---
title: FSVolume.KernelCacheCoherencyType.writeBack
framework: fskit
role: symbol
role_heading: Case
path: fskit/fsvolume/kernelcachecoherencytype/writeback
---

# FSVolume.KernelCacheCoherencyType.writeBack

A type that indicates writes immediately update the cache only, followed by a deferred write to storage.

## Declaration

```swift
case writeBack
```

## See Also

### Coherency types

- [FSVolume.KernelCacheCoherencyType.noCache](fskit/fsvolume/kernelcachecoherencytype/nocache.md)
- [FSVolume.KernelCacheCoherencyType.readCache](fskit/fsvolume/kernelcachecoherencytype/readcache.md)
- [FSVolume.KernelCacheCoherencyType.writeThrough](fskit/fsvolume/kernelcachecoherencytype/writethrough.md)