ubifs_lpt_start_commit(9)

💅 ubifs_lpt_start_commit(9) — from the Kernel API Manual, bestie 🎀

okay so this is a page straight out of the Kernel API Manual, and it's about ubifs_lpt_start_commit — the little function that kicks off a UBIFS commit. yes we're in kernel land. yes it's giving main character energy. let's go ✨

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🌸 NAME 🌸

ubifs_lpt_start_commit — UBIFS commit starts. literally that's the whole vibe: the commit begins here 💖

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✨ SYNOPSIS ✨

int ubifs_lpt_start_commit (struct ubifs_info *c );

that's the whole signature, no cap. it takes one pointer and hands you back an int 🫶

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🎀 ARGUMENTS 🎀

• c — the UBIFS file-system description object. that's it. that's the whole argument. she's lowkey the whole world though, because she's the filesystem 💅

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🔥 DESCRIPTION 🔥

okay so here's the tea ☕ — you have to call this function when UBIFS starts the commit operation. it's not optional, it's the moment everything begins.

what she does is "freeze" all the currently dirty LEB properties. like, frozen. locked in. 🧊 after this call she does not change them anymore. periodt.

and the further changes that come along later? those get saved and tracked separately, because they are not part of this commit. so they're off doing their own thing in their own little bucket, iykyk 🙈

return value check bestie: this function returns zero in case of success, and a negative error code in case of failure. so if you get a negative number back, something went wrong and you should absolutely be paying attention 😭

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🦋 SEE ALSO 🦋

this is the part where she tags all her friends. the kernel file lives at ./fs/ubifs/lpt_commit.c, and honestly the friend group is long — 49 of them, all listed right here, all (9) sections, all iconic in their own way 👑

• 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)
• free_obsolete_cnodes(9)
• ubifs_lpt_end_commit(9)
• ubifs_lpt_post_commit(9)
• first_nnode(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)

like I said. big friend group. all of them matter, all of them get a tag 🫶

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ngl if you're reading this at 3am with a kernel panic on the other monitor, drink some water and remember: negative return = bad, zero = slay 💀✨

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and that's the page, bestie! this one came from ./fs/ubifs, dated October 2026, and it's page ubifs_lpt_start_commit(9) — bookmark her, she's a keeper 🍓🧚💜