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| author | Gao Xiang <hsiangkao@linux.alibaba.com> | 2022-07-15 23:42:03 +0800 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2022-07-22 21:44:27 +0800 |
| commit | 267f2492c8f71dac44399988b510f9bf6b074a51 (patch) | |
| tree | 21c44fe56bc17f1e308d3895b5f8ea8ee0691cf2 /fs/erofs/zdata.h | |
| parent | 2bfab9c0edac5f6031e8956477cd39f7162b208d (diff) | |
| download | linux-267f2492c8f71dac44399988b510f9bf6b074a51.tar.bz2 | |
erofs: introduce multi-reference pclusters (fully-referenced)
Let's introduce multi-reference pclusters at runtime. In details,
if one pcluster is requested by multiple extents at almost the same
time (even belong to different files), the longest extent will be
decompressed as representative and the other extents are actually
copied from the longest one in one round.
After this patch, fully-referenced extents can be correctly handled
and the full decoding check needs to be bypassed for
partial-referenced extents.
Acked-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220715154203.48093-17-hsiangkao@linux.alibaba.com
Diffstat (limited to 'fs/erofs/zdata.h')
| -rw-r--r-- | fs/erofs/zdata.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/erofs/zdata.h b/fs/erofs/zdata.h index 4ae3b763bc27..e7f04c4fbb81 100644 --- a/fs/erofs/zdata.h +++ b/fs/erofs/zdata.h @@ -84,6 +84,9 @@ struct z_erofs_pcluster { /* L: whether partial decompression or not */ bool partial; + /* L: indicate several pageofs_outs or not */ + bool multibases; + /* A: compressed bvecs (can be cached or inplaced pages) */ struct z_erofs_bvec compressed_bvecs[]; }; |