---
title: size
framework: Kernel
role: pseudoSymbol
path: kernel/vnop_blktooff_args/1807118-size
---

# size

Should be set to amount of data written to buffer.

## See Also

### Fields

- [vp](kernel/vnop_blktooff_args/1807112-vp.md)
- [uio](kernel/vnop_blktooff_args/1807117-uio.md)
- [options](kernel/vnop_blktooff_args/1807120-options.md)
- [ctx](kernel/vnop_blktooff_args/1807122-ctx.md)