mpol_parse_str(9)

💅 mpol_parse_str(9) — the Kernel API Manual era 🎀

okay so bestie, this one is from the Kernel API Manual and it's genuinely so cute — it's the function that takes a string and turns it into a mempolicy, for the tmpfs mpol mount option. iykyk 🦋

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✨ NAME ✨

mpol_parse_str — parse string to mempolicy, for tmpfs mpol mount option. literally what it says on the tin, no cap 💖

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🌸 SYNOPSIS 🌸

int mpol_parse_str (char *str , struct mempolicy **mpol );

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🎀 ARGUMENTS 🎀

• str — string containing mempolicy to parse. it's giving "the raw text bestie, hand it over" 🫶
• mpol — pointer to struct mempolicy pointer, returned on success. so it's a pointer to a pointer, yes, double pointer main character energy, and the real result gets dropped in here when it all works out 👑

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💜 DESCRIPTION 💜

Format of input: <mode>[=<flags>][:<nodelist>]

that's it, that's the whole shape of it ✨ mode first, then optionally flags after an =, then optionally a nodelist after a :. iconic format fr fr 💅

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⭐ RETURN ⭐

0 on success, else 1 😭 so like, zero is the good one here — classic kernel behaviour, don't let the 0 trip you up bestie 💀

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🌈 SEE ALSO 🌈

• Kernel file ./mm/mempolicy.c
• numa_nearest_node(9)
• nearest_node_nodemask(9)
• folio_can_map_prot_numa(9)
• alloc_pages_mpol(9)
• vma_alloc_folio(9)
• alloc_pages(9)
• mpol_misplaced(9)
• mpol_shared_policy_init(9)
• mpol_to_str(9)

like a whole little friend group of mempolicy functions, obsessed actually 🧚💖

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bestie note: any changes in behaviour or details live in ./mm — go read the source if you need the deep lore, i'm just the messenger 🍓

kisses and good luck parsing, babes 💅🌸 — this page came to you from ./mm, October 2026 edition, mwah 😘✨