nilfs_cpfile...e_checkpoint(9)

📦 version 7.3.1, in nixpkgs unstable

✨ nilfs_cpfile_finalize_checkpoint(9) ✨

okay bestie so this is a page straight outta the Kernel API Manual — like, actual kernel-doc energy, we're in the big leagues now 🎀 and this one function, nilfs_cpfile_finalize_checkpoint, is out here finishing up checkpoint entries in nilfs2's cpfile. it's giving "last piece of the puzzle" and honestly? obsessed. 💅

💖 NAME 💖

nilfs_cpfile_finalize_checkpoint — fills in a checkpoint entry in cpfile ✨

🦋 SYNOPSIS 🦋

int nilfs_cpfile_finalize_checkpoint (struct inode *cpfile , __u64 cno ,
   struct nilfs_root *root , __u64 blkinc , time64_t ctime , bool minor );

like yes that's a whole lotta parameters but trust me, every single one is doing its job 🫶

🌸 ARGUMENTS 🌸

  • cpfile — the checkpoint file inode. it's the main character of this whole operation 👑
  • cno — the checkpoint number. every checkpoint's lil ID 🎀
  • root — the nilfs root object. hi bestie 🌈
  • blkinc — how many blocks this checkpoint added. the block count, the receipts, the "how much did we do" 📈
  • ctime — when this checkpoint got created. timestamp moment ⏰
  • minor — the minor checkpoint flag. yes/no, tiny/serious, iykyk 💀

🌟 DESCRIPTION 🌟

so here's the tea bestie: this function completes the checkpoint entry numbered by cno inside the cpfile, and it fills it in with all the data you handed over through root, blkinc, ctime, and minor. like it's literally finishing the sentence that the checkpoint started. slay. ✨

no cap, that's it — it takes your four bits of info and finalizes the entry. periodt. 💅

🔥 RETURN 🔥

returns 0 on success 🎉 — or one of these negative error codes if it goes sideways, which, 😭:

  • -ENOMEM — not enough memory available. the memory said "no ❤️"
  • -EIO — I/O error (including metadata corruption). the scary one 💀 the disk stuff went wrong or your metadata is corrupted, which, ngl, is a whole vibe check failure.

🧚 SEE ALSO 🧚

kernel file ./fs/nilfs2/cpfile.c, plus the whole nilfs_cpfile friend group 🫶:

and that's the whole page bestie 💖 go forth and finalize those checkpoints, no cap 🌈

okay signing off — this little masterpiece lives in ./fs/nilfs2, dated October 2026, and it's still part of the Kernel API Manual family 🎀 stay hydrated and remember: 0 on success is the only energy we accept 💅✨

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