> On 25 November 2016 at 06:26 Theodore Ts'o <tytso@xxxxxxx> wrote: > > > On Thu, Nov 24, 2016 at 08:47:41PM +0100, Fabian Frederick wrote: > > data=journal mount option should disable O_DIRECT access > > (See Documentation/filesystems/ext4.txt) but open operations > > using O_CREAT|O_RDWR|O_DIRECT|O_SYNC have no warning in return and file is > > being > > created. This patch adds vfs super_operations compatibility flag function > > returning -EPERM in such a case. > > > > Signed-off-by: Fabian Frederick <fabf@xxxxxxxxx> > > The general practice by most file systems in Linux (for better or for > worse) is to silently fall back to buffered I/O instead of failing the > O_DIRECT open. Feel free to try to convince linux-fsdevel otherwise, > but that is the general and historical consensus of Linux file system > developers. > > Cheers, Thanks a lot Ted, I'll have a closer look at vfs/ext4 documentation and add some details if required. Regards, Fabian > > - Ted -- 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
