STRUCT UBIFS_ORPHAN(9)

🎀 struct ubifs_orphan(9) 🎀

okay so bestie, welcome to the Kernel API Manual 💖 this little cutie lives in the kernel and honestly? it's giving "small but crucial." let's get into it ✨

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🌸 NAME 🌸

struct ubifs_orphan — stores the inode number of an orphan. yeah. that's literally her whole job. no cap. 💅

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✨ SYNOPSIS ✨

struct ubifs_orphan {
    struct rb_node rb;
    struct list_head list;
    struct list_head new_list;
    struct ubifs_orphan *cnext;
    struct ubifs_orphan *dnext;
    ino_t inum;
    unsigned new:1;
    unsigned cmt:1;
    unsigned del:1;
 };

like, look at her. she's so structured 🫶 (pun intended, i had to 😭)

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🦋 Members 🦋

okay so let's meet the whole squad, one by one 👑

• rb — the rb-tree node of the rb-tree of orphans, sorted by inode number. she's literally in a whole sorted tree, main character energy 🔥
• list — the list head of the list of orphans in order added. first come, first served bestie ✨
• new_list — the list head of the list of orphans added since the last commit. the "new arrivals" crew 🎀
• cnext — the next orphan to commit. she's next in line, periodt 💅
• dnext — the next orphan to delete. yeah... she's on the way out 😭
• inum — the inode number. her whole identity tbh 🪪
• new — 1 => added since the last commit, otherwise 0. so if it's 1, she's fresh out the box 🌸
• cmt — 1 => commit pending, otherwise 0. pending bestie, we're waiting 🫠
• del — 1 => delete pending, otherwise 0. 💀 rip i guess

ngl these three bitfields being 1/0 flags is so lowkey elegant, i'm obsessed 🧚

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💜 SEE ALSO 💜

so like, the whole extended friend group 🥰 kernel file ./fs/ubifs/ubifs.h and literally all of these:

• struct ubifs_old_idx(9)
• struct ubifs_scan_node(9)
• struct ubifs_scan_leb(9)
• struct ubifs_gced_idx_leb(9)
• struct ubifs_inode(9)
• struct ubifs_unclean_leb(9)
• struct ubifs_lprops(9)
• struct ubifs_lpt_lprops(9)
• struct ubifs_lp_stats(9)
• struct ubifs_cnode(9)
• struct ubifs_pnode(9)
• struct ubifs_nbranch(9)
• struct ubifs_nnode(9)
• struct ubifs_lpt_heap(9)
• struct ubifs_wbuf(9)
• struct ubifs_bud(9)
• struct ubifs_jhead(9)
• struct ubifs_zbranch(9)
• struct ubifs_znode(9)
• struct bu_info(9)
• struct ubifs_node_range(9)
• struct ubifs_compressor(9)
• struct ubifs_budget_req(9)
• struct ubifs_mount_opts(9)
• struct ubifs_budg_info(9)
• struct ubifs_stats_info(9)
• struct ubifs_info(9)
• ubifs_check_hash(9)
• ubifs_check_hmac(9)
• ubifs_branch_hash(9)
• ubifs_copy_hash(9)
• ubifs_auth_node_sz(9)

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and that's the whole page babes 💖 this one's from ./fs/ubifs, dated October 2026, and we are so grateful she exists. go read the source, slay, and drink some water 🍓🧚‍♀️ bye bestie!! 👑