On Tue, 2010-02-02 at 13:36 +0000, Ming Lei wrote: > 2010/2/2 Catalin Marinas <catalin.marinas@xxxxxxx>: > > > In the iSCSI case, does the HCD driver write directly to a page cache > > page? Or it just fills in network packets that are copied to page cache > > pages by the iSCSI code (sorry, I'm not familiar with this part of the > > kernel). If the latter, the cache flushing in the HCD driver would not > > help and it needs to be done in the iSCSI code. > > So we should flush dcache page in the place where the user mapped > page is copied to, instead of low level driver which does not do such > thing always. Or both if you can't be sure whether the driver copies directly to a page cache page. -- Catalin -- 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
