STRUCT LUO_FLB_SER(9)

💅 struct luo_flb_ser(9) 💅

okay so bestie, welcome to the Kernel API Manual — this one's all about struct luo_flb_ser, and no cap it's lowkey important 🫶

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✨ NAME ✨

struct luo_flb_ser — literally the serialized state of one single FLB object. that's it, that's the vibe ✨

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🌸 SYNOPSIS 🌸

struct luo_flb_ser {
    char name[LIVEUPDATE_FLB_COMPAT_LENGTH];
    u64 data;
    u64 count;
 };

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🎀 Members 🎀

• name — the unique compatibility string for the FLB object 💖 the new kernel uses it to sniff out the matching struct liveupdate_flb handler. it's giving "find your soulmate in the new kernel" energy.
• data — the opaque u64 handle that the FLB's .preserve operation handed back in the old kernel 👑 it's opaque on purpose, and it encapsulates the entire state you need for restoration. like a little time capsule fr fr.
• count — the reference count at the moment of serialization, i.e. the number of preserved files that depended on this FLB 🧚 the new kernel uses it to manage the FLB's lifecycle correctly. main character bookkeeping, honestly.

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🦋 Description 🦋

so here's the tea: an array of these structures gets created in a preserved memory region and passed over to the new kernel 🌈 each entry lets the LUO core restore one global, shared object. one entry, one object, slay 💅

careful bestie!! if this structure gets modified, LUO_ABI_COMPATIBLE must be updated. not optional. periodt. 😭

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⭐ SEE ALSO ⭐

• Kernel file ./include/linux/kho/abi/luo.h — Live Update Orchestrator ABI(9) 🔥
• struct luo_ser(9)
• struct luo_file_ser(9)
• struct luo_file_set_ser(9)
• struct luo_session_ser(9)
• struct luo_flb_header_ser(9)

go read them all, iykyk 💜

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and that's the whole page, bestie!! 🎀 this absolute icon lives in ./include/linux/kho/abi and it was dated October 2026 — you're welcome, go forth and serialize responsibly 💖🦋✨