cache_key_get(9)

💖 NAME 💖

okay so bestie, welcome to the Kernel API Manual page for cache_key_get(9) 🌸 — the function whose whole iconic job is: Increment the reference count of a cache key. No cap, that’s the vibe ✨

🎀 SYNOPSIS 🎀

void cache_key_get (struct pcache_cache_key *key );

🦋 ARGUMENTS 🦋

• key — pointer to the pcache_cache_key structure. That’s the whole guest list, bestie 🫶

💅 DESCRIPTION 💅

okay so cache_key_get increments the reference count of the specified cache key, and the whole point is making sure it is not freed while it’s still in use 🔥. It’s literally the “do not free this key yet” refcount bump — main-character protection bubble energy 💖.

It’s void, so there’s no return value to catch. Just the bump, bestie, and the key stays safe while it’s in use 🧚

🌈 SEE ALSO 🌈

• Kernel file: ./drivers/md/dm-pcache/cache_key.c
• cache_key_destroy(9)
• cache_key_append(9)
• cache_subtree_walk(9)
• cache_subtree_search(9)
• fixup_overlap_tail(9)
• fixup_overlap_contain(9)
• fixup_overlap_contained(9)
• fixup_overlap_head(9)
• cache_key_insert(9)
• clean_fn(9)

source/version: ./drivers/md/dm-pcache • date: October 2026 — stay cozy, keep your refcounts cute, and remember: don’t free the key while it’s still in use 💖✨