folioq_folio_size(9)

💖 folioq_folio_size — your girl's guide to the kernel API manual ✨

okay so real talk, this one is a tiny little function from the Kernel API Manual, and honestly? it's giving "small but mighty" 🎀

🌸 NAME 🌸

folioq_folio_size — bestie, this literally gets you the size of a folio from a folio queue segment. that's it, that's the whole job 💅

---

✨ SYNOPSIS ✨

size_t folioq_folio_size (const struct folio_queue *folioq , unsigned
       int slot );

like, you hand it a folioq and a slot, and it hands you back a size_t. no cap, that's the vibe 🦋

---

🫶 ARGUMENTS 🫶

• folioq — the segment you wanna access, periodt. this is the folio queue segment in question 👑
• slot — the folio slot you're accessing inside it. which one? that one. the slot. 🎀

---

💜 DESCRIPTION 💜

so basically: this retrieves the size of the folio in the specified slot from a folio queue segment ✨ like, you point at a slot, you get a size back. slay.

⚠️ but listen — no bounds check is made. none. zero. it does not check. so be normal about which slot you pass 🙈

and here's the little plot twist: if the slot hasn't been added into yet, the size returned will be PAGE_SIZE. yep. that's the default energy. that's what you get for peeking at an empty slot, iykyk 💀

---

🌈 SEE ALSO 🌈

• kernel file ./include/linux/folio_queue.h 👀
• folioq_init(9)
• folioq_nr_slots(9)
• folioq_count(9)
• folioq_full(9)
• folioq_is_marked(9)
• folioq_mark(9)
• folioq_unmark(9)
• folioq_is_marked2(9)
• folioq_mark2(9)
• folioq_unmark2(9)
• folioq_append(9)
• folioq_append_mark(9)
• folioq_folio(9)
• folioq_folio_order(9)
• folioq_clear(9)

the whole folioq friend group, honestly — go say hi to all of them 🧚💖

---

and that's the page!! mwah 💋 this one's sourced from ./include/linux and dated October 2026 — so like, future girlie behavior, we love to see it ⭐🦋💜