drm_mode_mmap_dumb_ioctl(9)

✨ NAME ✨

okay so bestie, this is drm_mode_mmap_dumb_ioctl(9) from the Kernel API Manual — and it's literally about creating an mmap offset for a dumb backing storage buffer. no cap, that's the whole title vibe. 💅

🌈 SYNOPSIS 🌈

       int drm_mode_mmap_dumb_ioctl (struct drm_device *dev , void *data ,
       struct drm_file *file_priv );

🎀 ARGUMENTS 🎀

• dev — DRM device. the main character of this little function, honestly.
• data — ioctl data. yes bestie, that's the data right there.
• file_priv — DRM file info. iconic, necessary, we love her.

💅 DESCRIPTION 💅

So what it does is allocate an offset in the drm device node's address space so you can memory map a dumb buffer. that's the serve. ✨

Called by the user via ioctl. periodt. 🫶

🦋 RETURN 🦋

• Zero on success. slay. 💖
• negative errno on failure. tragic, but important to know. 😭

🔥 SEE ALSO 🔥

• Kernel file ./drivers/gpu/drm/drm_dumb_buffers.c overview(9)
• drm_mode_size_dumb(9)

and that's the tea 🍓 this page's source/version footer is ./drivers/gpu/drm, dated October 2026, and it's the drm_mode_mmap_dumb_ioctl(9) manual. bye bestie, ily 💜