luo_flb_serialize(9)

Okay so welcome to luo_flb_serialize(9), live from the Kernel API Manual 💖 — this is the function that serializes all active FLB objects for KHO, and yes, it's giving main-character reboot energy. 🫶

🦋 NAME 🦋

luo_flb_serialize — serializes all active FLB objects for KHO. periodt.

✨ SYNOPSIS ✨

void luo_flb_serialize (void );

🎀 ARGUMENTS 🎀

• void — no arguments, bestie. Like, literally none. Not a single one. 💅

🌸 DESCRIPTION 🌸

So this function is called from the reboot path. It iterates through all registered File-Lifecycle-Bound (FLB) objects — yes, all of them, no skipping — and for each FLB that has been preserved (i.e., its reference count is greater than zero), it writes its metadata into the memory region designated for Kexec Handover. ✨

The serialized data includes:

• the FLB's compatibility string
• its opaque data handle
• and the final reference count

That combo is what allows the new kernel to find the appropriate handler and reconstruct the FLB's state. iykyk. 🔥

🧚 CONTEXT 🧚

Called from liveupdate_reboot, just before kho_finalize. So yeah, it's a “right before the handoff” moment, and it knows it. 💫

👑 SEE ALSO 👑

• Kernel file ./kernel/liveupdate/luo_flb.c — LUO File Lifecycle Bound Global Data(9)
• luo_flb_file_preserve(9)
• luo_flb_file_unpreserve(9)
• luo_flb_file_finish(9)
• luo_flb_unregister_all(9)
• liveupdate_register_flb(9)
• liveupdate_unregister_flb(9)
• liveupdate_flb_get_incoming(9)
• liveupdate_flb_get_outgoing(9)

Source/version vibes: ./kernel/liveupdate 💅 — dated October 2026 🎀. Bye bestie, go serialize responsibly! ✨