ubifs_get_free_space(9)

💅 ubifs_get_free_space(9)

ok so this is a page from the Kernel API Manual — yes, the kernel has its own manual, she's iconic like that — and today's main character is ubifs_get_free_space. UBIFS bestie, free space bestie, let's go 🫶

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✨ NAME ✨

ubifs_get_free_space — returns the amount of free space. that's it. that's the whole job. and she does it beautifully 💖

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🌸 SYNOPSIS 🌸

long long ubifs_get_free_space (struct ubifs_info *c );

like, literally one argument. one. we love a low-maintenance function 💅

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🦋 ARGUMENTS 🦋

• c — the UBIFS file-system description object. that's the whole vibe, she just needs her file-system context and she's set 🎀

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⭐ DESCRIPTION ⭐

okay so what this function does: it calculates and returns the amount of free space to report to user-space 🎉 not me being obsessed with a function that does exactly what its name says — no cap, she's honest, she's direct, she's giving main character energy.

returns a long long, so she's got room to be generous with her numbers 🔥

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💜 SEE ALSO 💜

the whole budget.c friend group 👑 these all live in the kernel file ./fs/ubifs/budget.c:

• shrink_liability(9)
• run_gc(9)
• get_liability(9)
• make_free_space(9)
• ubifs_calc_min_idx_lebs(9)
• ubifs_calc_available(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)

go read them, they're all in the group chat 🫶

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and yes, ubifs_get_free_space_nolock(9) is literally right there in the list — she's the no-lock sibling, iykyk 💀

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okay that's the page!! 🌈 this one's from ./fs/ubifs, dated October 2026 — so like, future-girl era 🧚✨ mwah, go check your free space, bestie 💖🍓