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. bcache uses crc64 as storage checksum, if a change of crc lib routines results an inconsistent result, the unmatched checksum may make bcache 'think' the on-disk is corrupted, such change should be avoided or detected as early as possible. Therefore the last patch in this series adds a crc test framework, to check consistency of different calculations. Coly Li Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Cc: Luis R. Rodriguez <mcgrof@xxxxxxxx> 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> --- Andy Shevchenko (1): lib/crc64: add crc64 option to lib/Kconfig Coly Li (3): lib: add crc64 calculation routines bcache: use routines from lib/crc64.c for CRC64 calculation lib/test_crc: Add test cases for crc calculation drivers/md/bcache/bcache.h | 7 +- drivers/md/bcache/btree.c | 2 +- drivers/md/bcache/request.c | 2 +- drivers/md/bcache/super.c | 5 +- drivers/md/bcache/util.c | 131 ---------------------------------- drivers/md/bcache/util.h | 5 +- include/linux/crc64.h | 15 ++++ lib/.gitignore | 2 + lib/Kconfig | 8 +++ lib/Kconfig.debug | 11 +++ lib/Makefile | 12 ++++ lib/crc64.c | 71 +++++++++++++++++++ lib/gen_crc64table.c | 76 ++++++++++++++++++++ lib/test_crc.c | 136 ++++++++++++++++++++++++++++++++++++ 14 files changed, 341 insertions(+), 142 deletions(-) create mode 100644 include/linux/crc64.h create mode 100644 lib/crc64.c create mode 100644 lib/gen_crc64table.c create mode 100644 lib/test_crc.c -- 2.17.1 -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
