mtd_pairing_groups(9)

💖 mtd_pairing_groups(9) 💖

okay so bestie, welcome to the Kernel API Manual, section 9 — this one's a tiny little function from the MTD (memory technology device) world, and honestly? she's short but she matters. let's get into it ✨

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🌸 NAME 🌸

mtd_pairing_groups — get the number of pairing groups 🎀

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🦋 SYNOPSIS 🦋

int mtd_pairing_groups (struct mtd_info *mtd );

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💅 ARGUMENTS 💅

• mtd — pointer to new MTD device info structure. that's your struct mtd_info *, the whole vibe-check of the device, no cap 🫶

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✨ DESCRIPTION ✨

So what does she do? she returns the number of pairing groups. that's it, that's the whole job, and she does it flawlessly 👑

This number is usually equal to the number of bits exposed by a single cell 🔥 and here's the fun part — you can use it in conjunction with mtd_pairing_info_to_wunit to iterate over all pages of a given pair. literally the duo we didn't know we needed 💜

ngl, this is one of those "small function, big main character energy" situations. keep the pairing-group count and mtd_pairing_info_to_wunit together and you can walk every page of a pair, no drama 🙈

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🌈 SEE ALSO 🌈

Kernel file ./drivers/mtd/mtdcore.c — and like, the entire extended friend group 💖 :

• mtd_wunit_to_pairing_info(9)
• mtd_pairing_info_to_wunit(9)
• add_mtd_device(9)
• del_mtd_device(9)
• mtd_device_parse_register(9)
• mtd_device_unregister(9)
• register_mtd_user(9)
• unregister_mtd_user(9)
• get_mtd_device(9)
• of_get_mtd_device_by_node(9)
• get_mtd_device_nm(9)
• mtd_ooblayout_ecc(9)
• mtd_ooblayout_free(9)
• mtd_ooblayout_find_region(9)
• mtd_ooblayout_find_eccregion(9)
• mtd_ooblayout_get_bytes(9)
• mtd_ooblayout_set_bytes(9)
• mtd_ooblayout_count_bytes(9)
• mtd_ooblayout_get_eccbytes(9)
• mtd_ooblayout_set_eccbytes(9)
• mtd_ooblayout_get_databytes(9)
• mtd_ooblayout_set_databytes(9)
• mtd_ooblayout_count_freebytes(9)
• mtd_ooblayout_count_eccbytes(9)
• mtd_kmalloc_up_to(9)

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and that's the whole page, bestie — go read some MTD code, ily, mwah 💋

signing off from ./drivers/mtd — Kernel API Manual, section 9, dated October 2026 🎀✨🦋