The rsm_create_localmemory_handle() and rsm_free_localmemory_handle() functions are supporting functions for rsm_memseg_import_putv(3RSM)
and rsm_memseg_import_getv(3RSM).
The rsm_create_localmemory_handle() function creates a local memory handle to be used in the I/O vector component of a scatter-gather list of subsequent rsm_memseg_import_putv() and rsm_memseg_import_getv() calls. The handle
argument specifies the controller handle obtained from rsm_get_controller(3RSM). The l_handle argument is a pointer to the location for the function to
return the local memory handle. The local_vaddr argument specifies the local virtual address; it should be aligned at a page boundary. The length argument specifies the length of memory spanned by the handle.
The rsm_free_localmemory_handle() function unlocks the memory range for the local handle specified by l_handle and releases the associated system resources. The handle argument specifies the controller handle. All handles created
by a process are freed when the process exits, but the process should call rsm_free_localmemory_handle() as soon as possible to free the system resources.
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