nilfs_segbuf_wait(9)

💖 nilfs_segbuf_wait(9) 💖

okay so this is from the Kernel API Manual, section 9, and it's literally just one little function that's like "hey bestie, hold up a sec and let the I/O finish" 🫶

---

✨ NAME ✨

nilfs_segbuf_wait — wait for completion of requested BIOs

like, that's the whole job. you asked for some BIOs, now you wait for them to be done. no cap. 🎀

---

🌸 SYNOPSIS 🌸

int nilfs_segbuf_wait (struct nilfs_segment_buffer *segbuf );

---

🦋 ARGUMENTS 🦋

• segbuf — segment buffer 💅 (that's it, that's the whole argument, she's lowkey minimal)

---

👑 RETURN 👑

• 0 on success 🔥
• -EIO if I/O error is detected 😭

so basically: zero means we slayed, -EIO means the I/O said "nope" and something went wrong. tragic but at least it tells you.

---

⭐ SEE ALSO ⭐

• Kernel file ./fs/nilfs2/segbuf.c
• nilfs_segbuf_map_cont(9)
• nilfs_add_checksums_on_logs(9)
• nilfs_segbuf_write(9)

go read those next bestie, iykyk 💜

---

and that's the whole page!! ngl it's giving short-and-sweet main character energy 🧚

reminder: -EIO is the only failure code listed here, so don't go assuming any other return values exist, bestie 🙈

signing off from ./fs/nilfs2, dated October 2026 — mwah, bye! 💅💖🌈