fscrypt_free_bounce_page(9)

💖 fscrypt_free_bounce_page(9) 💖

okay so bestie, welcome to the Kernel API Manual — yes, the real one, no cap. this page is about fscrypt_free_bounce_page, and it's short, sweet, and honestly iconic for it. ✨

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✨ NAME ✨

fscrypt_free_bounce_page — free a ciphertext bounce page 🎀

like, it frees the thing. the bounce page. the ciphertext one. that's the whole vibe.

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🌸 SYNOPSIS 🌸

void fscrypt_free_bounce_page(struct page *bounce_page);

returns nothing (void), takes exactly one thing, does its little job. main character energy tbh.

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🦋 ARGUMENTS 🦋

• bounce_page — the bounce page to free, or NULL. that's it, that's the argument. pass the page you wanna yeet back into the void, or pass NULL and it's whatever. 🫶

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💅 DESCRIPTION 💅

so the way this works: you call fscrypt_free_bounce_page to free a bounce page, and that bounce page has to be one that was allocated by fscrypt_encrypt_pagecache_blocks. that's the whole contract. it's the designated cleanup bestie for that specific allocation, and it's not out here accepting random pages from the street. 🙈

free your bounce pages properly and it's giving responsible kernel citizen. periodt. 👑

⚠️ lowkey important: the page you hand over is supposed to be one from fscrypt_encrypt_pagecache_blocks — don't be out here freeing pages from other places and calling it a day. NULL is fine though, that's the one exception the page explicitly blesses. 💀

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🎀 SEE ALSO 🎀

• Kernel file ./fs/crypto/crypto.c — that's where the magic lives, go read it, iykyk
• fscrypt_encrypt_pagecache_blocks(9) ⭐
• fscrypt_encrypt_block_inplace(9) ⭐
• fscrypt_decrypt_block_inplace(9) ⭐
• fscrypt_initialize(9) ⭐

like the whole fscrypt crypto friend group, fr fr. go say hi to all of them. 🌈

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and that's the page!! ty for reading, ily, go free your bounce pages responsibly 💜

source location: ./fs/crypto · dated October 2026 · this has been your kernel api manual moment, mwah 🍓✨