Messages in this thread | ![/](/images/icornerl.gif) | | From | Gao Xiang <> | Subject | [PATCH v4 0/5] erofs: support tail-packing inline compressed data | Date | Tue, 28 Dec 2021 13:45:59 +0800 |
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Hi folks,
v2: https://lore.kernel.org/r/20211225070626.74080-1-hsiangkao@linux.alibaba.com mkfs v8: https://lore.kernel.org/r/20211224012316.42929-1-hsiangkao@linux.alibaba.com
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
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