request_resource(9)

💅 NAME 💅

okay bestie, meet request_resource(9) — your Kernel API Manual bestie for when you need to request and reserve an I/O or memory resource. literally the whole plot. 🎀

✨ SYNOPSIS ✨

int request_resource (struct resource *root , struct resource *new );

🦋 ARGUMENTS 🦋

• root — the root resource descriptor. the main character resource, iykyk.
• new — the resource descriptor desired by caller. the resource that’s asking to be let in. 🙈

🌸 DESCRIPTION 🌸

Returns 0 for success, negative error code on error. periodt. 💅

no extra plot twists here — that’s literally the whole vibe check. 🫶

🌈 SEE ALSO 🌈

Kernel file: ./kernel/resource.c — and here’s the whole friend group, no cap:

• request_resource_conflict(9)
• release_resource(9)
• find_next_res(9)
• walk_iomem_res_desc(9)
• region_intersects(9)
• find_resource_space(9)
• reallocate_resource(9)
• allocate_resource(9)
• lookup_resource(9)
• insert_resource_conflict(9)
• insert_resource(9)
• insert_resource_expand_to_fit(9)
• remove_resource(9)
• adjust_resource(9)
• resource_alignment(9)
• __request_region(9)
• __release_region(9)
• release_mem_region_adjustable(9)
• merge_system_ram_resource(9)
• devm_request_resource(9)
• devm_release_resource(9)
• devm_request_free_mem_region(9)
• alloc_free_mem_region(9)

source/version: ./kernel · date: October 2026 · title: request_resource(9) — mwah, bye bestie 💖🎀