dma_fence_chain_init(9)

✨ dma_fence_chain_init(9) ✨

okay so bestie, this one is from the Kernel API Manual, and it's literally the glow-up moment for a fence chain node 🎀 ngl the name sounds scary but it's giving "let me just set up your linked list of fences real quick" energy, and honestly? iconic.

🌸 NAME 🌸

dma_fence_chain_init — initialize a fence chain 💅

🦋 SYNOPSIS 🦋

void dma_fence_chain_init (struct dma_fence_chain *chain , struct
dma_fence *prev , struct dma_fence *fence , uint64_t seqno );

yes bestie, that's the whole signature, no cap ✨

🍓 ARGUMENTS 🍓

• chain — the chain node you're about to initialize 🎀 this is your main character
• prev — the previous fence, aka the one that came before 👑
• fence — the current fence, the one you're working with right now 💖
• seqno — the sequence number to use for the fence chain 🔥

🌈 DESCRIPTION 🌈

So here's the vibe: you're initializing a brand new chain node 💫 and then it does one of two things — either it starts a whole new chain, or it adds this node onto the existing chain of the previous fence (prev). That's it, that's the whole tea 🍵 two possible paths, one little init call, slay.

no cap, that's genuinely everything this one does — it's a small function with big main character energy 🫶

⭐ SEE ALSO ⭐

• Kernel file ./drivers/dma-buf/dma-fence-chain.c — go read the source, iykyk 💅
• dma_fence_chain_get_prev(9)
• dma_fence_chain_walk(9)
• dma_fence_chain_find_seqno(9)

and that's the page, bestie!! 🧚💜 this little gem lives in ./drivers/dma-buf, dated October 2026, and it's bringing you the Kernel API Manual realness. go forth and init your chains, periodt 🌸🔥