diff options
| author | Gao Xiang <hsiangkao@redhat.com> | 2021-04-07 12:39:18 +0800 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@redhat.com> | 2021-04-07 12:41:22 +0800 |
| commit | 54e0b6c873dcbd02b9b479c893f6fba8fcbc6a9c (patch) | |
| tree | cc32143a352c780dc58f6f9da9b8ff2ca1135cf6 /fs/erofs/zdata.c | |
| parent | fe6adcce7e297fcb49f40c62df42334690c3f848 (diff) | |
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/zdata.c')
| -rw-r--r-- | fs/erofs/zdata.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c index 4226f4115981..e3f0100d82d1 100644 --- a/fs/erofs/zdata.c +++ b/fs/erofs/zdata.c @@ -430,8 +430,7 @@ static int z_erofs_register_collection(struct z_erofs_collector *clt, else pcl->algorithmformat = Z_EROFS_COMPRESSION_SHIFTED; - pcl->clusterbits = EROFS_I(inode)->z_physical_clusterbits[0]; - pcl->clusterbits -= PAGE_SHIFT; + pcl->clusterbits = 0; /* new pclusters should be claimed as type 1, primary and followed */ pcl->next = clt->owned_head; |