From: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
- Create multipath capable scsi host
Signed-off-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
---
drivers/scsi/hosts.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index e021f1106bea..3cedb2a9af7b 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -39,6 +39,7 @@
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_multipath.h>
#include "scsi_priv.h"
#include "scsi_logging.h"
@@ -394,6 +395,14 @@ struct Scsi_Host *scsi_host_alloc(const struct scsi_host_template *sht, int priv
struct Scsi_Host *shost;
int index;
+#ifdef CONFIG_SCSI_MULTIPATH
+ struct scsi_mpath *mpath_dev;
+ size_t size = sizeof(*mpath_dev);
+
+ size += num_possible_nodes() * sizeof(struct mpath_dev *);
+ privsize = privsize + size;
+#endif
+
shost = kzalloc(sizeof(struct Scsi_Host) + privsize, GFP_KERNEL);
if (!shost)
return NULL;
@@ -409,6 +418,9 @@ struct Scsi_Host *scsi_host_alloc(const struct scsi_host_template *sht, int priv
init_waitqueue_head(&shost->host_wait);
mutex_init(&shost->scan_mutex);
+#ifdef CONFIG_SCSI_MULTIPATH
+ INIT_LIST_HEAD(&shost->mpath_sdev);
+#endif
index = ida_alloc(&host_index_ida, GFP_KERNEL);
if (index < 0) {
kfree(shost);
--
2.41.0.rc2
