rpma_flush - initiate the flush operation
#include <librpma.h>
struct rpma_conn;
struct rpma_mr_remote;
enum rpma_flush_type {
RPMA_FLUSH_TYPE_PERSISTENT,
RPMA_FLUSH_TYPE_VISIBILITY,
};
int rpma_flush(struct rpma_conn *conn,
struct rpma_mr_remote *dst, size_t dst_offset,
size_t len, enum rpma_flush_type type, int flags,
const void *op_context);
rpma_flush() initiates the flush operation (finalizing a transfer of data to the remote memory). Possible types of rpma_flush() operation:
RPMA_FLUSH_TYPE_PERSISTENT - flush data down to the persistent domain
RPMA_FLUSH_TYPE_VISIBILITY - flush data deep enough to make it visible on the remote node
The attribute flags set the completion notification indicator:
RPMA_F_COMPLETION_ON_ERROR - generate the completion on error
RPMA_F_COMPLETION_ALWAYS - generate the completion regardless of result of the operation.
op_context is returned in the wr_id field of the completion (struct ibv_wc).
The rpma_flush() function returns 0 on success or a negative error code on failure.
rpma_flush() can fail with the following errors:
RPMA_E_INVAL - conn or dst is NULL
RPMA_E_INVAL - unknown type value
RPMA_E_INVAL - flags are not set
RPMA_E_PROVIDER - ibv_post_send(3) failed
RPMA_E_NOSUPP - type is RPMA_FLUSH_TYPE_PERSISTENT and the direct write to pmem is not supported
rpma_conn_req_connect(3), rpma_mr_remote_from_descriptor(3), librpma(7) and https://pmem.io/rpma/
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