get_file_rcu(9)

✨ get_file_rcu(9) — NAME ✨

okay so bestie, this is the get_file_rcu(9) page from the Kernel API Manual 💖 and the NAME is literally get_file_rcu — “try go get a reference to a file under rcu”.

🦋 SYNOPSIS 🦋

struct file * get_file_rcu (struct file __rcu **f );

🎀 ARGUMENTS 🎀

• f — the file to get a reference on. 🫶

💅 DESCRIPTION 💅

So what it does: it tries to get a reference on f, carefully verifying that f hasn't been reused.

💀 bestie caveat: this function should rarely have to be used, and only by users who understand the implications of SLAB_TYPESAFE_BY_RCU. Try to avoid it — like, seriously. 🙈

🔥 RETURN 🔥

Returns f with the reference count increased, or NULL. That's the whole vibe check. ✨

🌈 SEE ALSO 🌈

Kernel file ./fs/file.c:

• __file_ref_put(9)
• fd_install(9)
• file_close_fd_locked(9)
• last_fd(9)
• sys_close_range(9)
• file_close_fd(9)
• get_file_active(9)
• receive_fd(9)

okay bye bestie! 💜 source/version: ./fs; date: October 2026. get_file_rcu(9) out! 🫶🎀