rdma_dereg_mr3
Deregisters a registered memory region.
Usage
#include <rdma/rdma_verbs.h>
int rdma_dereg_mr (struct ibv_mr *mr);
Arguments
- mr
-
A reference to a registered memory buffer.
Overview
Deregisters a memory buffer that had been registered for RDMA or message operations. A user should call rdma_dereg_mr for all registered memory associated with an rdma_cm_id before destroying the rdma_cm_id.
Return value
Returns 0 on success, or -1 on error. If an error occurs, errno will be set to indicate the failure reason.
Notes
All memory registered with an rdma_cm_id is associated with the protection domain associated with the id. Users must deregister all registered memory before the protection domain can be destroyed.
Releases
8 releases since Debian 7 (Wheezy); the text changed 1 time.