From: Mike Christie Date: Wed, 28 Feb 2007 23:32:18 +0000 (-0600) Subject: [SCSI] iscsi transport: use atomic for session_nr allocations X-Git-Tag: v2.6.22-rc1~1015^2~77 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=41be14442213b6dbeea3cba2ed18a2923666278c;p=linux-2.6 [SCSI] iscsi transport: use atomic for session_nr allocations qla4xxx and iscsi_tcp or iser could be creating sessions at the same time, so make session_nr id allocation atomic. Signed-off-by: Mike Christie Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c index ce0d14af33..ff05c84479 100644 --- a/drivers/scsi/scsi_transport_iscsi.c +++ b/drivers/scsi/scsi_transport_iscsi.c @@ -49,7 +49,7 @@ struct iscsi_internal { struct class_device_attribute *session_attrs[ISCSI_SESSION_ATTRS + 1]; }; -static int iscsi_session_nr; /* sysfs session id for next new session */ +static atomic_t iscsi_session_nr; /* sysfs session id for next new session */ /* * list of registered transports and lock that must @@ -300,7 +300,7 @@ int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id) int err; ihost = shost->shost_data; - session->sid = iscsi_session_nr++; + session->sid = atomic_add_return(1, &iscsi_session_nr); session->target_id = target_id; snprintf(session->dev.bus_id, BUS_ID_SIZE, "session%u", @@ -1419,6 +1419,8 @@ static __init int iscsi_transport_init(void) printk(KERN_INFO "Loading iSCSI transport class v%s.\n", ISCSI_TRANSPORT_VERSION); + atomic_set(&iscsi_session_nr, 0); + err = class_register(&iscsi_transport_class); if (err) return err;