vdo_make_action_manager(9)

✨ vdo_make_action_manager(9) ✨

okay so bestie, welcome to the Kernel API Manual entry for vdo_make_action_manager(9) — yes the title is the same as the function name, iconic behavior honestly 🎀

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💅 NAME

vdo_make_action_manager — literally just: make an action manager. that's it. that's the whole vibe 🦋

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🌸 SYNOPSIS

int vdo_make_action_manager (zone_count_t zones ,
vdo_zone_thread_getter_fn get_zone_thread_id , thread_id_t
initiator_thread_id , void *context , vdo_action_scheduler_fn scheduler
, struct vdo *vdo , struct action_manager **manager_ptr );

like, seven arguments?? she's thriving on parameters, no cap 💀 but it returns an int, so at least there's a return code to check. always check it, bestie 🫶

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✨ ARGUMENTS ✨

• zones — a zone_count_t, aka the number of zones the actions are gonna be applied to. think of it as "how many girlies are we doing this for" 🌈
• get_zone_thread_id — a vdo_zone_thread_getter_fn, which is a function that gets the thread id that's associated with a zone. it's giving "you go find out who's on shift" energy 🔥
• initiator_thread_id — a thread_id_t: the thread on which actions may be initiated. main character thread, periodt 👑
• context — a void * that holds the per-zone context for the action. it's the little bag of stuff each zone carries around 🎀
• scheduler — a vdo_action_scheduler_fn, a function that schedules a next action after an action concludes, but only if there's no pending action. and plot twist: it may be NULL 🫶 (yes bestie, NULL is legal here, don't panic)
• vdo — the struct vdo * used to initialize completions ⭐
• manager_ptr — a pointer to a struct action_manager * that's gonna hold the new action manager. like an empty tote bag waiting for the new manager to be dropped in 🦋

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💖 RETURN

VDO_SUCCESS or an error code. so cute, so simple — check it, don't sleep on it 😭

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🧚 SEE ALSO

• Kernel file ./drivers/md/dm-vdo/action-manager.c
• struct action(9)
• struct action_manager(9)
• vdo_schedule_default_action(9)
• vdo_schedule_action(9)
• vdo_schedule_operation(9)
• vdo_schedule_operation_with_context(9)

go read the whole crew, iykyk 💜

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aaaand that's the page bestie! 💅 this one lives in ./drivers/md/dm-vdo, dated October 2026, and it's filed under vdo_make_action_manager(9) — go make some action managers, slay 🌟🍓