dax_folio_reset_order(9)

💅 dax_folio_reset_order(9) — from the Kernel API Manual, bestie 🎀

Okay so picture this: you're deep in the kernel, everything's a big compound folio, and you just need it broken back down to its order-0 roots. That's literally what this function does. Welcome to the group chat. 💖

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✨ NAME ✨

dax_folio_reset_order — Reset a compound DAX folio to order-0 pages. It's giving "undo the glow-up and go back to basics." 🦋

🌸 SYNOPSIS 🌸

int dax_folio_reset_order (struct folio *folio );

🫶 ARGUMENTS 🫶

• folio — The folio to reset. This is your main character, the one getting the makeover reversal. 👑

💫 DESCRIPTION 💫

Bestie, listen. This function splits a compound folio back into individual order-0 pages. It clears the compound state (bye bye, big-page energy 💀) and restores the pgmap pointers. So it's literally the un-gluing of your folio back into its individual lil page babies. Obsessed with the precision honestly. 🌈

⭐ RETURN ⭐

It returns the original folio order — and if it was already order-0, you get 0. No cap. 🔥

🦋 SEE ALSO 🦋

Kernel file ./fs/dax.c plus the whole friend group:

• enum dax_wake_mode(9)
• dax_lock_folio(9)
• dax_layout_busy_page_range(9)
• dax_iomap_copy_around(9)
• dax_iomap_rw(9)
• dax_fault_iter(9)
• dax_iomap_fault(9)
• dax_finish_sync_fault(9)

iykyk, these are the folks you'll be vibing with next. 💜

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Sign-off moment: this icon of a manpage comes from ./fs, dated October 2026. Periodt. 🎀✨💅