linux-stable.git/fs/ntfs/ntfs_codec.h, branch master Linux kernel stable tree ntfs: implement codec ops for LZX and XPRESS 2026-08-21T10:06:45+00:00 Hyunchul Lee hyc.lee@gmail.com 2026-08-21T05:00:57+00:00 7ddb3fef353231adcaba2c6c891463226e9c199f 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> 
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>
ntfs: define LZNT1 codec ops under transparent codec interface 2026-08-21T10:06:33+00:00 Hyunchul Lee hyc.lee@gmail.com 2026-08-21T05:00:51+00:00 c34e33a60fc7c410f15d265d80959b546088c10f 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> 
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>
ntfs: introduce transparent compression codec interface 2026-08-21T10:06:29+00:00 Hyunchul Lee hyc.lee@gmail.com 2026-08-21T05:00:50+00:00 f2240a2ff4db3a63c8740a9074ad98cb13d9b83b 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> 
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>