assert_on_flusher_thread(9)

💅 assert_on_flusher_thread(9)

okay so bestie, we're in the Kernel API Manual today and this one is short and sweet — literally a vibe check for your kernel thread. no cap. 🫶

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✨ NAME ✨

assert_on_flusher_thread — Check that we are on the flusher thread. 💅

like, that's the whole personality. we are verifying we're standing on the right thread. periodt.

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🌸 SYNOPSIS 🌸

void assert_on_flusher_thread (struct flusher *flusher , const char *caller );

returns nothing (void), takes two args, checks a vibe. iconic behaviour honestly. 💖

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🦋 ARGUMENTS 🦋

• flusher — The flusher. 💫 (yes that's the whole description and honestly? she said what she said.)
• caller — The function which is asserting. 📞 like the little name tag for whoever's doing the checking.

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🎀 SEE ALSO 🎀

the whole flusher friend group 🫶 — all living in Kernel file ./drivers/md/dm-vdo/flush.c, and they're all in the group chat:

• 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)
• initialize_flush(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)

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⭐ sign-off ⭐

this lil masterpiece lives in ./drivers/md/dm-vdo, dated October 2026, manual section assert_on_flusher_thread(9) — go off, flusher thread, we're obsessed. 🧚💜🔥