Merge tag 'for-linus-2021-01-24' of git://git.kernel.org/pub/scm/linux/kernel/git...

[linux-2.6-block.git] / Documentation / admin-guide / device-mapper / dm-integrity.rst

diff --git a/Documentation/admin-guide/device-mapper/dm-integrity.rst b/Documentation/admin-guide/device-mapper/dm-integrity.rst
index 4e6f504474ac2d48bab8e3df7260fc441e033ba4..2cc5488acbd97a1efda5152a4c6e80299246d2a2 100644 (file)
--- a/Documentation/admin-guide/device-mapper/dm-integrity.rst
+++ b/Documentation/admin-guide/device-mapper/dm-integrity.rst
@@ -177,14 +177,20 @@ bitmap_flush_interval:number
        The bitmap flush interval in milliseconds. The metadata buffers
        are synchronized when this interval expires.
 
+allow_discards
+       Allow block discard requests (a.k.a. TRIM) for the integrity device.
+       Discards are only allowed to devices using internal hash.
+
 fix_padding
        Use a smaller padding of the tag area that is more
        space-efficient. If this option is not present, large padding is
        used - that is for compatibility with older kernels.
 
-allow_discards
-       Allow block discard requests (a.k.a. TRIM) for the integrity device.
-       Discards are only allowed to devices using internal hash.
+legacy_recalculate
+       Allow recalculating of volumes with HMAC keys. This is disabled by
+       default for security reasons - an attacker could modify the volume,
+       set recalc_sector to zero, and the kernel would not detect the
+       modification.
 
 The journal mode (D/J), buffer_sectors, journal_watermark, commit_time and
 allow_discards can be changed when reloading the target (load an inactive