path: root/drivers/infiniband/core/uverbs_std_types_dm.c
diff options
authorLeon Romanovsky <leonro@nvidia.com>2020-11-04 16:45:55 +0200
committerJason Gunthorpe <jgg@nvidia.com>2020-11-12 12:32:17 -0400
commitefa968ee20248ebf8da8542f21d5d2811e86392f (patch)
tree2f5c6167c36dd32095bc947415eaf89c93f2a973 /drivers/infiniband/core/uverbs_std_types_dm.c
parentIB/isert: Do not excplicitly check == false for bool (diff)
RDMA/core: Postpone uobject cleanup on failure till FD close
Remove the ib_is_destroyable_retryable() concept. The idea here was to allow the drivers to forcibly clean the HW object even if they otherwise didn't want to (eg because of usecnt). This was an attempt to clean up in a world where drivers were not allowed to fail HW object destruction. Now that we are going back to allowing HW objects to fail destroy this doesn't make sense. Instead if a uobject's HW object can't be destroyed it is left on the uobject list and it is up to uverbs_destroy_ufile_hw() to clean it. Multiple passes over the uobject list allow hidden dependencies to be resolved. If that fails the HW driver is broken, throw a WARN_ON and leak the HW object memory. All the other tricky failure paths (eg on creation error unwind) have already been updated to this new model. Link: https://lore.kernel.org/r/20201104144556.3809085-2-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/core/uverbs_std_types_dm.c')
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/infiniband/core/uverbs_std_types_dm.c b/drivers/infiniband/core/uverbs_std_types_dm.c
index d5a1de33c2c9..98c522cf86d6 100644
--- a/drivers/infiniband/core/uverbs_std_types_dm.c
+++ b/drivers/infiniband/core/uverbs_std_types_dm.c
@@ -39,11 +39,9 @@ static int uverbs_free_dm(struct ib_uobject *uobject,
struct uverbs_attr_bundle *attrs)
struct ib_dm *dm = uobject->object;
- int ret;
- ret = ib_destroy_usecnt(&dm->usecnt, why, uobject);
- if (ret)
- return ret;
+ if (atomic_read(&dm->usecnt))
+ return -EBUSY;
return dm->device->ops.dealloc_dm(dm, attrs);