nilfs_cpfile..._list_offset(9)

📦 version 7.3.1, in nixpkgs unstable

💅 nilfs_cpfile..._list_offset — Kernel API Manual ✨

okay so bestie, welcome to the Kernel API Manual side of the group chat 🫶 this one's a lil niche but honestly kind of iconic once you get it. it's a nilfs_cpfile..._list_offset(9) situation, no cap.

🌸 NAME 🌸

nilfs_cpfile_cp_snapshot_list_offset — literally just does the math to figure out the byte offset of a checkpoint snapshot list, inside the folio that's holding it 🎀

✨ SYNOPSIS ✨

size_t nilfs_cpfile_cp_snapshot_list_offset (const struct inode *cpfile
, __u64 cno , struct buffer_head *bh );

like… yes that's the whole signature. slay 💅

🦋 ARGUMENTS 🦋

  • cpfile — the checkpoint file inode, bestie. that's the file we're poking at 🔥
  • cno — checkpoint number. a __u64, so it's got range, queen 👑
  • bh — buffer head of the block containing the checkpoint indexed by cno. yes, the exact block. precision ✨

⭐ RETURN ⭐

it hands you back a size_t — the byte offset, inside the folio, of the checkpoint snapshot list specified by cno 💖 that's it, that's the return. no drama, no surprises, just a byte offset living its best life 😭

👀 SEE ALSO 👀

Kernel file ./fs/nilfs2/cpfile.c — go read it, iykyk 📖 and while you're there:

🧚 friendly reminder: this is a kernel API page, so all the types, names and paths above are exact — no paraphrasing when you're actually writing the code, bestie 💀

k bye ily, this came from ./fs/nilfs2 and the version/date on the tin is October 2026 🍓🦋💜 don't forget to hydrate and also read your SEE ALSO list 🌈💅

📦 where this page comes from