mas_next_range(9)

💅 mas_next_range(9) — Advance the maple state to the next range

okay so bestie, welcome to the mas_next_range(9) page from the Kernel API Manual ✨ this one is short but it still has lore, so let’s get into it 🍁

🌸 NAME 🌸

mas_next_range — advance the maple state to the next range. periodt 💅

✨ SYNOPSIS ✨

void * mas_next_range (struct ma_state *mas , unsigned long max );

🎀 ARGUMENTS 🎀

• mas — the maple state 🍁 yes, that’s the whole description, and honestly iconic.
• max — the maximum index to check. that’s your limit, bestie.

🦋 DESCRIPTION 🦋

so like, mas_next_range sets mas->index and mas->last to the range, fr fr.

⚠️ you must hold rcu_read_lock or the write lock — no cap, this is mandatory, do not skip the lock vibe check 😭

and yes, it can return the zero entry. not me warning you about the zero entry 💀 it’s literally allowed.

💖 RETURN 💖

returns the next entry, or NULL 🫶

👑 SEE ALSO 👑

Kernel file ./lib/maple_tree.c, plus all these maple-tree-adjacent besties:

• mas_prealloc_calc(9)
• mas_wr_preallocate(9)
• mas_insert(9)
• mas_alloc_cyclic(9)
• mas_walk(9)
• mte_dead_walk(9)
• mt_free_walk(9)
• mas_store(9)
• mas_store_gfp(9)
• mas_store_prealloc(9)
• mas_preallocate(9)
• mas_next(9)
• mt_next(9)
• mas_prev(9)
• mas_prev_range(9)
• mt_prev(9)
• mas_pause(9)
• mas_find_setup(9)
• mas_find(9)
• mas_find_range(9)
• mas_find_rev_setup(9)
• mas_find_rev(9)
• mas_find_range_rev(9)
• mas_erase(9)
• mas_nomem(9)
• mas_nomem_nofail(9)
• mtree_load(9)
• mtree_store_range(9)
• mtree_store(9)
• mtree_insert_range(9)
• mtree_insert(9)
• mtree_alloc_cyclic(9)
• mtree_erase(9)
• __mt_dup(9)
• mtree_dup(9)
• __mt_destroy(9)
• mtree_destroy(9)
• mt_find(9)
• mt_find_after(9)

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mwah 💋 — source: ./lib, dated October 2026 🌈