memblock_find_in_range_node(9)

💖 memblock_find_in_range_node(9) 💖

okay bestie, welcome to the Kernel API Manual page for memblock_find_in_range_node(9) — it's lowkey the friend who finds you a free spot in the group chat, except the group chat is memory. 💅✨

🌸 NAME 🌸

memblock_find_in_range_node — find free area in given range and node 🦋

✨ SYNOPSIS ✨

the signature is right here, bestie — copy it exactly, no autocorrect:

phys_addr_t __init_memblock memblock_find_in_range_node (phys_addr_t
size , phys_addr_t align , phys_addr_t start , phys_addr_t end , int nid
, enum memblock_flags flags );

🎀 ARGUMENTS 🎀

• size — size of free area to find. that's the amount you're hunting for, periodt. 💖
• align — alignment of free area to find. it's gotta line up cute. ✨
• start — start of candidate range.
• end — end of candidate range, can be MEMBLOCK_ALLOC_ANYWHERE or MEMBLOCK_ALLOC_ACCESSIBLE. yes those are the named options, don't improvise. 🎀
• nid — nid of the free area to find, NUMA_NO_NODE for any node. so if you don't care which node, that's the vibe. 🦋
• flags — pick from blocks based on memory attributes. iykyk. 💅

💅 DESCRIPTION 💅

Find size free area aligned to align in the specified range and node. that's literally the whole description, and honestly? iconic. 🎀

🫶 RETURN 🫶

Found address on success, 0 on failure. so 0 means it didn't find one, bestie — don't celebrate a zero. 😭

🦋 SEE ALSO 🦋

these are the linked manual besties, all of them, no skipping:

• Kernel file ./mm/memblock.c memblock overview(9)
• __memblock_find_range_bottom_up(9)
• __memblock_find_range_top_down(9)
• memblock_find_in_range(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)

xoxo, your Unix bestie 💖 — source ./mm, dated October 2026, mwah 🫶