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| author | Milan Broz <gmazyland@gmail.com> | 2020-08-20 19:45:38 +0200 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2020-09-22 19:24:46 +0200 |
| commit | 4a5caa4af0df5cd8f1c7f0c2f871d382662b022e (patch) | |
| tree | a469ccc3c3c995cf20709e583f0e95cadcf3fc2f /Documentation/admin-guide/device-mapper | |
| parent | dm: fix comment in dm_process_bio() (diff) | |
| download | linux-4a5caa4af0df5cd8f1c7f0c2f871d382662b022e.tar.xz linux-4a5caa4af0df5cd8f1c7f0c2f871d382662b022e.zip | |
dm crypt: document new no_workqueue flags
Commit 39d42fa96ba1 ("dm crypt: add flags to optionally bypass kcryptd
workqueues") introduced new dm-crypt 'no_read_workqueue' and
'no_write_workqueue' flags.
Add documentation to admin guide for them.
Fixes: 39d42fa96ba1 ("dm crypt: add flags to optionally bypass kcryptd workqueues")
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'Documentation/admin-guide/device-mapper')
| -rw-r--r-- | Documentation/admin-guide/device-mapper/dm-crypt.rst | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/admin-guide/device-mapper/dm-crypt.rst b/Documentation/admin-guide/device-mapper/dm-crypt.rst index 8f4a3f889d43..40dc2df58cd5 100644 --- a/Documentation/admin-guide/device-mapper/dm-crypt.rst +++ b/Documentation/admin-guide/device-mapper/dm-crypt.rst @@ -121,6 +121,14 @@ submit_from_crypt_cpus thread because it benefits CFQ to have writes submitted using the same context. +no_read_workqueue + Bypass dm-crypt internal workqueue and process read requests synchronously. + +no_write_workqueue + Bypass dm-crypt internal workqueue and process write requests synchronously. + This option is automatically enabled for host-managed zoned block devices + (e.g. host-managed SMR hard-disks). + integrity:<bytes>:<type> The device requires additional <bytes> metadata per-sector stored in per-bio integrity structure. This metadata must by provided |