diff options
Diffstat (limited to 'Documentation/admin-guide/device-mapper/dm-integrity.rst')
| -rw-r--r-- | Documentation/admin-guide/device-mapper/dm-integrity.rst | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/Documentation/admin-guide/device-mapper/dm-integrity.rst b/Documentation/admin-guide/device-mapper/dm-integrity.rst index c00f9f11e3f3..8439d2ae689b 100644 --- a/Documentation/admin-guide/device-mapper/dm-integrity.rst +++ b/Documentation/admin-guide/device-mapper/dm-integrity.rst @@ -182,12 +182,15 @@ fix_padding space-efficient. If this option is not present, large padding is used - that is for compatibility with older kernels. - -The journal mode (D/J), buffer_sectors, journal_watermark, commit_time can -be changed when reloading the target (load an inactive table and swap the -tables with suspend and resume). The other arguments should not be changed -when reloading the target because the layout of disk data depend on them -and the reloaded target would be non-functional. +allow_discards + Allow block discard requests (a.k.a. TRIM) for the integrity device. + Discards are only allowed to devices using internal hash. + +The journal mode (D/J), buffer_sectors, journal_watermark, commit_time and +allow_discards can be changed when reloading the target (load an inactive +table and swap the tables with suspend and resume). The other arguments +should not be changed when reloading the target because the layout of disk +data depend on them and the reloaded target would be non-functional. The layout of the formatted block device: |