dma_buf_is_dynamic(9)

🦋 NAME

Okay so bestie, this page is dma_buf_is_dynamic from the Kernel API Manual, and it's literally here to check if a DMA-buf uses dynamic mappings. That's the whole vibe. 💅

✨ SYNOPSIS

bool dma_buf_is_dynamic (struct dma_buf *dmabuf );

🎀 ARGUMENTS

• dmabuf — the DMA-buf you want to check, bestie. That's the one getting the vibe check. 🫶

💖 DESCRIPTION

Returns true if a DMA-buf exporter wants to be called with the dma_resv locked for the map/unmap callbacks. Returns false if it doesn't want to be called with the lock held. No cap, that's the whole deal. ✨

🔥 SEE ALSO

Kernel file ./include/linux/dma-buf.h, plus these iconic little references:

• struct dma_buf_ops(9)
• struct dma_buf(9)
• struct dma_buf_attach_ops(9)
• struct dma_buf_attachment(9)
• struct dma_buf_export_info(9)
• DEFINE_DMA_BUF_EXPORT_INFO(9)
• get_dma_buf(9)

iykyk, go read the whole squad if you're deep in DMA-buf land 🧚

Signing off from ./include/linux, October 2026, on the dma_buf_is_dynamic(9) page — stay slay, stay locked, and check your mappings. 💜