dma_pool_free(9)

✨ dma_pool_free(9) ✨

okay so this is from the Kernel API Manual, bestie, and it's literally the page for dma_pool_free. no cap, it's giving “put the block back” energy. 💅

🌸 NAME 🌸

dma_pool_free — put block back into dma pool

🦋 SYNOPSIS 🦋

void dma_pool_free (struct dma_pool *pool , void *vaddr , dma_addr_t dma
       );

🎀 ARGUMENTS 🎀

• pool — the dma pool that's holding the block
• vaddr — virtual address of the block
• dma — dma address of the block

💖 DESCRIPTION 💖

Here's the whole vibe, bestie: the caller promises that neither the device nor the driver will again touch this block unless it is first re-allocated. That's the promise. Periodt. ✨

🔥 SEE ALSO 🔥

Kernel file: ./mm/dmapool.c — plus the bestie squad of references:

• dma_pool_create_node(9)
• dma_pool_destroy(9)
• dma_pool_alloc(9)
• dmam_pool_create(9)
• dmam_pool_destroy(9)

cute lil sign-off: this page lives under ./mm, and the date on it is October 2026. 💜🫶