zero_ino_node_unused(9)

💅 zero_ino_node_unused(9) — a Kernel API Manual moment 🎀

okay so bestie, welcome to the Kernel API Manual, and today's main character is zero_ino_node_unused. no cap, it's tiny, it's iconic, and it does exactly one thing. let's get into it ✨

---

🌸 NAME 🌸

zero_ino_node_unused — zero out unused fields of an on-flash inode node.

like literally, it takes the leftover bits of an inode node that's headed to flash and fills them with zeros. that's the whole vibe check. 🫶

---

✨ SYNOPSIS ✨

void zero_ino_node_unused (struct ubifs_ino_node *ino );

that's it. that's the whole signature. no return value (void, she gives nothing back and that's on purpose 💅), one argument, one job. periodt.

---

🦋 ARGUMENTS 🦋

• ino — the inode to zero out. that's the one. hand her the inode node and she clears out the fields nobody's using. main character energy for the zeroing 💀✨

---

🎀 SEE ALSO 🎀

okay so this is the part where we give credit to the whole friend group — the kernel file lives at ./fs/ubifs/journal.c, and here's literally every single related page, no skips, no shade:

• zero_dent_node_unused(9)
• zero_trun_node_unused(9)
• reserve_space(9)
• write_head(9)
• __queue_and_wait(9)
• wait_for_reservation(9)
• wake_up_reservation(9)
• add_or_start_queue(9)
• make_reservation(9)
• release_head(9)
• finish_reservation(9)
• get_dent_type(9)
• pack_inode(9)
• mark_inode_clean(9)
• ubifs_jnl_update(9)
• ubifs_jnl_write_data(9)
• ubifs_jnl_write_inode(9)
• ubifs_jnl_delete_inode(9)
• ubifs_jnl_xrename(9)
• ubifs_jnl_rename(9)
• truncate_data_node(9)
• ubifs_jnl_truncate(9)
• ubifs_jnl_delete_xattr(9)
• ubifs_jnl_change_xattr(9)

go read them all, iykyk 💖🔥

---

ngl the whole page is just one function doing one little zeroing task and honestly? we stan a lowkey legend. 🌈⭐

---

and that's the tea, bestie 🍓 — this little gem comes from ./fs/ubifs, dated October 2026, and it's filed under zero_ino_node_unused(9). slay 💜🧚