wl_get_wle(9)

💅 wl_get_wle(9) — like, the kernel API manual bestie 🎀

okay so this is a section 9 page from the Kernel API Manual, and the star of the show is wl_get_wle ✨ buckle up, it's a short one but it's iconic.

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💖 NAME 💖

wl_get_wle — get a mean wl entry to be used by ubi_wl_get_peb() or refill_wl_user_pool() 🫶

like yes, that's literally the whole vibe: it hands you a mean wear-leveling entry, and the two functions that wanna use it are ubi_wl_get_peb() and refill_wl_user_pool(). no cap, those are the exact names, don't @ me.

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✨ SYNOPSIS ✨

struct ubi_wl_entry * wl_get_wle (struct ubi_device *ubi );

that's it. that's the whole signature. she's compact, she's efficient, she ate 💅

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🌸 ARGUMENTS 🌸

• ubi — a UBI device description object 🦋 that's the one and only thing you pass in, and it's literally the description of your UBI device, periodt.

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🦋 DESCRIPTION 🦋

so here's the tea ☕ this function returns a wear leveling entry in case of success, and NULL in case of failure 😭

that's it. that's the whole description. no hidden lore, no extra options, no environments variables, no exit statuses — just "you get a struct ubi_wl_entry *, or you get NULL" 💀

lowkey important: check for that NULL, bestie. failure is a real possibility here, it's not just decorative 🙈

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👑 SEE ALSO 👑

first up, the kernel file where this whole situation lives: ./drivers/mtd/ubi/wl.c 📁 and then the extended fam, in exactly this order:

• wl_tree_add(9)
• wl_entry_destroy(9)
• do_work(9)
• in_wl_tree(9)
• in_pq(9)
• prot_queue_add(9)
• find_wl_entry(9)
• find_mean_wl_entry(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)

thirty-four references, all present and accounted for, not me counting them or anything 💀✨ iykyk.

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and that's the page!! 🫶 this lil beauty comes from ./drivers/mtd/ubi and it's dated October 2026 — so mark your calendar, bestie, this one's from the future 🌈⭐💜