lkml.org 
[lkml]   [2014]   [Sep]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/7] Prepare for adding a new readv/writev with user flags.
On Mon, Sep 15, 2014 at 09:28:28PM +0100, Al Viro wrote:
> On Mon, Sep 15, 2014 at 04:20:17PM -0400, Milosz Tanski wrote:
> > Plumbing the flags argument through the vfs code so they can be passed down to
> > __generic_file_(read/write)_iter function that do the acctual work.
>
> NAK. Put these flags into iocb, it'll be less noisy that way.

Fine with me. My initial prototype had it in the iov_iter type field
which is another possibility.

But if we get rid of the explicit flags field and make it more invisible
I'd really like to add a features field struct file_operations where
instances can advertize that they support it (and other things like
actual AIO support in the future) so that we won't have a situation
like with AIO where we can submit I/O but it might actually still block
anyway because lots of operations don't support it.


\
 
 \ /
  Last update: 2014-09-16 00:01    [W:0.095 / U:0.212 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site