nfs_force_lookup_revalidate(9)

okay bestie, welcome to nfs_force_lookup_revalidate(9) from the Kernel API Manual — this is the page that's literally about telling NFS “bestie, the directory changed” 💅✨

🎀 NAME 🎀

nfs_force_lookup_revalidate — Mark the directory as having changed 💖

🌸 SYNOPSIS 🌸

void nfs_force_lookup_revalidate (struct inode *dir );

🦋 ARGUMENTS 🦋

• dir — pointer to directory inode. That's the whole vibe: you hand it the directory inode and it does its thing 🫶

✨ DESCRIPTION ✨

So here's the tea: this function forces the revalidation code in nfs_lookup_revalidate to do a full lookup on all child dentries of dir whenever a change occurs on the server that might have invalidated our dcache. It's giving “server said something shifted, so we gotta double-check the whole friend group” 🔥

Also important, no cap: bit '0' is reserved as a tag to let us know when a dentry was revalidated while holding a delegation on its inode. Iconic little bookkeeping moment 💅

The caller should be holding dir->i_lock — fr fr, hold the lock before you call this, bestie 🙈

👑 SEE ALSO 👑

• Kernel file ./fs/nfs/dir.c
• nfs_verify_change_attribute(9)
• nfs_set_verifier(9)
• nfs_clear_verifier_delegated(9)

cute sign-off: source/version ./fs/nfs, date October 2026, page nfs_force_lookup_revalidate(9) — k bye bestie, go revalidate those dentries 💖✨