tree d6c819cd48f8f88beeb6bc2ac248f5a79b0d7ed6
parent dd01b690f8f4b1e414f89e5a9a5326bf720d6652
author Jason A. Donenfeld <Jason@zx2c4.com> 1486054334 -0500
committer Theodore Ts'o <tytso@mit.edu> 1486054334 -0500

ext4: move halfmd4 into hash.c directly

The "half md4" transform should not be used by any new code. And
fortunately, it's only used now by ext4. Since ext4 supports several
hashing methods, at some point it might be desirable to move to
something like SipHash. As an intermediate step, remove half md4 from
cryptohash.h and lib, and make it just a local function in ext4's
hash.c. There's precedent for doing this; the other function ext can use
for its hashes -- TEA -- is also implemented in the same place. Also, by
being a local function, this might allow gcc to perform some additional
optimizations.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>