140 	struct mutex f_mutex;	/* protect against changes in this fd */  member
643 	mutex_lock(&sfp->f_mutex);  in sg_write()
652 	mutex_unlock(&sfp->f_mutex);  in sg_write()
1028 		mutex_lock(&sfp->f_mutex);  in sg_ioctl_common()
1032 				mutex_unlock(&sfp->f_mutex);  in sg_ioctl_common()
1039 		mutex_unlock(&sfp->f_mutex);  in sg_ioctl_common()
1295 	mutex_lock(&sfp->f_mutex);  in sg_mmap()
1314 	mutex_unlock(&sfp->f_mutex);  in sg_mmap()
1783 		mutex_lock(&sfp->f_mutex);  in sg_start_req()
1792 			mutex_unlock(&sfp->f_mutex);  in sg_start_req()
1797 				mutex_unlock(&sfp->f_mutex);  in sg_start_req()
1801 		mutex_unlock(&sfp->f_mutex);  in sg_start_req()
2193 	mutex_init(&sfp->f_mutex);  in sg_add_sfp()