mas_for_each(9)

💅 mas_for_each(9) — Kernel API Manual 💅

okay bestie, we're in the Kernel API Manual and today's main character is mas_for_each(9). it's giving "walk a range of the maple tree" energy, and yes, we're gonna go through every single deet. no cap. ✨

🌸 NAME 🌸

mas_for_each — Iterate over a range of the maple tree.

⭐ SYNOPSIS ⭐

mas_for_each (__mas , __entry , __max );

🎀 ARGUMENTS 🎀

• __mas — Maple Tree operation state (maple_state). it's the state your operation is carrying, periodt.
• __entry — Entry retrieved from the tree. literally the thing you got back, bestie.
• __max — maximum index to retrieve from the tree. the upper limit of the range.

🦋 DESCRIPTION 🦋

When returned, mas->index and mas->last will hold the entire range for the entry. yes, the whole range — both fields, no crumbs. 💅

💀 NOTE 💀

heads up, bestie: it may return the zero entry. that's the note, and we are respecting it. 🙈

🔥 SEE ALSO 🔥

• Kernel file ./include/linux/maple_tree.h
• Maple tree flags(9)
• MTREE_INIT(9)
• MTREE_INIT_EXT(9)
• mtree_empty(9)
• mas_reset(9)
• mas_for_each_rev(9)
• __mas_set_range(9)
• mas_set_range(9)
• mas_set(9)
• mt_init_flags(9)
• mt_init(9)
• mt_clear_in_rcu(9)
• mt_set_in_rcu(9)
• mt_for_each(9)

mwah 💋 this lil page is sourced from ./include/linux, dated October 2026, and it's all about mas_for_each(9). periodt ✨🫶