tty_buffer_lock_exclusive(9)

💅 tty_buffer_lock_exclusive(9) 💅

okay bestie, welcome to the Kernel API Manual entry for the function that's lowkey the bouncer for your flip buffer — and yes, it's giving main character energy. 🫶

🌸 NAME 🌸

tty_buffer_lock_exclusive — gain exclusive access to buffer

✨ SYNOPSIS ✨

void tty_buffer_lock_exclusive (struct tty_port *port );

🎀 ARGUMENTS 🎀

• port — the tty port owning the flip buffer

🦋 DESCRIPTION 🦋

Okay so here's the tea: tty_buffer_lock_exclusive guarantees safe use of the tty_ldisc_ops.receive_buf method by excluding the buffer work and any pending flush from using the flip buffer. no cap, that's the whole point. 💅

Data can continue to be added concurrently to the flip buffer from the driver side — so the driver side is still allowed to do its thing, okay? It's not blocked, and that's iconic.

Also see tty_buffer_unlock_exclusive.

🌈 SEE ALSO 🌈

Kernel file ./drivers/tty/tty_buffer.c

• tty_buffer_unlock_exclusive(9)
• tty_buffer_space_avail(9)
• tty_buffer_free_all(9)
• tty_buffer_alloc(9)
• tty_buffer_free(9)
• tty_buffer_flush(9)
• __tty_buffer_request_room(9)
• tty_prepare_flip_string(9)
• tty_ldisc_receive_buf(9)
• flush_to_ldisc(9)
• tty_flip_buffer_push(9)
• tty_insert_flip_string_and_push_buffer(9)
• tty_buffer_init(9)
• tty_buffer_set_limit(9)

💖 that's the page, bestie — source/version ./drivers/tty, dated October 2026, for tty_buffer_lock_exclusive(9). periodt. 🫶✨