v4l2_m2m_buf_remove_by_buf(9)

📦 version 7.3.1, in nixpkgs unstable

💅 v4l2_m2m_buf_remove_by_buf — Kernel API Manual ✨

okay so bestie, welcome to the group chat. We're talking about v4l2_m2m_buf_remove_by_buf(9) today — the V4L2 mem2mem kernel API function that literally just yanks one very specific buffer out of the ready-buffers list. No searching, no vibes-based guessing. You point at the buffer, and it's gone. Iconic. 🎀

🌸 NAME 🌸

v4l2_m2m_buf_remove_by_buf — take off exact buffer from the list of ready buffers 💖

like… not "a" buffer. not "whichever one's up next." THE exact one. iykyk.

✨ SYNOPSIS ✨

void v4l2_m2m_buf_remove_by_buf (struct v4l2_m2m_queue_ctx *q_ctx ,
struct vb2_v4l2_buffer *vbuf );

no cap, that's the whole signature. two args, returns nothing (it's void, she's a void girlie, she doesn't owe you a return value 🫶).

🦋 ARGUMENTS 🦋

  • q_ctx — pointer to struct v4l2_m2m_queue_ctx. this is the queue context, the little world the buffer's hanging out in. you're basically telling the function "she's in this queue, bestie."
  • vbuf — the buffer to be removed. THE buffer. the exact one. the main character. 💅

🌈 SEE ALSO 🌈

okay this is the part where I hold up the entire friend group and introduce everyone, because the SEE ALSO list here is long and honestly kind of iconic for it. Also, straight from the Kernel file ./include/media/v4l2-mem2mem.h:

like yes, that's a lot of friends. yes, you should probably meet them. no, i'm not gonna make you read all of them tonight — just know they're there and they all live in the same header. 🧚

tiny vibe check 💀: this page only gives you the NAME, the SYNOPSIS, the ARGUMENTS and the SEE ALSO. that's genuinely all that's documented here, bestie. if you need the behaviour deep-dive, the friends listed above are your group chat.

and that's the whole page, periodt. 🌟 this little slice of kernel lore comes to you from ./include/media 💜, dated October 2026 🗓️ — mwah, go forth and remove exactly the buffer you meant to remove 🫶✨

📦 where this page comes from