IDR_REPLACE(9)                    Basic Kernel Library Functions                   IDR_REPLACE(9)



NAME
       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.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                            IDR_REPLACE(9)