Deepin Linux
Apr 24, 2026 · Fundamentals
Why Understanding Linux Memory Caches Is Essential for Mastering File Access
The article explains how Linux uses page cache, inode cache, and dentry cache to accelerate file operations, detailing their structures, lookup mechanisms, LRU eviction, and real‑world performance impact, and shows step‑by‑step path resolution with code examples.
Dentry CacheInode CacheLRU
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