swap_cache_del_folio(9)

📦 version 7.3.1, in nixpkgs unstable

💅 swap_cache_del_folio(9) — the Kernel API Manual page you didn't know you needed 🎀

okay so bestie, welcome to the swap_cache_del_folio(9) glow-up ✨ this is the Kernel API Manual page in question, and we're about to make it make sense. no cap.

✨ NAME ✨

swap_cache_del_folio — literally just removes a folio from the swap cache. that's it. that's the whole vibe. 🦋

🌸 SYNOPSIS 🌸

void swap_cache_del_folio (struct folio *folio );

she takes one (1) argument and returns nothing back to you. void main character energy, honestly 💅

🎀 ARGUMENTS 🎀

  • folio — the folio. that's the folio in question. the folio we're talking about. yes, that one 🫶

💖 DESCRIPTION 💖

so this is the same as __swap_cache_del_folio, except this version handles the lock and the refcount for you like the responsible icon it is 👑

🚨 but listen, bestie, this part is serious: the caller must ensure the folio is either clean or has a swap count equal to zero. if you don't? it may cause data loss. actual data loss. like, gone-gone. not playing around with this one 😭💀

🔥 CONTEXT 🔥

the caller must ensure the folio is locked and in the swap cache. both. not one. both. this is the vibe check and you are not failing it 🌈

🧚 SEE ALSO 🧚

all of these live in the kernel file ./mm/swap_state.c:

go read them. iykyk 📚✨

<anyway>and that's the whole page, bestie — brought to you from the ./mm source and dated October 2026, signed off with a swap_cache_del_folio(9) and a little 🍓 for the road. mwah 💜</anyway>

📦 where this page comes from