Re: [RFC] ext4: Don't send extra barrier during fsync if there areno dirty pages.

From: Ted Ts'o
Date: Wed Aug 04 2010 - 19:32:23 EST

On Tue, Aug 03, 2010 at 04:24:49PM +0300, Avi Kivity wrote:
> On 06/30/2010 03:48 PM, tytso@xxxxxxx wrote:
> >
> >I wonder if it's worthwhile to think about a new system call which
> >allows users to provide an array of fd's which are collectively should
> >be fsync'ed out at the same time. Otherwise, we end up issuing
> >multiple barrier operations in cases where the application needs to
> >do:
> >
> > fsync(control_fd);
> > fsync(data_fd);
> >
> The system call exists, it's called io_submit().

Um, not the same thing at all.

- Ted
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