On Wed, Feb 08, 2012 at 07:01:44PM +0800, Wu Fengguang wrote: > Buffered write(2) is not directly tied to IO, so it's not suitable to > handle plug in generic_file_aio_write(). But generic_sync_write() does issue IO for O_SYNC writes, so unless there is plugging at a lower layer in the writeback code then it appears to me that plugging is still necessary (at least inside the sync branch).... Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html