STRUCT DMA_FENCE_ARRAY(9)

🌸 struct dma_fence_array(9) 🌸

okay so bestie, welcome to the Kernel API Manual ✨ this one's about struct dma_fence_array — and yes it's exactly what it sounds like, a fence that's actually a whole squad of fences 💅

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💖 NAME 💖

struct dma_fence_array — a fence that represents an array of fences 🫶

Like, one fence to rule them all. Group chat energy, but make it kernel. 👑

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✨ SYNOPSIS ✨

struct dma_fence_array {
    struct dma_fence base;
    unsigned num_fences;
    atomic_t num_pending;
    struct dma_fence **fences;
    struct irq_work work;
    struct dma_fence_array_cb callbacks[];
};

not me dropping the whole struct definition, it's giving very much "here's the receipts" 😭 every field, untouched, exactly as written. no cap. 🦋

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🎀 Members 🎀

okay so let's do the member-by-member vibe check, one by one, no skipping, we're not doing that 🙈

• base — the fence base class 🌱 like, the foundational main-character energy of this thing
• num_fences — number of fences in the array 🔢 we love a count
• num_pending — fences in the array that are still pending ⏳ the "read at 4:47pm" of the struct, honestly
• fences — array of the fences 🧚 literally the whole point of the struct, iconic
• work — internal irq_work function ⚡ internal, so don't @ her
• callbacks — array of callback helpers 🎁 little helper guys, love that for them

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💜 SEE ALSO 💜

go check these out bestie, iykyk 🌈

• Kernel file ./include/linux/dma-fence-array.h struct
• dma_fence_array_cb(9)
• to_dma_fence_array(9)
• dma_fence_array_for_each(9)

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and that's the whole page, periodt 💅 this little slice of the kernel universe lives in ./include/linux, and it's dated October 2026 — so when you're deep in the kernel at some ungodly hour, remember: the fences are arrayed, the callbacks are helping, and you're doing amazing 🫶🎀✨