linux

iv/linux

History

Gao Xiang 8d2517aaee erofs: fix up compacted indexes for block size < 4096

Previously, the block size always equaled to PAGE_SIZE, therefore
`lclusterbits` couldn't be less than 12.

Since sub-page compressed blocks are now considered, `lobits` for
a lcluster in each pack cannot always be `lclusterbits` as before.
Otherwise, there is no enough room for the special value
`Z_EROFS_LI_D0_CBLKCNT`.

To support smaller block sizes, `lobits` for each compacted lcluster is
now calculated as:
   lobits = max(lclusterbits, ilog2(Z_EROFS_LI_D0_CBLKCNT) + 1)

Reviewed-by: Yue Hu <huyue2@coolpad.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20231206091057.87027-4-hsiangkao@linux.alibaba.com

2023-12-15 01:47:19 +08:00

compress.h

erofs: simplify compression configuration parser

2023-10-31 06:57:19 +08:00

data.c

erofs: fix NULL dereference of dif->bdev_handle in fscache mode

2023-11-17 19:55:46 +08:00

decompressor_deflate.c

erofs: tidy up redundant includes

2023-10-31 06:58:49 +08:00

decompressor_lzma.c

erofs: tidy up redundant includes