drm_pagemap_get_unless_zero(9)

✨ NAME ✨

okay so bestie, this is drm_pagemap_get_unless_zero(9) from the Kernel API Manual, and she is literally the “Obtain a reference on a struct drm_pagemap unless the current reference count is zero” icon 💅. no cap, that is the whole assignment 🎀.

🦋 SYNOPSIS 🦋

struct drm_pagemap * drm_pagemap_get_unless_zero (struct drm_pagemap
       *dpagemap );

🌸 ARGUMENTS 🌸

• dpagemap — pointer to the drm_pagemap or NULL. it’s giving “maybe a real pointer, maybe NULL, we’ll find out” energy 🙈.

🔥 RETURN 🔥

A pointer to dpagemap if the reference count was successfully incremented. NULL if dpagemap was NULL, or its refcount was 0. like, if the vibe check says no, you get NULL — periodt 💀.

👑 SEE ALSO 👑

these are the linked girlies, in order:

• Kernel file ./include/drm/drm_pagemap.h enum drm_interconnect_protocol(9)
• struct drm_pagemap_addr(9)
• drm_pagemap_addr_encode(9)
• struct drm_pagemap_ops(9)
• struct drm_pagemap(9)
• struct drm_pagemap_devmem_ops(9)
• drm_pagemap_get(9)
• struct drm_pagemap_devmem(9)
• struct drm_pagemap_migrate_details(9)
• drm_pagemap_page_zone_device_data(9)

mwah 💋 this page came from ./include/drm, dated October 2026, and it’s all about drm_pagemap_get_unless_zero(9). byeee bestie, go increment something 🫶✨