drm_vma_node_unmap(9)

💅 drm_vma_node_unmap(9)

okay so bestie, welcome to the glow-up of <pink>drm_vma_node_unmap</pink> — straight out of the Kernel API Manual, no cap. this is the little function that ✨*unmaps offset nodes*✨ and honestly? it's giving cleanup crew energy. 🧹💖

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✨ NAME ✨

drm_vma_node_unmap — Unmap offset node 🔥

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🎀 SYNOPSIS 🎀

void drm_vma_node_unmap (struct drm_vma_offset_node *node , struct
       address_space *file_mapping );

that's the whole vibe, fr fr. it returns void, so like… it gives nothing back, it just does the thing. 👑

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🦋 ARGUMENTS 🦋

• node — the Offset node. this is our main character. 🌟
• file_mapping — the Address space to unmap node from. yes, we're ripping it out of this specific address space, iykyk. 💫

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🌸 DESCRIPTION 🌸

so what it literally does: Unmap all userspace mappings for a given offset node. all of them. periodt. 💅

here's the catch tho, and bestie you need to hear this — those mappings must be associated with the file_mapping address-space. that's the rule, no exceptions. 🫶

and if no offset exists? nothing happens. it just… does nothing. no drama, no error, just 🧚 silence. literally a nothing-burger.

⚠️ warning warning ⚠️ — This call is unlocked. as in, no lock, no safety net, no hand-holding. 😭 The caller must guarantee that drm_vma_offset_remove is not called on this node concurrently. if you let those two overlap, that's on you, not me. 🙈

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👑 SEE ALSO 👑

• Kernel file ./include/drm/drm_vma_manager.h 📁

and the whole friend group, alphabetically-ish, all present and accounted for:

• drm_vma_offset_exact_lookup_locked(9)
• drm_vma_offset_lock_lookup(9)
• drm_vma_offset_unlock_lookup(9)
• drm_vma_node_reset(9)
• drm_vma_node_start(9)
• drm_vma_node_size(9)
• drm_vma_node_offset_addr(9)
• drm_vma_node_verify_access(9)

go read those too, i'm not gonna gatekeep the lore. 📚✨

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aaaand that's the page, bestie. 🎀 this icon lives in ./include/drm, dated October 2026 — mark your calendars, screenshot it, put it on the fridge. 🧊💖 slay, study the header file, and please for the love of everything lock something for once. 🫶🌈⭐