Commit c25fff71 authored by Jesper Dangaard Brouer's avatar Jesper Dangaard Brouer Committed by David S. Miller

mm: add dma_addr_t to struct page

The page_pool API is using page->private to store DMA addresses.
As pointed out by David Miller we can't use that on 32-bit architectures
with 64-bit DMA

This patch adds a new dma_addr_t struct to allow storing DMA addresses
Signed-off-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: default avatarIlias Apalodimas <ilias.apalodimas@linaro.org>
Acked-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent fb14b096
...@@ -95,6 +95,13 @@ struct page { ...@@ -95,6 +95,13 @@ struct page {
*/ */
unsigned long private; unsigned long private;
}; };
struct { /* page_pool used by netstack */
/**
* @dma_addr: might require a 64-bit value even on
* 32-bit architectures.
*/
dma_addr_t dma_addr;
};
struct { /* slab, slob and slub */ struct { /* slab, slob and slub */
union { union {
struct list_head slab_list; /* uses lru */ struct list_head slab_list; /* uses lru */
......
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