nfs_page_create_from_page(9)

📦 version 7.3.1, in nixpkgs unstable

💅 nfs_page_create_from_page ✨

so this is a page from the Kernel API Manual — yes that manual — and bestie, we're talking about nfs_page_create_from_page(9). it does exactly what it says on the tin: creates an NFS read/write request. no cap.

🌸 SYNOPSIS 🌸

struct nfs_page * nfs_page_create_from_page (struct nfs_open_context
*ctx , struct page *page , unsigned int pgbase , loff_t offset ,
unsigned int count );

literally the whole personality right there 🫶

🎀 ARGUMENTS 🎀

  • ctx — the open context you're working with, like your plus-one for this request 💖
  • page — the page that's getting written, the main character of this whole operation 👑
  • pgbase — the starting offset inside the page where the write begins, iykyk 📍
  • offset — the file offset for the write, where it lands in the file, periodt
  • count — how many bytes we're reading or writing, the vibe check on size 🔥

🦋 DESCRIPTION 🦋

okay so important bit, listen up: the page must be locked by the caller. why? because that's the whole reason we never end up creating two different requests for the same page — the lock is what keeps us from being messy and duplicating ourselves 💅

and also, the user should make sure it's safe to sleep in this function. like, genuinely safe. don't just assume. 😭

fr fr, check both of those things before you call this. the lock and the sleeping. not optional, bestie.

💜 SEE ALSO 💜

Kernel file ./fs/nfs/pagelist.c, and also the whole squad — go read up on all of these:

and that's the whole page, bestie, you ate it 🍓 source and version: from ./fs/nfs, dated October 2026 — mwah, go lock that page and slay 💅✨🧚

📦 where this page comes from