Add the description of kernel data structure(hlist_head and hlist_node or hash table)

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Description

Contributor guide

Research direction

Review the existing linux insides content on data structures, then research the kernel source code for hlist head and hlist node. Write a clear description explaining their purpose and usage in the kernel's hash table implementation.

Tech stack

c

Domain

operating systemsdocumentation

Issue type

Documentation

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

2

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-3 hours

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

Stale

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

Clear

Prerequisites

Linux kernel basicsC programming

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

70