Re: unreliable sync? [Re: ext2 fs not properly updated upon dismount.]

Rik van Riel (H.H.vanRiel@phys.uu.nl)
Thu, 18 Jun 1998 20:42:11 +0200 (CEST)

On Thu, 18 Jun 1998, Richard B. Johnson wrote:
> On Thu, 18 Jun 1998, Pavel Machek wrote:
> >
> > My idea: Last time I checked, linux was not guaranteeing that all data
> > are on disk after sync. Sync just means that data are scheduled in que
> > somewhere. So you have to sleep 1 after sync, for it to work.
>
> I will do it.

>From linux/fs/buffer.c (line 160 for v2.1.101):

static in sync_buffers(kdev_t dev, int wait)
{
...
/* One pass for no-wait, three for wait:
* 0) write out all dirty, unlocked buffers;
* 1) write out all dirty buffers, waiting if locked;
* 2) wait for completion by waiting for all buffers to unlock.
*/
...
}

Looks pretty clear to me...

Rik.
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