1IDR_REPLACE(9)          Basic Kernel Library Functions          IDR_REPLACE(9)
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NAME

6       idr_replace - replace pointer for given id
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SYNOPSIS

9       void * idr_replace(struct idr * idp, void * ptr, int id);
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ARGUMENTS

12       idp
13           idr handle
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15       ptr
16           pointer you want associated with the id
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18       id
19           lookup key
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DESCRIPTION

22       Replace the pointer registered with an id and return the old value. A
23       -ENOENT return indicates that id was not found. A -EINVAL return
24       indicates that id was not within valid constraints.
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26       The caller must serialize with writers.
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29Kernel Hackers Manual 3.10         June 2019                    IDR_REPLACE(9)
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