From oliver@neukum.org Fri Apr 20 11:51:02 2007 From: Oliver Neukum Date: Fri, 20 Apr 2007 20:50:48 +0200 Subject: usbfs micro optimitation To: gregkh@suse.de, linux-usb-devel@lists.sourceforge.net Message-ID: <200704202050.49246.oliver@neukum.org> Content-Disposition: inline the memory barrier is needed only with smp. Signed-off-by: Oliver Neukum Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/devio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -580,7 +580,7 @@ static int usbdev_open(struct inode *ino ps->disccontext = NULL; ps->ifclaimed = 0; security_task_getsecid(current, &ps->secid); - wmb(); + smp_wmb(); list_add_tail(&ps->list, &dev->filelist); file->private_data = ps; out: