Documentation: dm-integrity: Document default values.

Signed-off-by: Russell Harmon <eatnumber1@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>

Author: eatnumber1

Documentation/admin-guide/device-mapper/dm-integrity.rst

@@ -102,7 +102,7 @@ journal_sectors:number
 	device. If the device is already formatted, the value from the
 	superblock is used.
 
-interleave_sectors:number
+interleave_sectors:number (default 32768)
 	The number of interleaved sectors. This values is rounded down to
 	a power of two. If the device is already formatted, the value from
 	the superblock is used.
@@ -111,16 +111,16 @@ meta_device:device
 	Don't interleave the data and metadata on the device. Use a
 	separate device for metadata.
 
-buffer_sectors:number
-	The number of sectors in one buffer. The value is rounded down to
-	a power of two.
+buffer_sectors:number (default 128)
+	The number of sectors in one metadata buffer. The value is rounded
+	down to a power of two.
 
-journal_watermark:number
+journal_watermark:number (default 50)
 	The journal watermark in percents. When the size of the journal
 	exceeds this watermark, the thread that flushes the journal will
 	be started.
 
-commit_time:number
+commit_time:number (default 10000)
 	Commit time in milliseconds. When this time passes, the journal is
 	written. The journal is also written immediately if the FLUSH
 	request is received.
@@ -168,11 +168,10 @@ 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
+block_size:number (default 512)
+	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.
+	Supported values are 512, 1024, 2048 and 4096 bytes.
 
 sectors_per_bit:number
 	In the bitmap mode, this parameter specifies the number of
@@ -291,7 +290,8 @@ The layout of the formatted block device:
     Each run contains:
 
 	* tag area - it contains integrity tags. There is one tag for each
-	  sector in the data area
+	  sector in the data area. The size of this area is always 4KiB or
+	  greater.
 	* data area - it contains data sectors. The number of data sectors
 	  in one run must be a power of two. log2 of this value is stored
 	  in the superblock.