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-rw-r--r--Documentation/device-mapper/dm-integrity.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/device-mapper/dm-integrity.txt b/Documentation/device-mapper/dm-integrity.txt
index ced34cd915ef..f33e3ade7a09 100644
--- a/Documentation/device-mapper/dm-integrity.txt
+++ b/Documentation/device-mapper/dm-integrity.txt
@@ -136,6 +136,11 @@ journal_mac:algorithm(:key) (the key is optional)
the journal. Thus, modified sector number would be detected at
this stage.
+block_size:number
+ The size of a data block in bytes. The larger the block size the
+ less overhead there is for per-block integrity metadata.
+ Supported values are 512, 1024, 2048 and 4096 bytes. If not
+ specified the default block size is 512 bytes.
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