARG_SET(OPT_INTEGRITY_NO_JOURNAL_ID))
*flags |= CRYPT_ACTIVATE_NO_JOURNAL;
@@ -766,11 +772,15 @@ static int action_status(void)
(cad.flags & CRYPT_ACTIVATE_SUSPENDED) ? " (suspended)" : "");
if (cad.flags & (CRYPT_ACTIVATE_ALLOW_DISCARDS|
CRYPT_ACTIVATE_SAME_CPU_CRYPT|
CRYPT_ACTIVATE_SUBMIT_FROM_CRYPT_CPUS))
log_std(" flags: %s%s%s\n",
CRYPT_ACTIVATE_SUBMIT_FROM_CRYPT_CPUS|
CRYPT_ACTIVATE_NO_READ_WORKQUEUE|
CRYPT_ACTIVATE_NO_WRITE_WORKQUEUE))
log_std(" flags: %s%s%s%s%s\n",
(cad.flags & CRYPT_ACTIVATE_ALLOW_DISCARDS) ? "discards " : "",
(cad.flags & CRYPT_ACTIVATE_SAME_CPU_CRYPT) ? "same_cpu_crypt " : "",
(cad.flags & CRYPT_ACTIVATE_SUBMIT_FROM_CRYPT_CPUS) ? "submit_from_crypt_cpus" : "");
(cad.flags & CRYPT_ACTIVATE_SUBMIT_FROM_CRYPT_CPUS) ? "submit_from_crypt_cpus " : "",
(cad.flags & CRYPT_ACTIVATE_NO_READ_WORKQUEUE) ? "no_read_workqueue " : "",
(cad.flags & CRYPT_ACTIVATE_NO_WRITE_WORKQUEUE) ? "no_write_workqueue" : "");
}
out:
crypt_free(cd);