nilfs_attac...e_node_cache(9)

💖 nilfs_attach_btree_node_cache(9) 💖

Okay bestie, welcome to the Kernel API Manual — this one lives in nilfs_attac...e_node_cache(9) and it's genuinely such a cute little helper. Let me tell you everything 🎀

---

✨ NAME ✨

nilfs_attach_btree_node_cache — attaches a B-tree node cache to the inode. That's it, that's the whole vibe 🦋

---

🌸 SYNOPSIS 🌸

int nilfs_attach_btree_node_cache (struct inode *inode );

One function, one argument, one int coming back at you. Slay.

---

🎀 ARGUMENTS 🎀

• inode — the inode object. Just your regular inode, nothing fancy, she's the main character here 👑

---

💅 DESCRIPTION 💅

So here's the tea: nilfs_attach_btree_node_cache attaches a B-tree node cache to inode. But lowkey if the inode already has one? She does nothing. No drama, no double-attaching, we respect the boundaries 🫶

The way it actually works: this function allocates an additional inode to maintain the page cache of B-tree nodes, and it does it one-on-one ✨ Like, one extra inode per thing, matching perfectly. It's giving organized. It's giving intentional. Obsessed fr fr 💖

---

⭐ RETURN ⭐

• 0 on success 🎉
• -ENOMEM if memory is insufficient 😭 (ngl, that's the only sad path here)

---

🦋 SEE ALSO 🦋

Kernel file ./fs/nilfs2/inode.c plus the whole friend group:

• struct nilfs_iget_args(9)
• nilfs_get_block(9)
• nilfs_read_folio(9)
• nilfs_detach_btree_node_cache(9)
• nilfs_iget_for_shadow(9)
• nilfs_write_inode_common(9)
• nilfs_dirty_inode(9)

Go read them, iykyk 👀

---

Heads up bestie: this is kernel API territory — the docs come straight from ./fs/nilfs2 and they're dated October 2026. So if you're poking around there, that's the source and the time, no cap 💀

That's the whole page, periodt. Go attach that cache, bestie, you're gonna do amazing 🌈💜🧚