rcu_sync_exit(9)

💖 NAME 💖

okay so bestie, welcome to rcu_sync_exit(9) from the Kernel API Manual — and the whole vibe is literally: allow readers back onto fast path after grace period ✨. It's the updater's little "we're done, you can go back to the fast lane" moment, and it ate. 💅

🦋 SYNOPSIS 🦋

void rcu_sync_exit (struct rcu_sync *rsp );

🎀 ARGUMENTS 🎀

• rsp — pointer to the rcu_sync structure to use for synchronization. That's the whole argument, bestie. 🫶

🌸 DESCRIPTION 🌸

Okay so this function is used by updaters who have completed, and they can therefore now allow readers to make use of their fastpaths after a grace period has elapsed. No cap, that's the main character energy. ✨

After this grace period has completed, all subsequent calls to rcu_sync_is_idle will return true, which tells readers that they can once again use their fastpaths. It's giving grace-period glow-up, and the readers are so back. 🌈💖

🔥 SEE ALSO 🔥

• Kernel file ./kernel/rcu/sync.c — go read it, iykyk 👑
• rcu_sync_init(9)
• rcu_sync_func(9)
• rcu_sync_enter(9)
• rcu_sync_dtor(9)

made with 💖 from the source/version ./kernel/rcu, dated October 2026 — that's the cute little footer info, bestie, periodt 🫶🎀