On Wed, Jun 11, 2025 at 11:44:29AM -0400, Jeff Layton wrote: > XFS, for instance, takes the i_rwsem shared around dio writes and > exclusive around buffered, so they should exclude each other. If we did > all the buffered writes as RWF_SYNC, would that prevent corruption? The big issue is memory mapped I/O, which doesn't take any locks. I guess you could declare using a nfs exported file locally as a bad idea, but I know plenty of setups doing it.
