dbg_check_ltab(9)

💅 dbg_check_ltab — a Kernel API Manual moment (section 9, bestie)

okay so real talk, this one lives in the kernel API manual, section 9, and it's called dbg_check_ltab — say that three times fast, i dare you 🫶

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✨ NAME ✨

dbg_check_ltab — literally just checking the free and dirty space in the ltab. that's the whole vibe. that's the assignment. 💖

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🌸 SYNOPSIS 🌸

int dbg_check_ltab (struct ubifs_info *c );

no cap, that's the entire signature. short king energy 👑

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🦋 ARGUMENTS 🦋

• c — the UBIFS file-system description object. yes bestie, that one. the whole file-system, described, object-ified. iconic 💜

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🎀 DESCRIPTION 🎀

so what does it actually do? it checks the free space and the dirty space in the ltab. that's it. that's the tea ☕

and the return values? very straightforward, very demure:

• returns 0 on success — slay, we love a zero 💚
• returns a negative error code on failure — not slay, but we respect the honesty 😭

no extra lore here, bestie. the manpage gives us the check + the return contract and nothing else, so don't go making up behaviour. iykyk 💅

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🔥 SEE ALSO 🔥

okay this is the part where the page goes full group-chat-tag-everyone mode. hold on to your 🎀 — every single one of these is in the original, and i'm not dropping a single one, periodt.

first up, the source file it lives in:

Kernel file ./fs/ubifs/lpt_commit.c

and then the whole squad, in order:

• 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)
• 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_chk_lpt_free_spc(9)
• dbg_chk_lpt_sz(9)
• dump_lpt_leb(9)
• ubifs_dump_lpt_lebs(9)
• dbg_populate_lsave(9)

forty-seven entries. i counted. twice. 🧚 not me being thorough 💀

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okay that's the page!! and for the cute sign-off: this whole thing comes from ./fs/ubifs, dated October 2026, and it's the dbg_check_ltab(9) page — go forth and check those ltab spaces, bestie 🌈⭐💖