drm_mm_insert_node_generic(9)

💅 drm_mm_insert_node_generic 💅

okay so this is from the Kernel API Manual, and it's literally the "find me a hole and put my node in it" function. no cap, that's the whole vibe. ✨

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🌸 NAME 🌸

drm_mm_insert_node_generic — search for space and insert @node 🫶

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🎀 SYNOPSIS 🎀

int drm_mm_insert_node_generic (struct drm_mm *mm , struct drm_mm_node
*node , u64 size , u64 alignment , unsigned long color , enum
drm_mm_insert_mode mode );

bestie look at all those params, she's got range 💅

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🦋 ARGUMENTS 🦋

• mm — the drm_mm you're allocating from ✨
• node — a preallocated node, ready to be inserted 👑
• size — how big the allocation is 📏
• alignment — the alignment of the allocation, yes it matters 🎯
• color — an opaque tag value you slap on this node 🎨
• mode — fine-tune the allocation search and placement, this is the main character param 🔥

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💖 DESCRIPTION 💖

So this is a simplified version of drm_mm_insert_node_in_range, just without any range restrictions applied. it's giving "same energy, fewer rules" 😌✨

⚠️ okay important: the preallocated node must be cleared to 0. not optional, bestie. do it. 🙈

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⭐ RETURN ⭐

0 on success 🎉 and -ENOSPC if there's no suitable hole 😭 (no hole, no node, that's the rule)

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🌈 SEE ALSO 🌈

Kernel file ./include/drm/drm_mm.h plus the whole friend group: enum drm_mm_insert_mode(9), struct drm_mm_node(9), struct drm_mm(9), struct drm_mm_scan(9), drm_mm_node_allocated(9), drm_mm_initialized(9), drm_mm_hole_follows(9), drm_mm_hole_node_start(9), drm_mm_hole_node_end(9), drm_mm_nodes(9), drm_mm_for_each_node(9), drm_mm_for_each_node_safe(9), drm_mm_for_each_hole(9), drm_mm_insert_node(9), drm_mm_clean(9), drm_mm_for_each_node_in_range(9), drm_mm_scan_init(9) 🧚💜

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aaaand that's the page!! this one lives in ./include/drm, dated October 2026, and the whole thing is filed under drm_mm_insert_node_generic(9) — go forth and insert responsibly bestie 🍓💅💖