struct mm_struct *owning_mm;
size_t length;
unsigned long address;
- int page_shift;
u32 writable : 1;
u32 is_odp : 1;
struct work_struct work;
/* Returns the offset of the umem start relative to the first page. */
static inline int ib_umem_offset(struct ib_umem *umem)
{
- return umem->address & (BIT(umem->page_shift) - 1);
-}
-
-/* Returns the first page of an ODP umem. */
-static inline unsigned long ib_umem_start(struct ib_umem *umem)
-{
- return umem->address - ib_umem_offset(umem);
-}
-
-/* Returns the address of the page after the last one of an ODP umem. */
-static inline unsigned long ib_umem_end(struct ib_umem *umem)
-{
- return ALIGN(umem->address + umem->length, BIT(umem->page_shift));
+ return umem->address & ~PAGE_MASK;
}
static inline size_t ib_umem_num_pages(struct ib_umem *umem)
{
- return (ib_umem_end(umem) - ib_umem_start(umem)) >> umem->page_shift;
+ return (ALIGN(umem->address + umem->length, PAGE_SIZE) -
+ ALIGN_DOWN(umem->address, PAGE_SIZE)) >>
+ PAGE_SHIFT;
}
#ifdef CONFIG_INFINIBAND_USER_MEM