memblock_find_in_range(9)

💖 NAME 💖

memblock_find_in_range — bestie, this is the one that finds free area in given range, no cap 🎯✨

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🌸 SYNOPSIS 🌸

phys_addr_t __init_memblock memblock_find_in_range (phys_addr_t start ,
phys_addr_t end , phys_addr_t size , phys_addr_t align );

(it lives in the Kernel API Manual, if you were wondering where this Queen resides 👑)

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🎀 ARGUMENTS 🎀

• start — where the candidate range begins, the starting line of the whole search, okurrr 🌱
• end — where the candidate range stops. And listen: this one can legitimately be MEMBLOCK_ALLOC_ANYWHERE or MEMBLOCK_ALLOC_ACCESSIBLE, so it's not always a plain ol' number, she has ✨options✨
• size — how big a free area you're trying to find. That's the bag you're looking for 💅
• align — the alignment the free area you find needs to have. yes alignment matters, it always matters 🔥

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🦋 DESCRIPTION 🦋

So what it does: it finds a free area of size, aligned to align, inside the range you specified. That's it. That's the whole vibe. It's giving "search party, but for memory" 🧚✨

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⭐ RETURN ⭐

• Found address on success 🎉
• 0 on failure 😭 (yeah, zero. rough. we've all been there)

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👑 SEE ALSO 👑

The whole memblock friend group showed up, and honestly? iconic 🫶 Go read up on these:

• Kernel file ./mm/memblock.c
• memblock overview(9)
• __memblock_find_range_bottom_up(9)
• __memblock_find_range_top_down(9)
• memblock_find_in_range_node(9)
• memblock_discard(9)
• memblock_double_array(9)
• memblock_merge_regions(9)
• memblock_insert_region(9)
• memblock_add_range(9)
• memblock_add_node(9)
• memblock_add(9)
• memblock_validate_numa_coverage(9)
• memblock_isolate_range(9)
• memblock_free(9)
• memblock_phys_free(9)
• memblock_setclr_flag(9)
• memblock_mark_hotplug(9)
• memblock_clear_hotplug(9)
• memblock_mark_mirror(9)
• memblock_mark_nomap(9)
• memblock_clear_nomap(9)
• memblock_reserved_mark_noinit(9)
• memblock_reserved_mark_kern(9)
• memblock_mark_kho_scratch(9)
• memblock_clear_kho_scratch(9)
• __next_mem_range(9)
• __next_mem_range_rev(9)
• memblock_set_node(9)
• memblock_alloc_range_nid(9)
• memblock_phys_alloc_range(9)
• memblock_phys_alloc_try_nid(9)
• memblock_alloc_internal(9)
• memblock_alloc_exact_nid_raw(9)
• memblock_alloc_try_nid_raw(9)
• memblock_alloc_hugetlb(9)
• memblock_alloc_try_nid(9)
• __memblock_alloc_or_panic(9)
• memblock_estimated_nr_free_pages(9)
• memblock_is_region_memory(9)
• memblock_is_region_reserved(9)
• memblock_free_all(9)
• reserve_mem_find_by_name(9)
• reserve_mem_release_by_name(9)

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💀 fr fr, that's the whole list. iykyk. go touch some memblock 🌈

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okay bye bestie, mwah 💋 this lil page came from the ./mm corner of the world and it's dated October 2026 — memblock_find_in_range(9), signing off 🎀✨💜