mt_free_walk(9)

🌸 NAME

okay so bestie, this page is mt_free_walk(9) from the Kernel API Manual — and it’s giving “walk & free a tree in the RCU callback context.” That’s the whole serve: you walk the tree, you free it, and you do it in RCU callback context. Periodt. 💅

✨ SYNOPSIS

void mt_free_walk (struct rcu_head *head );

🎀 ARGUMENTS

• head — the RCU head that's within the node. That’s it, that’s the argument, bestie. 🫶

💜 NOTE

⚠️ This can only be used from the RCU callback context. Not me being dramatic — that’s the actual rule, and it’s non-negotiable. 🔥

🦋 SEE ALSO

Kernel file: ./lib/maple_tree.c

• mas_prealloc_calc(9)
• mas_wr_preallocate(9)
• mas_insert(9)
• mas_alloc_cyclic(9)
• mas_walk(9)
• mte_dead_walk(9)
• mas_store(9)
• mas_store_gfp(9)
• mas_store_prealloc(9)
• mas_preallocate(9)
• mas_next(9)
• mas_next_range(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)

xoxo, your resident kernel bestie 💖 — source/version line is ./lib, date is October 2026, and yes this is mt_free_walk(9) from the Kernel API Manual. Byeee 👋✨