initialize_flush(9)

💅 initialize_flush(9) — like, the Kernel API Manual page you actually wanna read 🎀

okay bestie, welcome to the Kernel API Manual ✨ this one's all about initialize_flush, and honestly? it's short, it's sweet, it's giving "small function, big responsibilities." let's get into it 🦋

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✨ NAME ✨

initialize_flush — the function that gets a vdo_flush structure all set up and ready to go. that's it, that's the whole vibe 💖

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🌸 SYNOPSIS 🌸

void initialize_flush (struct vdo_flush *flush , struct vdo *vdo );

no cap, that's the whole signature. returns nothing (void), takes two pointers, does its thing 🫶

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💜 ARGUMENTS 💜

• flush — the flush we're initializing. this is the glow-up recipient, the main character of the operation 👑
• vdo — the vdo that's being flushed. the context, the setting, the scenery 🌈

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🔥 DESCRIPTION 🔥

so here's the tea, bestie ☕ — initialize_flush initializes a vdo_flush structure, and in the process it transfers all the bios in the flusher's waiting_flush_bios list over to it. like, every single one. moving day for bios 📦✨

⚠️ and this is the important part, so listen up: the caller MUST already hold the lock. not "should," not "probably wants to" — MUST. capital letters, no exceptions, periodt 💀🔒

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👀 SEE ALSO 👀

family reunion time, here's everybody related to this function 🧚:

• assert_on_flusher_thread(9)
• as_flusher(9)
• completion_as_vdo_flush(9)
• vdo_waiter_as_flush(9)
• vdo_make_flusher(9)
• vdo_free_flusher(9)
• vdo_get_flusher_thread_id(9)
• finish_notification(9)
• flush_packer_callback(9)
• increment_generation(9)
• notify_flush(9)
• flush_vdo(9)
• check_for_drain_complete(9)
• vdo_complete_flushes(9)
• vdo_dump_flusher(9)
• vdo_launch_flush(9)
• release_flush(9)
• vdo_complete_flush_callback(9)
• select_bio_queue(9)
• vdo_complete_flush(9)
• vdo_drain_flusher(9)
• vdo_resume_flusher(9)

and if you're feeling nosy, the kernel file lives at ./drivers/md/dm-vdo/flush.c — go read it, iykyk 📖💅

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that's the whole page, bestie — go forth and initialize responsibly 🦋✨ this cutie came straight out of ./drivers/md/dm-vdo, dated October 2026, in the Kernel API Manual. mwah, love u, bye 💖🎀