Return value of generic xattr operations

[Marco Stornelli]

Hi,

is it right that generic_setxattr & co. return -EOPNOTSUPP if there is a
namespace error? I mean, if the user try to set <my own namespace>.foo
attribute, the return value should be -EINVAL, isn't it? Operation not
supported means that extended attributes are not enabled or not
implemented by the fs. The man pages are not much clear about this
point. What do you think?

Marco
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