STRUCT MEMBLOCK_TYPE(9)

💖 struct memblock_type(9) 💖

okay so bestie, welcome to the Kernel API Manual — this is the page for struct memblock_type, which is literally the whole concept of "a collection of memory regions of certain type". like, that's it, that's the vibe. one struct, one job. iconic.

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✨ NAME ✨

struct memblock_type — a collection of memory regions of certain type 🫶

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🎀 SYNOPSIS 🎀

struct memblock_type {
    unsigned long cnt;
    unsigned long max;
    phys_addr_t total_size;
    struct memblock_region *regions;
    char *name;
 };

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🌸 Members 🌸

• cnt — the number of regions. how many we actually got. the headcount 💅
• max — the size of the allocated array. like, the capacity we've committed to, not the number of guests who showed up.
• total_size — the size of all regions. all of them. together. the whole squad combined 🔥
• regions — the array of regions. this is the actual list, the main character of the whole struct ngl 🌟
• name — the memory type symbolic name. so it knows what to call itself. labels are self-care ✨

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🦋 SEE ALSO 🦋

Kernel file ./include/linux/memblock.h, plus literally all of these besties:

• enum memblock_flags(9)
• struct memblock_region(9)
• struct memblock(9)
• for_each_physmem_range(9)
• __for_each_mem_range(9)
• __for_each_mem_range_rev(9)
• for_each_mem_range(9)
• for_each_mem_range_rev(9)
• for_each_reserved_mem_range(9)
• for_each_mem_pfn_range(9)
• for_each_free_mem_range(9)
• for_each_free_mem_range_reverse(9)
• memblock_set_current_limit(9)
• memblock_region_memory_base_pfn(9)
• memblock_region_memory_end_pfn(9)
• memblock_region_reserved_base_pfn(9)
• memblock_region_reserved_end_pfn(9)
• for_each_mem_region(9)
• for_each_reserved_mem_region(9)

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ngl that's a lot of macro besties. go read them, they miss you. 💀

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so yeah, that's the whole page — straight out of ./include/linux, dated October 2026, and delivered to you with love from the Kernel API Manual. go be a linux girlie, you've got this 👑💜