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+The utf8data.h file in this directory is generated from the Unicode
+Character Database for version 12.1.0 of the Unicode standard.
+
+The full set of files can be found here:
+
+  http://www.unicode.org/Public/12.1.0/ucd/
+
+Note!
+
+The URL's listed below are not stable.  That's because Unicode 12.1.0
+has not been officially released yet; it is scheduled to be released
+on May 8, 2019.  We taking Unicode 12.1.0 a few weeks early because it
+contains a new Japanese character which is required in order to
+specify Japenese dates after May 1, 2019, when Crown Prince Naruhito
+ascends to the Chrysanthemum Throne.  (Isn't internationalization fun?
+The abdication of Emperor Akihito of Japan is requiring dozens of
+software packages to be updated with only a month's notice.  :-)
+
+We will update the URL's (and any needed changes to the checksums)
+after the final Unicode 12.1.0 is released.
+
+Individual source links:
+
+  https://www.unicode.org/Public/12.1.0/ucd/CaseFolding-12.1.0d2.txt
+  https://www.unicode.org/Public/12.1.0/ucd/DerivedAge-12.1.0d3.txt
+  https://www.unicode.org/Public/12.1.0/ucd/extracted/DerivedCombiningClass-12.1.0d2.txt
+  https://www.unicode.org/Public/12.1.0/ucd/DerivedCoreProperties-12.1.0d2.txt
+  https://www.unicode.org/Public/12.1.0/ucd/NormalizationCorrections-12.1.0d1.txt
+  https://www.unicode.org/Public/12.1.0/ucd/NormalizationTest-12.1.0d3.txt
+  https://www.unicode.org/Public/12.1.0/ucd/UnicodeData-12.1.0d2.txt
+
+md5sums (verify by running "md5sum -c README.utf8data"):
+
+  900e76da1d822a160fd6b8c0b1d70094  CaseFolding.txt
+  131256380bff4fea8ad4a851616f2f10  DerivedAge.txt
+  e731a4089b30002144e107e3d6f8d1fa  DerivedCombiningClass.txt
+  a47c9fbd7ff92a9b261ba9831e68778a  DerivedCoreProperties.txt
+  fcab6dad15e440879d92f315978f93d3  NormalizationCorrections.txt
+  f9ff1c55a60decf436100f791b44aa98  NormalizationTest.txt
+  755f6af699f8c8d2d958da411f78f6c6  UnicodeData.txt
+
+sha1sums (verify by running "sha1sum -c README.utf8data"):
+
+  dc9245f6803c4ac99555c361f5052e0b13eb779b  CaseFolding.txt
+  3281104f237184cdb5d869e86eb8573678ada7da  DerivedAge.txt
+  2f5f995ccb96e0fa84b15151b35d5e2681535175  DerivedCombiningClass.txt
+  5b8698a3fcd5018e1987f296b02e2c17e696415e  DerivedCoreProperties.txt
+  cd83935fbc012345d8792d2c704f69497e753835  NormalizationCorrections.txt
+  ea419aae505b337b0d99a83fa83fe58ddff7c19f  NormalizationTest.txt
+  dc973c0fc93d6f09d9ab9f70d1c9f89c447f0526  UnicodeData.txt
+
+
+To update to the newer version of the Unicode standard, the latest
+released version of the UCD can be found here:
+
+  http://www.unicode.org/Public/UCD/latest/
+
+Then, build under fs/unicode/ with REGENERATE_UTF8DATA=1:
+
+	make REGENERATE_UTF8DATA=1 fs/unicode/
+
+After sanity checking the newly generated utf8data.h file (the
+version generated from the 12.1.0 UCD should be 4,109 lines long, and
+have a total size of 324k) and/or comparing it with the older version
+of utf8data.h_shipped, rename it to utf8data.h_shipped.
+
+If you are a kernel developer updating to a newer version of the
+Unicode Character Database, please update this README.utf8data file
+with the version of the UCD that was used, the md5sum and sha1sums of
+the *.txt files, before checking in the new versions of the utf8data.h
+and README.utf8data files.