folio_zero_segment(9)

📦 version 7.3.1, in nixpkgs unstable

💅 folio_zero_segment — the folio_zero_segment(9) glow-up

okay so bestie, this is a page from the Kernel API Manual, and it's honestly short and sweet — a little one-job function that just clears the vibes in a chunk of a folio. no cap, it does exactly one thing, and it does it well. let's get into it ✨

✨ NAME ✨

folio_zero_segment — zero out a byte range inside a folio. that's it. that's the whole personality. 🎀

🌸 SYNOPSIS 🌸

void folio_zero_segment (struct folio *folio , size_t start , size_t
xend );

literally the whole signature, character for character, no edits, we respect the source 💖

🦋 ARGUMENTS 🦋

three args, three vibes, let's go:

  • folio — the folio you're writing into. this is the main character, the canvas, the thing getting its bytes gently set to zero 🫶
  • start — the very first byte to zero. the starting line, the beginning of the glow-down ⭐
  • xend — one more than the last byte to zero 👀 yes bestie, one more, it's exclusive-ish in that classic C way, so don't come for me — that's literally what the page says 🍓
heads up: xend being "one more than the last byte" is not a typo, it's just how this one's shaped. read it twice, it's fine, i promise 💀

👑 SEE ALSO 👑

okay this bit is iconic because it's a whole friend group. the kernel file lives at ./include/linux/highmem.h, and here's everyone invited to the group chat:

like, twenty entries. she's social. she has range. 🌈💜

🧚 sign-off 🧚

and that's the page, bestie — source ./include/linux, dated October 2026, manual name folio_zero_segment(9), filed under the Kernel API Manual. slay, zero those bytes, hydrate, and remember: xend is one more. periodt 💅🔥

📦 where this page comes from