2014-07-18 3:31 GMT+09:00 Jeff Moyer <jmoyer@xxxxxxxxxx>: > Akinobu Mita <akinobu.mita@xxxxxxxxx> writes: > >> Sequential read from a block device is expected to be equal or faster >> than from the file on a filesystem. But it is not correct due to the >> lack of effective readpages() in the address space operations for >> block device. > > Ah, a trip down memory lane. ;-) Here's a thread showing issues with > the last time this was proposed (by me, incidentally): > > https://lkml.org/lkml/2009/6/2/480 > > At the very least, we need to see numbers on a real device, and see it > booted on something with >4k page size before taking this back in. Thanks for the information. First, I'll try to reproduce the >4k page size issue with qemu with the architecture which can support 64k page. -- 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
