xas_set_mark(9)

💅 xas_set_mark(9) — from the Kernel API Manual, bestie

okay so picture this: you're deep in XArray land, you've got an entry, and you want to mark it. not just the entry though — the whole ancestor situation above it too. that's this function. she's giving "i told everyone in the group chat" energy. 🎀

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✨ NAME ✨

xas_set_mark — Sets the mark on this entry and its parents. fr fr, that's the whole pitch. 👑

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🦋 SYNOPSIS 🦋

void xas_set_mark (const struct xa_state *xas , xa_mark_t mark );

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🌸 ARGUMENTS 🌸

• xas — the XArray operation state. your little passport through the tree, yk? 🛂
• mark — Mark number. which mark bestie, pick one. 💅

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🌈 DESCRIPTION 🌈

So here's what goin on: xas_set_mark sets the specified mark on this entry, and then — this is the iconic part — it walks up the tree setting it on all the ancestor entries too. no cap, the whole bloodline gets the mark. 👑

it does nothing if xas has not been walked to an entry, or is in an error state. like, nothing at all. it's not gonna guess for you. 💀

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💜 SEE ALSO 💜

Kernel file ./lib/xarray.c — and honestly the whole XArray cinematic universe:

• xas_load(9)
• xas_nomem(9)
• xas_free_nodes(9)
• xas_create_range(9)
• xas_store(9)
• xas_get_mark(9)
• xas_clear_mark(9)
• xas_init_marks(9)
• xas_split_alloc(9)
• xas_split(9)
• xas_try_split_min_order(9)
• xas_try_split(9)
• xas_pause(9)
• xas_find(9)
• xas_find_marked(9)
• xas_find_conflict(9)
• xa_load(9)
• __xa_erase(9)
• xa_erase(9)
• __xa_store(9)
• xa_store(9)
• __xa_cmpxchg(9)
• __xa_insert(9)
• xa_store_range(9)
• xas_get_order(9)
• xa_get_order(9)
• __xa_alloc(9)
• __xa_alloc_cyclic(9)
• __xa_set_mark(9)
• __xa_clear_mark(9)
• xa_get_mark(9)
• xa_set_mark(9)
• xa_clear_mark(9)
• xa_find(9)
• xa_find_after(9)
• xa_extract(9)
• xa_delete_node(9)
• xa_destroy(9)

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mwah 💋 that's the page! this lil cutie lives in ./lib, dated October 2026 — stay marked, stay iconic, and go read xas_get_mark(9) next, iykyk 🫶✨