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iscsi: fix the pdu memory leak issue

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It is pdu memory leak issue. The reason is that
we did not correctly handle the read pdu task.

Change-Id: I719c87fe7825537b9c77f5ee7e0816671de4c051
Signed-off-by: Ziye Yang <ziye.yang@intel.com>
This commit is contained in:
Ziye Yang 2016-09-13 14:34:09 +08:00 committed by Daniel Verkamp
parent 9c04f2f1f9
commit 7c5ed138b4
1 changed files with 14 additions and 22 deletions
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34
lib/iscsi/conn.c
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@ -810,14 +810,9 @@ process_read_task_completion(struct spdk_iscsi_conn *conn,
bool flag = false;
primary = spdk_iscsi_task_get_primary(task);
if (task != primary) {
if (task->scsi.offset == primary->scsi.bytes_completed) {
primary->scsi.bytes_completed += task->scsi.length;
spdk_iscsi_task_response(conn, task);
spdk_iscsi_task_put(task);
process_completed_read_subtask_list(conn, primary);
return;
}
if ((task != primary) &&
(task->scsi.offset != primary->scsi.bytes_completed)) {
TAILQ_FOREACH(tmp, &primary->scsi.subtask_list, scsi_link) {
if (task->scsi.offset < tmp->offset) {
TAILQ_INSERT_BEFORE(tmp, &task->scsi, scsi_link);
@ -828,11 +823,13 @@ process_read_task_completion(struct spdk_iscsi_conn *conn,
if (!flag) {
TAILQ_INSERT_TAIL(&primary->scsi.subtask_list, &task->scsi, scsi_link);
}
} else {
primary->scsi.bytes_completed += primary->scsi.length;
spdk_iscsi_task_response(conn, primary);
process_completed_read_subtask_list(conn, primary);
return;
}
primary->scsi.bytes_completed += task->scsi.length;
spdk_iscsi_task_response(conn, task);
spdk_iscsi_task_put(task);
process_completed_read_subtask_list(conn, primary);
}
void process_task_completion(spdk_event_t event)
@ -1033,19 +1030,14 @@ spdk_iscsi_conn_flush_pdus_internal(struct spdk_iscsi_conn *conn)
tailq);
} else {
if (pdu->task) {
if (pdu->bhs.opcode == ISCSI_OP_SCSI_DATAIN) {
struct spdk_iscsi_task *primary;
uint64_t offset = pdu->task->scsi.offset;
spdk_iscsi_task_put(pdu->task);
primary = spdk_iscsi_task_get_primary(pdu->task);
if (pdu->task->scsi.offset > 0) {
if ((pdu->bhs.opcode == ISCSI_OP_SCSI_DATAIN) &&
(offset > 0)) {
conn->data_in_cnt--;
}
if (pdu->bhs.flags & ISCSI_DATAIN_STATUS) {
spdk_iscsi_task_put(primary);
}
spdk_iscsi_conn_handle_queued_datain(conn);
}
spdk_iscsi_task_put(pdu->task);
}
spdk_put_pdu(pdu);
}