STRUCT UBIFS_ORPH_NODE(9)

💜 struct ubifs_orph_node(9) 💜

okay bestie, welcome to the Kernel API Manual — this little page is all about struct ubifs_orph_node, aka the orphan node. yes it's exactly as dramatic as it sounds 🫶 ngl the name is giving "sad little struct left behind" but it's actually doing real work in UBIFS, and we're gonna read it together, no cap.

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✨ NAME ✨

struct ubifs_orph_node — the orphan node. that's it, that's the vibe. short, sweet, iconic. 🎀

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🌈 SYNOPSIS 🌈

here's the whole shape of it, copy it exactly bestie, do not freestyle:

struct ubifs_orph_node {
    struct ubifs_ch ch;
    __le64 cmt_no;
    __le64 inos[];
};

like, look at her. three fields. main character energy. 👑

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🦋 MEMBERS 🦋

okay so now we go field by field, and yes every single one matters:

• ch — the common header. every node in this family has one, it's the little crown she wears. 💅
• cmt_no — the commit number. and here's the fun bit bestie, keep up: the top bit is also set on the last node of the commit. so it's the commit number plus a little "i'm the last one, k bye" signal. the multitasking?? immaculate. ✨
• inos — the inode numbers of orphans. plural, it's an array — she carries a whole squad of inode numbers in there, not just one. group chat energy fr fr. 💖

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🌸 SEE ALSO 🌸

go read the kernel file ./fs/ubifs/ubifs-media.h and then go hang out with the whole friend group:

• struct ubifs_ch(9)
• union ubifs_dev_desc(9)
• struct ubifs_ino_node(9)
• struct ubifs_dent_node(9)
• struct ubifs_data_node(9)
• struct ubifs_trun_node(9)
• struct ubifs_pad_node(9)
• struct ubifs_sb_node(9)
• struct ubifs_mst_node(9)
• struct ubifs_ref_node(9)
• struct ubifs_auth_node(9)
• struct ubifs_sig_node(9)
• struct ubifs_branch(9)
• struct ubifs_idx_node(9)
• struct ubifs_cs_node(9)

ngl that's a lot of structs. but they're all family, so. iykyk 💀

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and that's the page bb! 🧚 this one came to you from ./fs/ubifs, dated October 2026 — yes, the future, we're just that ahead of the game ⭐ slay, go forth and understand orphan nodes, periodt. 💜