STRUCT LIVEUPDATE_FLB_OP_ARGS(9)

✨ struct liveupdate_flb_op_args — Kernel API Manual ✨

okay so bestie, we're in the Kernel API Manual today and the star of the show is struct liveupdate_flb_op_args(9). it's giving "backstage pass to the FLB callbacks" and honestly? iconic. let's get into it 🫶

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🌸 NAME 🌸

struct liveupdate_flb_op_args — literally the arguments for FLB operation callbacks. no cap, that's the whole vibe. 💅

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🦋 SYNOPSIS 🦋

struct liveupdate_flb_op_args {
    struct liveupdate_flb *flb;
    u64 data;
    void *obj;
 };

that's the whole struct, copied exactly, don't @ me 🎀

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💖 Members 💖

okay so these are the three fields and each one is a main character in its own right:

• flb — the global FLB instance this call is being performed for. that's the context, the setting, the stage the whole scene happens on. 🌈
• data — this one's a little shape-shifter depending on which callback you're in, so pay attention bestie:
  • for .preserve: [OUT] — the callback sets this field. you're the one filling it in. 🖊️
  • for .unpreserve: [IN] — this is the handle that came from .preserve. it gets handed to you. 🫴
  • for .retrieve: [IN] — also the handle from .preserve. same energy, same handle. ✨
• obj — also doing the directional flip thing, lowkey:
  • for .preserve: [OUT] — set this to the live object. 🎯
  • for .retrieve: [OUT] — set this to the live object. yep, same thing again. 🎯
  • for .finish: [IN] — this is the live object from .retrieve. it comes back around, the circle is complete. 🔄

💀 reminder that [OUT] means you write it and [IN] means it's already been written for you. do not mix these up, i'm begging.

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🌟 Description 🌟

this structure bundles all the parameters for the FLB operation callbacks. that's it, that's the whole job — one cute little bundle so the callbacks don't have to juggle a million separate arguments. obsessed with the efficiency honestly. 👑

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🔥 SEE ALSO 🔥

• Kernel file ./include/linux/liveupdate.h struct
• liveupdate_file_op_args(9)
• struct liveupdate_file_ops(9)
• struct liveupdate_file_handler(9)
• struct liveupdate_flb_ops(9)
• struct liveupdate_flb(9)

go read those next, iykyk 📚

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okay that's the whole page, and for the sign-off: this one lives in ./include/linux and the date stamp is October 2026 — so like, future vibes only. stay hydrated, read your headers, and slay your callbacks 💜🧚‍♀️