---
title: headChanged
framework: kernel
role: pseudoSymbol
path: kernel/iofwcmdq/1813007-headchanged
---

# headChanged

called when head command is changed, or the command itself changes state.

## See Also

### Fields

- [fHead](kernel/iofwcmdq/1563782-fhead.md)
- [fTail](kernel/iofwcmdq/1563843-ftail.md)