vdo_waitq_no..._next_waiter(9)

✨ NAME ✨

vdo_waitq_notify_next_waiter — okay so this is the little function from the Kernel API Manual that notifies the next entry waiting in a waitq 💅

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🌸 SYNOPSIS 🌸

bool vdo_waitq_notify_next_waiter (struct vdo_wait_queue *waitq ,
vdo_waiter_callback_fn callback , void *context );

bestie it returns a bool, no cap 🫶

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🎀 ARGUMENTS 🎀

• waitq — the vdo_wait_queue that contains the waiter you wanna notify ✨ like, this is the queue, the whole vibe, the main character of the operation.
• callback — the function you call to notify the waiter — or pass NULL to just invoke the callback field that's registered in the waiter itself. iykyk 😌
• context — the context you pass on to the callback function. it just gets handed over, that's it, that's the job 🎁

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🦋 DESCRIPTION 🦋

So what it does is: it notifies the next entry waiting in a waitq to continue execution 🏃‍♀️💨 and it does that by invoking a callback function on it — but only after removing it from the waitq. order matters, literally. dequeue first, then callback. slay.

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🌈 RETURN 🌈

• true — if there was a waiter in the waitq 💖

(and yes, that means if there wasn't one, you're not getting true. the return value is the whole vibe check here 👑)

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🔥 SEE ALSO 🔥

Kernel file ./drivers/md/dm-vdo/wait-queue.c

• vdo_waitq_enqueue_waiter(9)
• vdo_waitq_transfer_all_waiters(9)
• vdo_waitq_notify_all_waiters(9)
• vdo_waitq_get_first_waiter(9)
• vdo_waitq_dequeue_matching_waiters(9)
• vdo_waitq_dequeue_waiter(9)

like go read the whole friend group honestly, they're all in ./drivers/md/dm-vdo 🧚‍♀️

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okay that's the whole page bestie!! brought to you by ./drivers/md/dm-vdo, dated October 2026 — vdo_waitq_no..._next_waiter(9) out 💜✨🎀