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3 Commits

Author SHA1 Message Date
Hyunchul Lee
7ddb3fef35 ntfs: implement codec ops for LZX and XPRESS 
Implement the transparent compression codec ops for XPRESS (4K, 8K,
16K) and LZX (32K) algorithms. The xpress_scratch_size,
lzx_scratch_size, xpress_decompress_chunk, and lzx_decompress_chunk
wrappers provide unified interfaces and use per-call dynamic scratch
state allocation (avoiding global mutexed singletons).

Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
 2026-08-21 19:06:45 +09:00
Hyunchul Lee
c34e33a60f ntfs: define LZNT1 codec ops under transparent codec interface 
Define the ntfs_lznt1_codec_ops structure containing decompress_pages
and compress_subblock callbacks in compress.c, and export it in
ntfs_codec.h. This structure binds existing LZNT1 decompress and
compress helper functions under the unified transparent compression
interface.

Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
 2026-08-21 19:06:33 +09:00
Hyunchul Lee
f2240a2ff4 ntfs: introduce transparent compression codec interface 
Introduce struct ntfs_codec_ops and enum ntfs_codec_id to provide a
unified interface for compression and decompression algorithms. This
interface supports WOF and LZNT1 decompression.

Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
 2026-08-21 19:06:29 +09:00