On Mon, Jul 04, 2011 at 06:13:49PM +0530, Amit Nagal wrote: > Hi , > > if a application is doing read /write I/O with a usb device , in 2 > different threads in userspace , What type of USB device? > and at usb disconnect event , read thread returns with error and > application calls close() subsequently without waiting for write > thread to finish . > > Do the VFS upper layers maintain locks that take care that until > both read and write methods in usb driver donot finish and return with > error in kernel space > > close will pend and usb driver release method will not be called ? No, close will succeed, and then all will be cleaned up properly. Try it yourself and see :) greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
