first_nnode(9)

💅 first_nnode — find the first nnode in memory ✨

okay so real talk, this page lives in the Kernel API Manual and it's your cheat sheet for finding the very first nnode chillin' in memory 🧚

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🌸 NAME 🌸

first_nnode — find the first nnode in memory 💖

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✨ SYNOPSIS ✨

struct ubifs_nnode * first_nnode (struct ubifs_info *c , int *hght );

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🎀 ARGUMENTS 🎀

• c — the UBIFS file-system description object, aka the whole vibe of the filesystem you're poking at 🫶
• hght — the height of the tree where the nnode was found gets returned right here, no cap 📏

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💅 DESCRIPTION 💅

so this function hands you back a pointer to the nnode it found — or NULL if literally no nnode turned up 😭 that's it, that's the whole thing.

it's a helper for ubifs_lpt_free, iykyk 🔥

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🦋 SEE ALSO 🦋

it's giving extended universe, bestie — the kernel file ./fs/ubifs/lpt_commit.c and this whole squad of friends 👑

• first_dirty_cnode(9)
• next_dirty_cnode(9)
• get_cnodes_to_commit(9)
• upd_ltab(9)
• alloc_lpt_leb(9)
• layout_cnodes(9)
• realloc_lpt_leb(9)
• write_cnodes(9)
• next_pnode_to_dirty(9)
• add_pnode_dirt(9)
• do_make_pnode_dirty(9)
• make_tree_dirty(9)
• need_write_all(9)
• lpt_tgc_start(9)
• lpt_tgc_end(9)
• populate_lsave(9)
• nnode_lookup(9)
• make_nnode_dirty(9)
• make_pnode_dirty(9)
• make_ltab_dirty(9)
• make_lsave_dirty(9)
• make_node_dirty(9)
• get_lpt_node_len(9)
• get_pad_len(9)
• get_lpt_node_type(9)
• is_a_node(9)
• lpt_gc_lnum(9)
• lpt_gc(9)
• ubifs_lpt_start_commit(9)
• free_obsolete_cnodes(9)
• ubifs_lpt_end_commit(9)
• ubifs_lpt_post_commit(9)
• next_nnode(9)
• ubifs_lpt_free(9)
• dbg_is_all_ff(9)
• dbg_is_nnode_dirty(9)
• dbg_is_pnode_dirty(9)
• dbg_is_ltab_dirty(9)
• dbg_is_lsave_dirty(9)
• dbg_is_node_dirty(9)
• dbg_check_ltab_lnum(9)
• dbg_check_ltab(9)
• dbg_chk_lpt_free_spc(9)
• dbg_chk_lpt_sz(9)
• dump_lpt_leb(9)
• ubifs_dump_lpt_lebs(9)
• dbg_populate_lsave(9)

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okay that's the whole page, periodt 💜 this lil drop came from ./fs/ubifs and it's stamped October 2026 — screenshot it, bookmark it, take it to the group chat, slay 🌈⭐