Hi folks, v2: https://lore.kernel.org/r/[email protected] mkfs v8: https://lore.kernel.org/r/[email protected]
This is the 4th version of tail-packing inline compressed data feature. It tries to inline the tail pcluster right after the inode metadata to save data I/O and storage space. Take Linux 5.10.87 source code as an example: linux-5.10.87 (erofs, uncompressed) 972570624 linux-5.10.87 (erofs, lz4hc,9 4k tailpacking) 391696384 linux-5.10.87 (erofs, lz4hc,9 8k tailpacking) 368807936 linux-5.10.87 (erofs, lz4hc,9 16k tailpacking) 345649152 linux-5.10.87 (erofs, lz4hc,9 4k vanilla) 416079872 linux-5.10.87 (erofs, lz4hc,9 8k vanilla) 395493376 linux-5.10.87 (erofs, lz4hc,9 16k vanilla) 383213568 Thanks, Gao Xiang changes since v3: - add comments about z_erofs_lz4_decompress_ctx (Chao); - move cache_strategy together with preload_compressed_pages (Yue); - remove duplicated code about z_idata_size (Yue); - rename z_idata_headlcn to z_tailextent_headlcn since EROFS_GET_BLOCKS_FINDTAIL is a generic flag which is not only used for tail pcluster (Yue). Gao Xiang (3): erofs: tidy up z_erofs_lz4_decompress erofs: introduce z_erofs_fixup_insize erofs: support unaligned data decompression Yue Hu (2): erofs: support inline data decompression erofs: add on-disk compressed tail-packing inline support fs/erofs/compress.h | 4 +- fs/erofs/decompressor.c | 132 +++++++++++++++++++-------------- fs/erofs/decompressor_lzma.c | 19 ++--- fs/erofs/erofs_fs.h | 10 ++- fs/erofs/internal.h | 6 ++ fs/erofs/super.c | 3 + fs/erofs/sysfs.c | 2 + fs/erofs/zdata.c | 139 +++++++++++++++++++++++------------ fs/erofs/zdata.h | 24 +++++- fs/erofs/zmap.c | 113 ++++++++++++++++++++-------- 10 files changed, 306 insertions(+), 146 deletions(-) -- 2.24.4
