On Mon, Dec 15, 2014 at 12:26 AM, Omar Sandoval <osandov@xxxxxxxxxxx> wrote: > The generic callers of direct_IO lock i_mutex before doing a write. NFS > doesn't use the generic write code, so it doesn't follow this > convention. This is now a problem because the interface introduced for > swap-over-NFS calls direct_IO for a write without holding i_mutex, but > other implementations of direct_IO will expect to have it locked. I really don't care much about swap-over-NFS performance; that's a niche usage at best. I _do_ care about O_DIRECT performance, and the ability to run multiple WRITE calls in parallel. IOW: Patch NACKed... Please find another solution. Trond -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>