Rebase/wlw#55
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- 为了兼容测试平台，测试平台会删除所有.开头文件
- 使用写时复制，减少对电脑磁盘的损耗QwQ
- 修复 page cache truncate 失败时直接 panic 的问题，改为向上返回错误并记录 error 日志。 - 为 VFS 写路径增加 write_at_result，使 ext4 底层的 ENOSPC、ENOTSUP、ENOENT 等错误可以传递到 page cache writeback，避免只表现为 short writeback。 - 在 unlink 普通文件前丢弃该 inode 的 page cache，并断开旧页 owner，避免 unlink 后旧脏页迟到回写到已经释放或异常的 extent 路径。 - 为 FS_ERRNO 增加基础派生能力，便于错误传播和日志记录。
- 操作流程：展开所有submodule作为普通目录，对于ext4rs这就够了，对于rootfs，因为直接上传太大了，使用tar对他进行打包。然后把这个快照推到GITLAB_MIRROR_URL，并相应修改了makefile。
Ga1axy0
approved these changes
Jun 12, 2026
Ga1axy0
approved these changes
Jun 12, 2026
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