STRUCT DMA_BUF_DMA(9)

okay bestie, welcome to the Kernel API Manual page for struct dma_buf_dma — the manual name is folded right in here like a little name tag 🏷️✨ and yes, this is the struct that holds DMA mapping information. no cap.

🌸 NAME 🌸

struct dma_buf_dma — holds DMA mapping information. that’s the vibe, that’s the job 💅

✨ SYNOPSIS ✨

       struct dma_buf_dma {
           struct sg_table sgt;
           struct dma_iova_state *state;
           size_t size;
        };

💖 Members 💖

• sgt — the scatter-gather table, literally a scatter-gather table 🧺✨
• state — DMA IOVA state that’s relevant in IOMMU-based DMA 🫶
• size — the total size of the DMA transfer, the whole amount, no crumbs 💅

🔎 SEE ALSO 🔎

• Kernel file ./drivers/dma-buf/dma-buf-mapping.c
• dma_buf_phys_vec_to_sgt(9)
• dma_buf_free_sgt(9)

this page comes from ./drivers/dma-buf, it’s the October 2026 version, and it’s signed struct dma_buf_dma(9) — mwah, bye bestie 💜🦋