RDS/IB: Always use PAGE_SIZE for FMR page size
While FMRs allow significant flexibility in what size of pages they can use,
we really just want FMR pages to match CPU page size. Roland says we can
count on this always being supported, so this simplifies things.
Signed-off-by: Andy Grover <andy.grover@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c
index 81033af..ef3ab5b 100644
--- a/net/rds/ib_rdma.c
+++ b/net/rds/ib_rdma.c
@@ -211,7 +211,7 @@
pool->fmr_attr.max_pages = fmr_message_size;
pool->fmr_attr.max_maps = rds_ibdev->fmr_max_remaps;
- pool->fmr_attr.page_shift = rds_ibdev->fmr_page_shift;
+ pool->fmr_attr.page_shift = PAGE_SHIFT;
pool->max_free_pinned = rds_ibdev->max_fmrs * fmr_message_size / 4;
/* We never allow more than max_items MRs to be allocated.
@@ -349,13 +349,13 @@
unsigned int dma_len = ib_sg_dma_len(dev, &scat[i]);
u64 dma_addr = ib_sg_dma_address(dev, &scat[i]);
- if (dma_addr & ~rds_ibdev->fmr_page_mask) {
+ if (dma_addr & ~PAGE_MASK) {
if (i > 0)
return -EINVAL;
else
++page_cnt;
}
- if ((dma_addr + dma_len) & ~rds_ibdev->fmr_page_mask) {
+ if ((dma_addr + dma_len) & ~PAGE_MASK) {
if (i < sg_dma_len - 1)
return -EINVAL;
else
@@ -365,7 +365,7 @@
len += dma_len;
}
- page_cnt += len >> rds_ibdev->fmr_page_shift;
+ page_cnt += len >> PAGE_SHIFT;
if (page_cnt > fmr_message_size)
return -EINVAL;
@@ -378,9 +378,9 @@
unsigned int dma_len = ib_sg_dma_len(dev, &scat[i]);
u64 dma_addr = ib_sg_dma_address(dev, &scat[i]);
- for (j = 0; j < dma_len; j += rds_ibdev->fmr_page_size)
+ for (j = 0; j < dma_len; j += PAGE_SIZE)
dma_pages[page_cnt++] =
- (dma_addr & rds_ibdev->fmr_page_mask) + j;
+ (dma_addr & PAGE_MASK) + j;
}
ret = ib_map_phys_fmr(ibmr->fmr,