dma_buf_free_sgt(9)

💅 dma_buf_free_sgt(9) 💅

Hey bestie, welcome to the Kernel API Manual page for dma_buf_free_sgt — it’s giving “unmap the buffer” energy and we’re gonna read it together, fr fr. 🦋✨

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🌸 NAME 🌸

dma_buf_free_sgt — unmaps the buffer 💅

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✨ SYNOPSIS ✨

void dma_buf_free_sgt (struct dma_buf_attachment *attach , struct sg_table *sgt , enum dma_data_direction dir );

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🎀 ARGUMENTS 🎀

• attach [in] — attachment to unmap buffer from 🫶
• sgt [in] — scatterlist info of the buffer to unmap ✨
• dir [in] — direction of DMA transfer 🌈

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🦋 DESCRIPTION 🦋

Okay so the description is short and sweet: this unmaps a DMA mapping for attached obtained by dma_buf_phys_vec_to_sgt. That’s the whole lore, no cap. 💀

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💖 SEE ALSO 💖

• Kernel file: ./drivers/dma-buf/dma-buf-mapping.c 📁
• struct dma_buf_dma(9) 👑
• dma_buf_phys_vec_to_sgt(9) 🔥

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signing off from ./drivers/dma-buf with so much love 💖 — October 2026 ✨🎀