diff options
| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2016-05-12 20:49:15 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-05-13 20:37:57 +0300 |
| commit | 9aa8b3217ed3c13d4e3496020b140da0e6f49a08 (patch) | |
| tree | 4bf6441f7c72dcd7f07c15091e1212512446e680 /drivers/infiniband/core/rw.c | |
| parent | f83b2561a6d4ff12959660ad597580097b744941 (diff) | |
| download | linux-9aa8b3217ed3c13d4e3496020b140da0e6f49a08.tar.xz | |
IB/core: Enhance ib_map_mr_sg()
The SRP initiator allows to set max_sectors to a value that exceeds
the largest amount of data that can be mapped at once with an mlx4
HCA using fast registration and a page size of 4 KB. Hence modify
ib_map_mr_sg() such that it can map partial sg-elements. If an
sg-element has been mapped partially, let the caller know
which fraction has been mapped by adjusting *sg_offset.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Tested-by: Laurence Oberman <loberman@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/core/rw.c')
| -rw-r--r-- | drivers/infiniband/core/rw.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/core/rw.c b/drivers/infiniband/core/rw.c index 6fc50bf79afe..1eb9b1294a63 100644 --- a/drivers/infiniband/core/rw.c +++ b/drivers/infiniband/core/rw.c @@ -92,7 +92,7 @@ static int rdma_rw_init_one_mr(struct ib_qp *qp, u8 port_num, reg->inv_wr.next = NULL; } - ret = ib_map_mr_sg(reg->mr, sg, nents, offset, PAGE_SIZE); + ret = ib_map_mr_sg(reg->mr, sg, nents, &offset, PAGE_SIZE); if (ret < nents) { ib_mr_pool_put(qp, &qp->rdma_mrs, reg->mr); return -EINVAL; |