STRUCT IIO_BUFFER(9)

✨ struct iio_buffer(9) ✨

okay bestie, this is struct iio_buffer from the Kernel API Manual — literally the general buffer structure, the blueprint, the moment 💅

---

🌸 NAME 🌸

struct iio_buffer — the general buffer structure, no cap 🫶

---

🎀 SYNOPSIS 🎀

struct iio_buffer {
    unsigned int length;
    unsigned long flags;
    size_t bytes_per_datum;
    enum iio_buffer_direction direction;
    const struct iio_buffer_access_funcs *access;
    long *scan_mask;
    struct list_head demux_list;
    wait_queue_head_t pollq;
    unsigned int watermark;
 };

---

💖 Members 💖

Here's the full roster, every single one, because we don't skip members in this house:

• length — how many datums are chilling in the buffer. the headcount fr.
• flags — the file ops flags, and yes that includes the busy flag. she's flagging. 🚩
• bytes_per_datum — size of one individual datum, timestamp included. every byte counts, periodt.
• direction — which way the data stream flows (in/out). are we incoming or outgoing bestie?
• access — the buffer access functions tied to whatever implementation is running. her entourage ✨
• scan_mask — the bitmask used when masking scan mode elements. masking, but make it bitwise 💅
• demux_list — the list of operations needed to demux the scan. demux is a whole vibe.
• pollq — the wait queue that lets polling happen on the buffer. she waits, she polls, she serves 👑
• watermark — how many datums to wait for on poll/read. the threshold, the standard, the bar 🍓

---

🦋 Description 🦋

real talk: the internals of this structure are only interesting to people writing new buffer implementations. that's it. that's the audience. if that's not you, you can lowkey just vibe elsewhere — this is not your main character moment 🙈

---

🌈 SEE ALSO 🌈

• Kernel file ./include/linux/iio/buffer_impl.h
• INDIO_BUFFER_FLAG_FIXED_WATERMARK(9)
• struct iio_buffer_access_funcs(9)
• iio_update_buffers(9)
• iio_buffer_init(9)

---

and that's the whole page, bestie 💜

signing off from ./include/linux/iio, dated October 2026 — stay iconic, go read your buffer implementations, and remember: struct iio_buffer(9) ate and left no crumbs 🔥⭐