---
title: op
framework: Kernel
role: pseudoSymbol
path: kernel/vnop_allocate_args/1807086-op
---

# op

Which locking operation: F_SETLK: set locking information about a region. F_GETLK: get locking information about the specified region. F_UNLCK: Unlock a region.

## See Also

### Fields

- [vp](kernel/vnop_allocate_args/1807080-vp.md)
- [id](kernel/vnop_allocate_args/1807083-id.md)
- [fl](kernel/vnop_allocate_args/1807089-fl.md)
- [flags](kernel/vnop_allocate_args/1807092-flags.md)
- [ctx](kernel/vnop_allocate_args/1807096-ctx.md)
- [timeout](kernel/vnop_allocate_args/1807102-timeout.md)