dma_fence_is_container(9)

📦 version 7.3.1, in nixpkgs unstable

💅 dma_fence_is_container(9)

okay so bestie, welcome to the Kernel API Manual — this little page is literally one tiny function that saves the kernel from a big ol' recursion meltdown, and you're gonna get it in like 30 seconds 🫶

✨ NAME ✨

dma_fence_is_container — the vibe check that tells you if a fence is a container for other fences 🎀

🌸 SYNOPSIS 🌸

bool dma_fence_is_container (struct dma_fence *fence );

that's it. one argument, one bool, no drama, periodt ✨

🦋 ARGUMENTS 🦋

  • fence — the fence you're testing. literally just hand it over and let the function do its thing 💅

🔥 DESCRIPTION 🔥

So it returns true if this fence is a container for other fences, and false otherwise. That's the whole job, no cap 😌

And why do we even care? Okay so this is the important part, bestie — we can't build up large fence structures, because otherwise we run into recursion during operations on those fences 😭 like, the whole point of this flag is to keep the kernel from tripping over itself in an infinite loop of fence-on-fence violence. so yeah, this check is lowkey iconic, it's giving "tiny function, huge responsibility" 👑

💖 SEE ALSO 💖

Kernel file ./include/linux/dma-fence.h — go read the source, iykyk 🌈

like, that's a whole friend group right there and every single one of them is worth a read 📚✨

ngl if you skipped to the bottom: true = it's a container, false = it's not, and the reason it matters is recursion. that's the tea 🍓

kisses bestie, this page came from the ./include/linux corner of the source tree, dated October 2026, and it lives at dma_fence_is_container(9) — go forth and container-check responsibly 💜👑

📦 where this page comes from