[PATCH v5 0/2] add crc64 calculation as kernel library

From: Coly Li
Date: Thu Jul 26 2018 - 01:34:13 EST

This patch set adds basic implementation of crc64 calculation as Linux
kernel library. Since bcache already does crc64 by itself, this patch
set also modifies bcache code to use the new crc64 library routine.

Currently bcache is the only user of crc64 calculation, another potential
user is bcachefs which is on the way to be in mainline kernel. Therefore
it makes sense to make crc64 calculation to be a public library.

CRC calculation consistency testing is not trvial, it will be another
separated patch set and not in this series any more.

Coly Li

Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Michael Lyle <mlyle@xxxxxxxx>
Cc: Kent Overstreet <kent.overstreet@xxxxxxxxx>
Cc: Kate Stewart <kstewart@xxxxxxxxxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Eric Biggers <ebiggers3@xxxxxxxxx>
v5: Remove test_crc patch from this series, it will be another separated
patch set. Fixes review comments from v4.
v4: Only keep crc64_be() in lib/crc64.c, tested bcache specific stuffs
moved back to bcache code.
Fixes all review comments of v3.
v3: Remove little endian restriction and remove 'le' from function names.
Fixes all review comments of v2
v2: Combine first two patches into one
Fixes all review comments of v1
v1: Initial version.

Coly Li (2):
lib: add crc64 calculation routines
bcache: use routines from lib/crc64.c for CRC64 calculation

drivers/md/bcache/Kconfig | 1 +
drivers/md/bcache/util.c | 131 --------------------------------------
drivers/md/bcache/util.h | 21 ++++--
include/linux/crc64.h | 11 ++++
lib/.gitignore | 2 +
lib/Kconfig | 8 +++
lib/Makefile | 11 ++++
lib/crc64.c | 56 ++++++++++++++++
lib/gen_crc64table.c | 68 ++++++++++++++++++++
9 files changed, 174 insertions(+), 135 deletions(-)
create mode 100644 include/linux/crc64.h
create mode 100644 lib/crc64.c
create mode 100644 lib/gen_crc64table.c