in_wl_tree(9)

💅 in_wl_tree(9) — the wear-leveling tree vibe check

okay bestie, so this is a page from the Kernel API Manual, and honestly? it's a short one but it's a real one. Buckle up 🎀

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✨ NAME ✨

in_wl_tree — literally just checks if a wear-leveling entry is present in a WL RB-tree. that's it. that's the whole job. 🦋

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🌸 SYNOPSIS 🌸

int in_wl_tree (struct ubi_wl_entry *e , struct rb_root *root );

like, look at her. she takes two things and gives you back an int. iconic behavior honestly 👑

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🎀 ARGUMENTS 🎀

• e — the wear-leveling entry you're checking on. the main character of this little investigation 💖
• root — the root of the tree. the tree in question. the one we're searching 🌳

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⭐ DESCRIPTION ⭐

okay so here's the tea, and it's genuinely so simple i'm obsessed: this function returns non-zero if e is in the root RB-tree, and zero if it is not. that's the entire plot. no cap. 💀✨

like, it's giving "am i in the group chat or not" energy. one answer, two outcomes, zero drama 🫶

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👑 SEE ALSO 👑

the kernel file is ./drivers/mtd/ubi/wl.c bestie, and it's got a whole squad:

• wl_tree_add(9)
• wl_entry_destroy(9)
• do_work(9)
• in_pq(9)
• prot_queue_add(9)
• find_wl_entry(9)
• find_mean_wl_entry(9)
• wl_get_wle(9)
• prot_queue_del(9)
• ubi_sync_erase(9)
• serve_prot_queue(9)
• __schedule_ubi_work(9)
• schedule_ubi_work(9)
• schedule_erase(9)
• do_sync_erase(9)
• wear_leveling_worker(9)
• ensure_wear_leveling(9)
• __erase_worker(9)
• ubi_wl_put_peb(9)
• ubi_wl_scrub_peb(9)
• ubi_wl_flush(9)
• ubi_bitflip_check(9)
• tree_destroy(9)
• ubi_thread(9)
• shutdown_work(9)
• erase_aeb(9)
• ubi_wl_init(9)
• protection_queue_destroy(9)
• ubi_wl_close(9)
• self_check_ec(9)
• self_check_in_wl_tree(9)
• self_check_in_pq(9)
• produce_free_peb(9)
• ubi_wl_get_peb(9)

that's the whole friend group, go say hi to all of them 💜

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and finally, the little sign-off: this one lives under ./drivers/mtd/ubi, and it's dated October 2026 — yes bestie, future-dated, she's ahead of her time 🌈⭐

hope that helped, mwah 💅💖