Switch flock copyin/copyout primitives to copy_{from,to}_user()

... and lose HAVE_ARCH_...; if copy_{to,from}_user() on an
architecture sucks badly enough to make it a problem, we have
a worse problem.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2017-06-26 23:51:31 -04:00
commit 8c6657cb50