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| author |   Bart Van Assche <bart.vanassche@sandisk.com> | 2016-05-12 10:49:15 -0700 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2016-05-13 13:37:57 -0400 |
| commit | 9aa8b3217ed3c13d4e3496020b140da0e6f49a08 (patch) | |
| tree | 4bf6441f7c72dcd7f07c15091e1212512446e680 /drivers/infiniband/ulp/srp | |
| parent | IB/srp: Fix srp_create_target() error handling (diff) | |
| download | linux-dev-9aa8b3217ed3c13d4e3496020b140da0e6f49a08.tar.xz linux-dev-9aa8b3217ed3c13d4e3496020b140da0e6f49a08.zip | |
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/ulp/srp')
| -rw-r--r-- | drivers/infiniband/ulp/srp/ib_srp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index 6b9c5688e26a..54f4c1310897 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -1329,7 +1329,7 @@ static int srp_map_finish_fr(struct srp_map_state *state, rkey = ib_inc_rkey(desc->mr->rkey); ib_update_fast_reg_key(desc->mr, rkey); - n = ib_map_mr_sg(desc->mr, state->sg, sg_nents, 0, dev->mr_page_size); + n = ib_map_mr_sg(desc->mr, state->sg, sg_nents, NULL, dev->mr_page_size); if (unlikely(n < 0)) { srp_fr_pool_put(ch->fr_pool, &desc, 1); pr_debug("%s: ib_map_mr_sg(%d) returned %d.\n", |