do_calc_lpt_geom(9)

💖 do_calc_lpt_geom(9) 💖

hiii bestie, welcome to the Kernel API Manual, section 9. We're looking at do_calc_lpt_geom, and yes, it's giving kernel-internals realness — but make it cute.

🌸 NAME 🌸

do_calc_lpt_geom — calculate sizes for the LPT area.

✨ SYNOPSIS ✨

void do_calc_lpt_geom (struct ubifs_info *c );

🎀 ARGUMENTS 🎀

• c — the UBIFS file-system description object. It's the main character here, no cap.

🦋 DESCRIPTION 🦋

Okay so do_calc_lpt_geom calculates the sizes of LPT bit fields, nodes, and tree. It bases that on the properties of the flash and on whether the LPT is "big" (c->big_lpt). That's the whole vibe: flash properties plus the big-LPT check.

💜 SEE ALSO 💜

• Kernel file ./fs/ubifs/lpt.c ubifs_calc_lpt_geom(9), calc_dflt_lpt_geom(9), pack_bits(9), ubifs_unpack_bits(9), ubifs_pack_pnode(9), ubifs_pack_nnode(9), ubifs_pack_ltab(9), ubifs_pack_lsave(9), ubifs_add_lpt_dirt(9), set_ltab(9), ubifs_add_nnode_dirt(9), add_pnode_dirt(9), calc_nnode_num(9), calc_nnode_num_from_parent(9), calc_pnode_num_from_parent(9), ubifs_create_dflt_lpt(9), update_cats(9), replace_cats(9), check_lpt_crc(9), check_lpt_type(9), unpack_pnode(9), ubifs_unpack_nnode(9), unpack_ltab(9), unpack_lsave(9), validate_nnode(9), validate_pnode(9), set_pnode_lnum(9), ubifs_read_nnode(9), read_pnode(9), read_ltab(9), read_lsave(9), ubifs_get_nnode(9), ubifs_get_pnode(9), ubifs_pnode_lookup(9), ubifs_lpt_lookup(9), dirty_cow_nnode(9), dirty_cow_pnode(9), ubifs_lpt_lookup_dirty(9), ubifs_lpt_calc_hash(9), lpt_check_hash(9), lpt_init_rd(9), lpt_init_wr(9), ubifs_lpt_init(9), struct lpt_scan_node(9), scan_get_nnode(9), scan_get_pnode(9), ubifs_lpt_scan_nolock(9), dbg_chk_pnode(9), dbg_check_lpt_nodes(9)

That's the whole page, bestie. Footer flex: source/version ./fs/ubifs, date October 2026, and the manual page name do_calc_lpt_geom(9) — periodt. 🫶