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authorChristoph Hellwig <hch@lst.de>2015-12-23 19:12:54 +0100
committerDoug Ledford <dledford@redhat.com>2015-12-23 14:29:06 -0500
commitab67ed8de0250e9ad7956ff4d98c3c98858b6c3c (patch)
tree57db1670b47a399a42277568be2f45e4b886fb74 /drivers/infiniband
parentIB: remove the struct ib_phys_buf definition (diff)
downloadlinux-dev-ab67ed8de0250e9ad7956ff4d98c3c98858b6c3c.tar.xz
linux-dev-ab67ed8de0250e9ad7956ff4d98c3c98858b6c3c.zip
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.c6
-rw-r--r--drivers/infiniband/core/verbs.c8
-rw-r--r--drivers/infiniband/hw/cxgb3/iwch_provider.c3
-rw-r--r--drivers/infiniband/hw/cxgb4/mem.c3
4 files changed, 1 insertions, 19 deletions
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 5428ebee096f..0a84182d277f 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 c5e0f07a7f82..072b94df870a 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 6743e9ddb088..2734820d291b 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 1eb833aa0eb1..7849890c4781 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;