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authorSam Ravnborg <sam@ravnborg.org>2009-04-10 13:18:08 +0200
committerSam Ravnborg <sam@ravnborg.org>2009-04-11 08:18:11 +0200
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downloadop-kernel-dev-20375bf82567b5fecd331048c6cc1fc292b67710.zip
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Documentation: explain the difference between __bitwise and __bitwise__
Simply added explanation from Al Viro in the following mail: http://lkml.indiana.edu/hypermail/linux/kernel/0802.2/3164.html Cc: Al Viro <viro@ftp.linux.org.uk> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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diff --git a/Documentation/sparse.txt b/Documentation/sparse.txt
index 42f43fa..34c76a5 100644
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@@ -42,6 +42,14 @@ sure that bitwise types don't get mixed up (little-endian vs big-endian
vs cpu-endian vs whatever), and there the constant "0" really _is_
special.
+__bitwise__ - to be used for relatively compact stuff (gfp_t, etc.) that
+is mostly warning-free and is supposed to stay that way. Warnings will
+be generated without __CHECK_ENDIAN__.
+
+__bitwise - noisy stuff; in particular, __le*/__be* are that. We really
+don't want to drown in noise unless we'd explicitly asked for it.
+
+
Getting sparse
~~~~~~~~~~~~~~
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