* feat(vfs): Implement append lock manager for file operations
- Introduced an `AppendLockManager` to ensure atomicity for append operations across filesystems, preventing data corruption in concurrent write scenarios.
- Updated file write methods to utilize the new append lock mechanism, ensuring that appending to files respects the latest end-of-file position.
- Enhanced `write_append` and `pwrite_append` methods to support forced append semantics, aligning with Linux behavior.
- Initialized the append lock manager during VFS initialization to ensure it is ready before any file write operations.
This addition improves the reliability of file operations in a multi-threaded environment, particularly for append scenarios.
Signed-off-by: longjin <longjin@DragonOS.org>
* feat(kernel): 添加jhash库并用于append_lock的哈希计算
Signed-off-by: longjin <longjin@DragonOS.org>
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Signed-off-by: longjin <longjin@DragonOS.org>
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