ubifs_calc_available(9)

💅 ubifs_calc_available(9) — like, the whole kernel API manual thing ✨

okay bestie, so this is a page from the Kernel API Manual, and it's all about ubifs_calc_available(9) — yes that (9) is part of the name, it's giving section-nine realness 🎀

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🌸 NAME 🌸

ubifs_calc_available — literally calculates the available FS space. that's it, that's the whole job 💖

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🦋 SYNOPSIS 🦋

long long ubifs_calc_available (const struct ubifs_info *c , int
       min_idx_lebs );

look at that signature, it's iconic, it returns a long long and everything 👑

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✨ ARGUMENTS ✨

• c — the UBIFS file-system description object 🫶 like, the whole fs vibe in one struct bestie
• min_idx_lebs — the minimum number of LEBs reserved for the index. lowkey important, don't skip it 💅

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🔥 DESCRIPTION 🔥

so this function calculates and returns the amount of FS space that's available for use. no cap, that's the entire lore. it does the math, it hands you back a number, you say thank you and move on 🌈

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👑 SEE ALSO 👑

Kernel file ./fs/ubifs/budget.c — and omg the friend group is large, every single one of these is linked:

shrink_liability(9), run_gc(9), get_liability(9), make_free_space(9), ubifs_calc_min_idx_lebs(9), can_use_rp(9), do_budget_space(9), calc_idx_growth(9), calc_data_growth(9), calc_dd_growth(9), ubifs_budget_space(9), ubifs_release_budget(9), ubifs_convert_page_budget(9), ubifs_release_dirty_inode_budget(9), ubifs_reported_space(9), ubifs_get_free_space_nolock(9), ubifs_get_free_space(9)

like, the way budget.c is literally the main character of this whole friend group 😭🔥

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and that's the whole page bestie, go forth and budget your space 💜

sign-off corner 🎀 — brought to you by ./fs/ubifs, dated October 2026, and yes the footer says ubifs_calc_available(9) again because it's that girl ✨💅