On Sat, May 07, 2022 at 12:10:33PM +0800, Liang Chen wrote: > From: Liang Chen <liangchen.linux@xxxxxxxxx> > > As pointed out in commit 332391a, mixing buffered reads and asynchronous > direct writes risks ending up with a situation where stale data is left > in page cache while new data is already written to disk. The same problem > hits block dev fs too. A similar approach needs to be taken here. What is the real issue here? If you mix direct and buffered I/O you generally get what you pay for. Even more so on block devices that don't even follow Posix file system semantics.
