idr_replace (9) Linux Manual Page
idr_replace – replace pointer for given id
Synopsis
void *idr_replace(struct idr *idp, void *ptr, int id);Arguments
idp
-
- idr handle
ptr
- pointer you want associated with the id
id
- lookup key
Description
Replace the pointer registered with an id and return the old value. A -ENOENT return indicates that id was not found. A -EINVAL return indicates that id was not within valid constraints.
The caller must serialize with writers.