Re: 2.4.19pre5aa1 and splitted vm-33

[Christoph Hellwig]

On Sun, Mar 31, 2002 at 04:48:15PM +0200, Andrea Arcangeli wrote:
> Only in 2.4.19pre5aa1: 00_o_direct-open-check-1
> 
> 	Move the check for O_DIRECT support into the open(2) syscall. Make
> 	sense, also the xine folks asked for that feature to cleanup
> 	some userspace. Patch from Chuck Lever.

This breaks XFS O_DIRECT handling, which is not implemented through ->direct_IO.
For the open case putting the check into generic_file_open sounds good to me,
but I have no idea on how to handle the fcntl case - which btw already allocates
kiobufs even if XFS doesn't need them..