IDR_FOR_EACH(9)                   Basic Kernel Library Functions                  IDR_FOR_EACH(9)



NAME
       idr_for_each - iterate through all stored pointers

SYNOPSIS
       int idr_for_each(struct idr * idp, int (*fn) (int id, void *p, void *data), void * data);

ARGUMENTS
       idp
           idr handle

       fn
           function to be called for each pointer

       data
           data passed back to callback function

DESCRIPTION
       Iterate over the pointers registered with the given idr. The callback function will be
       called for each pointer currently registered, passing the id, the pointer and the data
       pointer passed to this function. It is not safe to modify the idr tree while in the
       callback, so functions such as idr_get_new and idr_remove are not allowed.

       We check the return of fn each time. If it returns anything other than 0, we break out and
       return that value.

       The caller must serialize idr_for_each vs idr_get_new and idr_remove.

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