htmldocs: Documentation/admin-guide/device-mapper/writecache.rst:23: WARNING: Unexpected indentation.

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1ce8c443e95698cecc32cc8ed5ff4b72da61eed4
commit: 5c0de3d72f8c05678ed769bea24e98128f7ab570 dm writecache: make writeback pause configurable
date:   1 year ago
reproduce: make htmldocs

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> Documentation/admin-guide/device-mapper/writecache.rst:23: WARNING: Unexpected indentation.

vim +23 Documentation/admin-guide/device-mapper/writecache.rst

f0ba43774cea3fc Documentation/device-mapper/writecache.rst Mauro Carvalho Chehab 2019-06-12  13  
48debafe4f2feab Documentation/device-mapper/writecache.txt Mikulas Patocka       2018-03-08  14  1. type of the cache device - "p" or "s"
f0ba43774cea3fc Documentation/device-mapper/writecache.rst Mauro Carvalho Chehab 2019-06-12  15  	- p - persistent memory
f0ba43774cea3fc Documentation/device-mapper/writecache.rst Mauro Carvalho Chehab 2019-06-12  16  	- s - SSD
48debafe4f2feab Documentation/device-mapper/writecache.txt Mikulas Patocka       2018-03-08  17  2. the underlying device that will be cached
48debafe4f2feab Documentation/device-mapper/writecache.txt Mikulas Patocka       2018-03-08  18  3. the cache device
48debafe4f2feab Documentation/device-mapper/writecache.txt Mikulas Patocka       2018-03-08  19  4. block size (4096 is recommended; the maximum block size is the page
48debafe4f2feab Documentation/device-mapper/writecache.txt Mikulas Patocka       2018-03-08  20     size)
48debafe4f2feab Documentation/device-mapper/writecache.txt Mikulas Patocka       2018-03-08  21  5. the number of optional parameters (the parameters with an argument
48debafe4f2feab Documentation/device-mapper/writecache.txt Mikulas Patocka       2018-03-08  22     count as two)
d284f8248c72d0c Documentation/device-mapper/writecache.txt Mikulas Patocka       2018-06-28 @23  	start_sector n		(default: 0)

:::::: The code at line 23 was first introduced by commit
:::::: d284f8248c72d0cb36a930920e60592eb455cd0d dm writecache: support optional offset for start of device

:::::: TO: Mikulas Patocka <mpatocka@xxxxxxxxxx>
:::::: CC: Mike Snitzer <snitzer@xxxxxxxxxx>

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