get_cache_segment(9)

✨ NAME ✨

get_cache_segment — Retrieves a free cache segment from the cache. This is the Kernel API Manual entry for get_cache_segment(9), bestie, and it’s giving “grab a free segment if one’s available” energy. 💅

🎀 SYNOPSIS 🎀

okay so here’s the signature, copy-paste safe and everything:

struct pcache_cache_segment * get_cache_segment (struct pcache_cache
*cache );

💅 ARGUMENTS 💅

• cache — Pointer to the cache structure. That’s the whole argument, no cap. 🫶

🌸 DESCRIPTION 🌸

okay so here’s the tea: this function attempts to find a free cache segment that can be used. It locks the segment map and checks for the next available segment ID. If a free segment is found, it initializes it and returns a pointer to the cache segment structure. If there are no segments available, it returns NULL — literally no segments, no segment. 😭

🦋 SEE ALSO 🦋

• Kernel file ./drivers/md/dm-pcache/cache_segment.c
• cache_seg_set_next_seg(9)

mwah 💋 this cutie came from source/version ./drivers/md/dm-pcache, dated October 2026, and yes it’s still get_cache_segment(9) at the bottom — periodt, bestie 💖✨