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| author | Gao Xiang <hsiangkao@redhat.com> | 2021-04-07 12:39:20 +0800 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@redhat.com> | 2021-04-10 03:20:16 +0800 |
| commit | 9f6cc76e6ff0631a99cd94eab8af137057633a52 (patch) | |
| tree | af737fdf2f408fc6e33d46150e954bb1e6d799da /fs/erofs/erofs_fs.h | |
| parent | 524887347fcb67faa0a63dd3c4c02ab48d4968d4 (diff) | |
| download | linux-9f6cc76e6ff0631a99cd94eab8af137057633a52.tar.bz2 | |
erofs: introduce physical cluster slab pools
Since multiple pcluster sizes could be used at once, the number of
compressed pages will become a variable factor. It's necessary to
introduce slab pools rather than a single slab cache now.
This limits the pclustersize to 1M (Z_EROFS_PCLUSTER_MAX_SIZE), and
get rid of the obsolete EROFS_FS_CLUSTER_PAGE_LIMIT, which has no
use now.
Link: https://lore.kernel.org/r/20210407043927.10623-4-xiang@kernel.org
Acked-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <hsiangkao@redhat.com>
Diffstat (limited to 'fs/erofs/erofs_fs.h')
| -rw-r--r-- | fs/erofs/erofs_fs.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h index 626b7d3e9ab7..76777673eb63 100644 --- a/fs/erofs/erofs_fs.h +++ b/fs/erofs/erofs_fs.h @@ -201,6 +201,9 @@ static inline unsigned int erofs_xattr_entry_size(struct erofs_xattr_entry *e) e->e_name_len + le16_to_cpu(e->e_value_size)); } +/* maximum supported size of a physical compression cluster */ +#define Z_EROFS_PCLUSTER_MAX_SIZE (1024 * 1024) + /* available compression algorithm types (for h_algorithmtype) */ enum { Z_EROFS_COMPRESSION_LZ4 = 0, |