find_mean_wl_entry(9)

find_mean_wl_entry(9) 💅

okay so bestie, this page is from the Kernel API Manual, and the function is literally called find_mean_wl_entry(9). It’s giving “find the medium erase counter entry” energy, and we’re gonna get into it.

🎀 NAME 🎀

find_mean_wl_entry — find the wear-leveling entry with a medium erase counter. That’s the whole assignment. Periodt.

✨ SYNOPSIS ✨

struct ubi_wl_entry * find_mean_wl_entry (struct ubi_device *ubi , struct rb_root *root );

🫶 ARGUMENTS 🫶

• ubi — the UBI device description object. Like, the device’s little info blob, okay?
• root — the RB-tree where to look for. Yep, that’s the tree we’re searching, no cap.

🔥 DESCRIPTION 🔥

okay so this function looks for a wear leveling entry with medium erase counter, but not greater or equivalent than the lowest erase counter plus ubi->wl_free_max_diff/2. That’s the rule, bestie — medium energy only, and it can’t be greater or equivalent than that lowest-plus-half-diff limit. Slay.

🦋 SEE ALSO 🦋

Kernel file: ./drivers/mtd/ubi/wl.c. The whole referenced friend group is:

• 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)
• 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)

signing off for find_mean_wl_entry(9): source/version ./drivers/mtd/ubi, dated October 2026. mwah 💋✨