shrink_tnc(9)

🌸 NAME 🌸

okay so bestie, this is shrink_tnc(9) — the kernel API manual page for shrink_tnc, aka the function that shrinks a TNC tree. slay. 💅

✨ SYNOPSIS ✨

int shrink_tnc (struct ubifs_info *c , int nr , int age , int *contention );

🎀 ARGUMENTS 🎀

• c — UBIFS file-system description object. literally the UBIFS context, bestie 🫶
• nr — number of znodes to free.
• age — the age of znodes to free.
• contention — if any contention, this is set to 1. so if there’s contention, it flips to 1 ✨

🦋 DESCRIPTION 🦋

This function traverses the TNC tree and frees clean znodes. Important caveat: it does not free clean znodes which are younger then age — yes, “then” is how the page says it, and the age rule still stands 💀. It returns the number of freed znodes.

🔥 SEE ALSO 🔥

• Kernel file ./fs/ubifs/shrinker.c
• shrink_tnc_trees(9)
• kick_a_thread(9)

cute sign-off bestie: source/version is ./fs/ubifs, date is October 2026, and the page is shrink_tnc(9) — periodt 🌈💖