diff options
| author | Jia Zhu <zhujia.zj@bytedance.com> | 2022-09-18 12:34:53 +0800 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2022-09-20 08:01:53 +0800 |
| commit | 8b7adf1dff3d5baf687acda936f193f80b7e0179 (patch) | |
| tree | fd151153106005976743f20a8d8b71d1c0d4ec68 /fs/erofs/internal.h | |
| parent | e1de2da0b7ac2dc0120c2ba8c7044788611933ea (diff) | |
erofs: introduce fscache-based domain
A new fscache-based shared domain mode is going to be introduced for
erofs. In which case, same data blobs in same domain will be shared
and reused to reduce on-disk space usage.
The implementation of sharing blobs will be introduced in subsequent
patches.
Signed-off-by: Jia Zhu <zhujia.zj@bytedance.com>
Reviewed-by: Jingbo Xu <jefflexu@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220918043456.147-4-zhujia.zj@bytedance.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'fs/erofs/internal.h')
| -rw-r--r-- | fs/erofs/internal.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index 39fb124ce670..93fc4ad61cfb 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -76,6 +76,7 @@ struct erofs_mount_opts { #endif unsigned int mount_opt; char *fsid; + char *domain_id; }; struct erofs_dev_context { @@ -98,6 +99,13 @@ struct erofs_sb_lz4_info { u16 max_pclusterblks; }; +struct erofs_domain { + refcount_t ref; + struct list_head list; + struct fscache_volume *volume; + char *domain_id; +}; + struct erofs_fscache { struct fscache_cookie *cookie; struct inode *inode; @@ -157,6 +165,7 @@ struct erofs_sb_info { /* fscache support */ struct fscache_volume *volume; struct erofs_fscache *s_fscache; + struct erofs_domain *domain; }; #define EROFS_SB(sb) ((struct erofs_sb_info *)(sb)->s_fs_info) |