cache_key_destroy(9)

💖 NAME

okay so bestie, this is the cache_key_destroy(9) manual page — kernel API manual energy, and it's literally about freeing a cache key structure once its reference count drops to zero. no cap, that's the whole name vibe. 🫶

✨ SYNOPSIS

void cache_key_destroy (struct kref *ref );

🌸 ARGUMENTS

• ref — pointer to the kref structure. that's the one and only argument, and she's serving simplicity 💅

🦋 DESCRIPTION

okay so when the reference count of the cache key reaches zero, this function gets called. it's giving last-one-out cleanup duty 😭 — it frees the allocated cache key back to the slab cache. periodt.

🔥 SEE ALSO

• Kernel file: ./drivers/md/dm-pcache/cache_key.c
• cache_key_get(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)

and that's the whole page, bestie 🎀 this lil manual comes from source/version ./drivers/md/dm-pcache and it's dated October 2026. mwah, bye 💋