iio_buffer_release(9)

💖 iio_buffer_release(9) — or, how to free a buffer's resources 💖

okay so this is iio_buffer_release, straight out of the Kernel API Manual (yes, the kernel has lore, and yes, we're reading it 🎀). It's a tiny little function with one very important job, and honestly? It's giving "quiet quitting but make it refcount". Let's get into it ✨

---

🌸 SYNOPSIS 🌸

void iio_buffer_release (struct kref *ref );

that's it. that's the whole signature. one (1) parameter, zero (0) return value, and one very dramatic job description. slay 💅

---

🦋 ARGUMENTS 🦋

• ref — a pointer to the kref that's embedded inside the iio_buffer struct 🫶 that's the little refcount gremlin living rent-free inside the buffer, and it's the whole reason this function exists.

---

✨ DESCRIPTION ✨

so basically: this function gets called when the last reference to the buffer has been dropped. like, everybody else has left the group chat, the lights are off, the party's over — now this runs 🎀

when it runs, it will typically free all resources allocated by the buffer. so that's its whole vibe: cleanup era, closing time, releasing the resources back into the wild 🦋

💀 but bestie, listen to me very carefully: do NOT call this function manually. not once. not ever. not "just to see what happens". this is not a "learn by doing" situation, it's a "learn by reading the manpage" situation.

instead, whenever you're done using a buffer, you always, always, always use iio_buffer_put. that's the main character here — it handles the refcount properly so this function fires at exactly the right moment and not a second earlier. periodt 👑

it's giving "let the refcount cook" and honestly? respect the process 🌈

---

👑 SEE ALSO 👑

• the kernel file ./drivers/iio/industrialio-buffer.c 📁 (yes, the source of truth, go read it iykyk)
• iio_buffer_read(9)
• iio_buffer_poll(9)
• iio_buffer_wakeup_poll(9)
• iio_scan_mask_set(9)
• struct iio_demux_table(9)
• iio_validate_scan_mask_onehot(9)
• iio_push_to_buffers(9)
• iio_push_to_buffers_with_ts_unaligned(9)
• iio_buffer_get(9)
• iio_buffer_put(9)
• iio_device_attach_buffer(9)

like a whole friend group of buffer functions, and they all eat 🔥 go read them too, they're literally all connected 💜

---

and that's the page, bestie 🍓 sign-off time: this cutie lives under ./drivers/iio, dated October 2026, and it's filed as iio_buffer_release(9). no cap, that's the whole thing. mwah 💋🧚‍♀️🎀