[PATCH 0/3] ubifs: add lz4hc compression

[Hyunchul Lee]

From: Hyunchul Lee <cheol.lee at lge.com>

This patch set is for adding support for lz4hc compression.  lz4hc's
compression ratio is comparable to zlib, but its compression/decompression
speed is faster than zlib[1].

Another compression type cannot be added any more in respect that type of
ubifs_inode's compr_type is "unsigned:2" and there are 4 compression
types.  There may be overflow in assignment to compr_type, and prevision 
version of ubifs is trying to decompress file with wrong compression type.

[1] https://github.com/lz4/lz4

Brent Taylor (1):
  ubifs: add lz4hc compressor

Hyunchul Lee (2):
  ubifs: change type of ubifs_inode's compr_type to unsigend:16
  ubifs: add "compr=lz4hc" into ubifs.txt

 Documentation/filesystems/ubifs.txt |  1 +
 fs/ubifs/Kconfig                    | 10 ++++++++++
 fs/ubifs/compress.c                 | 25 ++++++++++++++++++++++++-
 fs/ubifs/super.c                    |  2 ++
 fs/ubifs/ubifs-media.h              |  2 ++
 fs/ubifs/ubifs.h                    |  2 +-
 6 files changed, 40 insertions(+), 2 deletions(-)

-- 
1.9.1