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SubjectRe: [PATCH 2/3] Fix fsync livelock
On Mon, 6 Oct 2008 09:00:14 -0400 (EDT)
Mikulas Patocka <mpatocka@redhat.com> wrote:

> On Sun, 5 Oct 2008, Arjan van de Ven wrote:
>
> > On Sun, 5 Oct 2008 23:30:51 -0400 (EDT
> > > The point is that many fsync()s may run in parallel and you have
> > > just one inode and just one chain. And if you add two-word
> > > list_head to a page, to link it on this list, many developers
> > > will hate it for increasing its size.
> >
> > why to a page?
> > a list head in the inode and chain up the bios....
>
> And if you want to wait for a bio submitted by a different process?
> There's no way you can find the bio from the page.

the point is that the kernel would always chain it to the inode,
independent of who or when it is submitted


--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org


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