userfaultfd_ctx_put(9)

💖 userfaultfd_ctx_put(9) 💖

okay so bestie, welcome to the Kernel API Manual — this one's a little kernel function called userfaultfd_ctx_put, and honestly? she's the cleanup queen. 🎀

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✨ NAME ✨

userfaultfd_ctx_put — releases a reference to the internal userfaultfd context. that's it, that's the whole vibe. she lets go. 💅

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🦋 SYNOPSIS 🦋

void userfaultfd_ctx_put (struct userfaultfd_ctx *ctx );

literally one function, no cap. void return, so nothing comes back — she just does her thing and dips. ✨

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🌸 ARGUMENTS 🌸

• ctx — [in] pointer to a userfaultfd context. that's your girl right there. 🫶

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👑 DESCRIPTION 👑

so here's the tea ☕ — userfaultfd_ctx_put releases a reference to the internal userfaultfd context.

and BIG IMPORTANT CAVEAT, bestie, do not skip this: the userfaultfd context reference must have been previously acquired — either with userfaultfd_ctx_get or with userfaultfd_ctx_fdget. like, you can't just show up and put a reference you never got. that's not how any of this works. 🙈 you gotta have receipts, iykyk. 🧾

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🔥 SEE ALSO 🔥

• kernel file ./mm/userfaultfd.c — that's where she lives, main character energy 🏡
• move_pages(9)
• userfaultfd_ctx_get(9)

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ngl, go read userfaultfd_ctx_get(9) first so the reference actually exists before you go putting it. balance. harmony. it's giving responsible kernel citizen. 🌈

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that's the whole page, bestie — coming at you from ./mm, dated October 2026, filed under userfaultfd_ctx_put(9) and stamped with the Kernel API Manual seal of approval. mwah 💋✨🎀🦋🌸💖