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| author | Gao Xiang <hsiangkao@redhat.com> | 2021-04-07 07:39:18 +0300 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@redhat.com> | 2021-04-07 07:41:22 +0300 |
| commit | 54e0b6c873dcbd02b9b479c893f6fba8fcbc6a9c (patch) | |
| tree | cc32143a352c780dc58f6f9da9b8ff2ca1135cf6 /fs/erofs/internal.h | |
| parent | fe6adcce7e297fcb49f40c62df42334690c3f848 (diff) | |
| download | linux-54e0b6c873dcbd02b9b479c893f6fba8fcbc6a9c.tar.xz | |
erofs: reserve physical_clusterbits[]
Formal big pcluster design is actually more powerful / flexable than
the previous thought whose pclustersize was fixed as power-of-2 blocks,
which was obviously inefficient and space-wasting. Instead, pclustersize
can now be set independently for each pcluster, so various pcluster
sizes can also be used together in one file if mkfs wants (for example,
according to data type and/or compression ratio).
Let's get rid of previous physical_clusterbits[] setting (also notice
that corresponding on-disk fields are still 0 for now). Therefore,
head1/2 can be used for at most 2 different algorithms in one file and
again pclustersize is now independent of these.
Link: https://lore.kernel.org/r/20210407043927.10623-2-xiang@kernel.org
Acked-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <hsiangkao@redhat.com>
Diffstat (limited to 'fs/erofs/internal.h')
| -rw-r--r-- | fs/erofs/internal.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index 60063bbbb91a..05b02f99324c 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -266,7 +266,6 @@ struct erofs_inode { unsigned short z_advise; unsigned char z_algorithmtype[2]; unsigned char z_logical_clusterbits; - unsigned char z_physical_clusterbits[2]; }; #endif /* CONFIG_EROFS_FS_ZIP */ }; |