ubi_wl_get_peb(9)

💅 ubi_wl_get_peb(9) — the kernel API manual, but make it make sense

okay so bestie, this is the ubi_wl_get_peb page from the kernel API manual (manual name: ubi_wl_get_peb(9), iykyk) and it's literally so short but so important. let's get into it 💖

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✨ NAME ✨

ubi_wl_get_peb — get a physical eraseblock. that's it. that's the whole function. she does one thing and she does it well. 🎀

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🌸 SYNOPSIS 🌸

int ubi_wl_get_peb (struct ubi_device *ubi );

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🦋 ARGUMENTS 🦋

• ubi — the UBI device description object. your whole entire device, in struct form. main character energy fr.

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💜 DESCRIPTION 💜

okay so here's the vibe: this function returns a physical eraseblock in case of success, and a negative error code in case of failure. no cap, that's the deal. 🫶

⚠️ but wait — major plot twist — it returns with ubi->fm_eba_sem held in read mode! like, it hands you the eraseblock and the semaphore at the same time. so don't be out here acting brand new about the semaphore situation, bestie. you gotta deal with that. 😭💅

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👑 SEE ALSO 👑

the kernel file lives at ./drivers/mtd/ubi/wl.c, and you are not gonna believe how many friends she has. protective squad, activated: 🌈

• 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)
• 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)

like, she's not alone, she's got a whole group chat. slay. 🔥

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and that's the page, bestie! 🍓 this little gem came to you from ./drivers/mtd/ubi, dated October 2026, under the manual page name ubi_wl_get_peb(9) — periodt. 💖✨