---
title: FSVolume.KernelCacheCoherencyAction.update
framework: fskit
role: symbol
role_heading: Case
path: fskit/fsvolume/kernelcachecoherencyaction/update
---

# FSVolume.KernelCacheCoherencyAction.update

An action to update the coherency mode while keeping the cache valid, requiring no push or invalidation.

## Declaration

```swift
case update
```

## See Also

### Coherency actions

- [FSVolume.KernelCacheCoherencyAction.push](fskit/fsvolume/kernelcachecoherencyaction/push.md)
- [FSVolume.KernelCacheCoherencyAction.pushInvalidate](fskit/fsvolume/kernelcachecoherencyaction/pushinvalidate.md)
- [FSVolume.KernelCacheCoherencyAction.invalidate](fskit/fsvolume/kernelcachecoherencyaction/invalidate.md)
- [FSVolume.KernelCacheCoherencyAction.revoke](fskit/fsvolume/kernelcachecoherencyaction/revoke.md)