xa_store_bh(9)

✨ xa_store_bh(9) ✨

okay so bestie, this is a page from the Kernel API Manual for xa_store_bh(9) — yes the (9) is giving kernel-API energy 💅. Let's get into it, no cap.

---

🎀 NAME 🎀

xa_store_bh — Store this entry in the XArray. 💖

---

🌸 SYNOPSIS 🌸

void * xa_store_bh (struct xarray *xa , unsigned long index , void *entry , gfp_t gfp );

---

🦋 ARGUMENTS 🦋

• xa — XArray. The main character array itself 👑.
• index — Index into array. Where you're pointing, bestie 📍.
• entry — New entry. The new thing you're putting there ✨.
• gfp — Memory allocation flags. The allocation vibe check flags 🧚.

---

💖 DESCRIPTION 💖

okay so this function is like calling xa_store except it disables softirqs while holding the array lock. That's the whole little plot twist 🔥. It's giving "store, but make it softirq-safe" ✨.

---

🔥 CONTEXT 🔥

Any context. It takes and releases the xa_lock while disabling softirqs 🫶.

---

👑 RETURN 👑

The old entry at this index or xa_err if an error happened. So you get the previous occupant, or an error situation — iconic either way 💀✨.

---

🌈 SEE ALSO 🌈

Kernel file ./include/linux/xarray.h — plus the whole extended fam, fr fr:

• xa_mk_value(9), xa_to_value(9), xa_is_value(9), xa_tag_pointer(9), xa_untag_pointer(9), xa_pointer_tag(9), xa_is_zero(9), xa_is_err(9), xa_err(9)
• struct xa_limit(9), struct xarray(9), DEFINE_XARRAY_FLAGS(9), DEFINE_XARRAY(9), DEFINE_XARRAY_ALLOC(9), DEFINE_XARRAY_ALLOC1(9), xa_init_flags(9), xa_init(9), xa_empty(9), xa_marked(9)
• xa_for_each_range(9), xa_for_each_start(9), xa_for_each(9), xa_for_each_marked(9), xa_store_irq(9), xa_erase_bh(9), xa_erase_irq(9), xa_cmpxchg(9), xa_cmpxchg_bh(9), xa_cmpxchg_irq(9)
• xa_insert(9), xa_insert_bh(9), xa_insert_irq(9), xa_alloc(9), xa_alloc_bh(9), xa_alloc_irq(9), xa_alloc_cyclic(9), xa_alloc_cyclic_bh(9), xa_alloc_cyclic_irq(9)
• xa_reserve(9), xa_reserve_bh(9), xa_reserve_irq(9), xa_release(9), xa_is_sibling(9), xa_is_retry(9), xa_is_advanced(9), xa_update_node_t(9)
• XA_STATE(9), XA_STATE_ORDER(9), xas_error(9), xas_set_err(9), xas_invalid(9), xas_valid(9), xas_is_node(9), xas_reset(9), xas_retry(9), xas_reload(9)
• xas_set(9), xas_advance(9), xas_set_order(9), xas_set_update(9), xas_next_entry(9), xas_next_marked(9), xas_for_each(9), xas_for_each_marked(9), xas_for_each_conflict(9), xas_prev(9), xas_next(9)

---

okay bestie, that's the whole page 💖 source/version: ./include/linux · date: October 2026 · mwah 💋✨