cache_key_cutfront(9)

💅 cache_key_cutfront(9) 💅

okay bestie, welcome to the Kernel API Manual page for cache_key_cutfront(9) — it’s giving tiny function, very specific job, and honestly? iconic. 💖

✨ NAME ✨

cache_key_cutfront — cuts a specified length from the front of a cache key. periodt. 💅

🌸 SYNOPSIS 🌸

void cache_key_cutfront (struct pcache_cache_key *key , u32 cut_len );

🎀 ARGUMENTS 🎀

• key — a pointer to the pcache_cache_key structure. yes bestie, it’s a pointer. 🫶
• cut_len — the length to cut from the front. literally the amount getting chopped. ✂️

🦋 DESCRIPTION 🦋

so what it does is advance the cache key position by cut_len, and it adjusts offset and length accordingly. that’s the whole vibe: move forward by cut_len, then keep offset and length in sync. no cap. ✨

👑 SEE ALSO 👑

kernel file ./drivers/md/dm-pcache/cache.h, plus these besties:

• cache_seg_is_ctrl_seg(9)
• cache_seg_id_valid(9)
• cache_key_cutback(9)
• cache_key_data_crc(9)
• kset_onmedia_valid(9)
• cache_seg_remain(9)
• cache_key_invalid(9)
• cache_key_lstart(9)
• cache_key_lend(9)
• cache_pos_onmedia_crc(9)

and that’s the page, bestie 💜 — it’s from ./drivers/md/dm-pcache, dated October 2026, and the manual name is Kernel API Manual. slay. 🌈