On Wed, Jul 27, 2011 at 03:56:19AM -0700, Anand Avati wrote: > FUSE currently disallows O_DIRECT flag in open(). It is tricky dealing with > setting/unsetting of O_DIRECT flag on an open file. There are applications > (primarily VMs and databases) which open files with O_DIRECT flag. These > applications do not work on FUSE due to this limitation. > > The approach with this patch is to permit opens with O_DIRECT, but instead > disable setting/unsetting of the O_DIRECT flag no matter how the file was > opened. This limitation is for more practical than disallowing O_DIRECT > altogether. But it's also entirely incorrect. Fix your userspace to have a proper fallback if O_DIRECT opens fail. It's a feature only supported by a few filesystems, and very few operating systems. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
