diff options
| author | Christoph Hellwig <hch@lst.de> | 2015-12-23 18:12:54 (GMT) |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2015-12-23 19:29:06 (GMT) |
| commit | ab67ed8de0250e9ad7956ff4d98c3c98858b6c3c (patch) | |
| tree | 57db1670b47a399a42277568be2f45e4b886fb74 /drivers/infiniband | |
| parent | 7cf9ff643b7f709173ca6ff6376fdff5b8d16124 (diff) | |
| download | linux-ab67ed8de0250e9ad7956ff4d98c3c98858b6c3c.tar.xz | |
IB: remove the write-only usecnt field from struct ib_mr
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@sandisk.com>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/core/uverbs_cmd.c | 6 | ||||
| -rw-r--r-- | drivers/infiniband/core/verbs.c | 8 | ||||
| -rw-r--r-- | drivers/infiniband/hw/cxgb3/iwch_provider.c | 3 | ||||
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/mem.c | 3 |
4 files changed, 1 insertions, 19 deletions
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index 5428ebe..0a84182d 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -993,7 +993,6 @@ ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, mr->pd = pd; mr->uobject = uobj; atomic_inc(&pd->usecnt); - atomic_set(&mr->usecnt, 0); uobj->object = mr; ret = idr_add_uobj(&ib_uverbs_mr_idr, uobj); @@ -1091,11 +1090,6 @@ ssize_t ib_uverbs_rereg_mr(struct ib_uverbs_file *file, } } - if (atomic_read(&mr->usecnt)) { - ret = -EBUSY; - goto put_uobj_pd; - } - old_pd = mr->pd; ret = mr->device->rereg_user_mr(mr, cmd.flags, cmd.start, cmd.length, cmd.hca_va, diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c index c5e0f07..072b94d 100644 --- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -1345,7 +1345,6 @@ struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags) mr->pd = pd; mr->uobject = NULL; atomic_inc(&pd->usecnt); - atomic_set(&mr->usecnt, 0); } return mr; @@ -1354,13 +1353,9 @@ EXPORT_SYMBOL(ib_get_dma_mr); int ib_dereg_mr(struct ib_mr *mr) { - struct ib_pd *pd; + struct ib_pd *pd = mr->pd; int ret; - if (atomic_read(&mr->usecnt)) - return -EBUSY; - - pd = mr->pd; ret = mr->device->dereg_mr(mr); if (!ret) atomic_dec(&pd->usecnt); @@ -1396,7 +1391,6 @@ struct ib_mr *ib_alloc_mr(struct ib_pd *pd, mr->pd = pd; mr->uobject = NULL; atomic_inc(&pd->usecnt); - atomic_set(&mr->usecnt, 0); } return mr; diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c index 6743e9d..2734820 100644 --- a/drivers/infiniband/hw/cxgb3/iwch_provider.c +++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c @@ -458,9 +458,6 @@ static int iwch_dereg_mr(struct ib_mr *ib_mr) u32 mmid; PDBG("%s ib_mr %p\n", __func__, ib_mr); - /* There can be no memory windows */ - if (atomic_read(&ib_mr->usecnt)) - return -EINVAL; mhp = to_iwch_mr(ib_mr); kfree(mhp->pages); diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c index 1eb833a..7849890 100644 --- a/drivers/infiniband/hw/cxgb4/mem.c +++ b/drivers/infiniband/hw/cxgb4/mem.c @@ -704,9 +704,6 @@ int c4iw_dereg_mr(struct ib_mr *ib_mr) u32 mmid; PDBG("%s ib_mr %p\n", __func__, ib_mr); - /* There can be no memory windows */ - if (atomic_read(&ib_mr->usecnt)) - return -EINVAL; mhp = to_c4iw_mr(ib_mr); rhp = mhp->rhp; |