table of contents
| DMA_BUF_KMAP(9) | Device drivers infrastructure | DMA_BUF_KMAP(9) |
NAME¶
dma_buf_kmap - Map a page of the buffer object into kernel address space. The same restrictions as for kmap and friends apply.
SYNOPSIS¶
void * dma_buf_kmap(struct dma_buf * dmabuf, unsigned long page_num);
ARGUMENTS¶
dmabuf
[in] buffer to map page from.
page_num
[in] page in PAGE_SIZE units to map.
DESCRIPTION¶
This call must always succeed, any necessary preparations that might fail need to be done in begin_cpu_access.
COPYRIGHT¶
| June 2024 | Kernel Hackers Manual 3.10 |