nilfs_sufile_set_error(9)

📦 version 7.3.1, in nixpkgs unstable

💅 nilfs_sufile_set_error(9) — the "this segment is SO cancelled" page 🎀

Okay bestie, welcome to the Kernel API Manual page for nilfs_sufile_set_error — yeah the title's a mouthful, but trust, it's giving "small function, big consequences" energy and we're gonna get through it together, fr fr. 🦋

✨ NAME ✨

nilfs_sufile_set_error — mark a segment as erroneous 👑 (aka: flag it, shame it, never speak its name again)

🌸 SYNOPSIS 🌸

int nilfs_sufile_set_error (struct inode *sufile , __u64 segnum );

No cap, that's the whole signature. Cute, right? 💖

💜 ARGUMENTS 💜

  • sufile — inode of segment usage file. Yes, the segment usage file's own inode. It's giving main character energy, honestly 🌟
  • segnum — segment number. The actual segment you're pointing at and going "yeah, that one." 🙈

🧚 DESCRIPTION 🧚

So here's the vibe check: nilfs_sufile_set_error marks the segment specified by segnum as erroneous. 💀

And that's not a temporary time-out, bestie — the error segment will never be used again. Like, ever. It's not coming back to the group chat. It's not getting un-invited. That segment is done. 🫶

⚠️ Lowkey important: this is permanent. Re-read that line before you call it, mwah 💋

🌈 RETURN 🌈

0 on success 🎉 — icon status, we love to see it.

Or, if things go sideways, one of these negative error codes:

  • -EINVAL — Invalid segment usage number. (you passed a number that does not slay 😭)
  • -EIO — I/O error (including metadata corruption). (the disk said "not today" 💀)
  • -ENOMEM — Insufficient memory available. (the RAM budget said no 🍓)

🔥 SEE ALSO 🔥

Kernel file ./fs/nilfs2/sufile.h — go read it, iykyk 📖

Plus the whole friend group:

They all ate, no crumbs. ✨

Alright bestie, that's the whole page — brought to you from ./fs/nilfs2, dated October 2026, and sitting pretty in the Kernel API Manual. Mwah, go forth and mark those segments, but like... only the ones that deserve it. 💅🎀

📦 where this page comes from