Re: writeout stalls in current -git

[David Chinner]

On Wed, Nov 07, 2007 at 08:15:06AM +0100, Torsten Kaiser wrote:
> On 11/7/07, David Chinner <dgc@xxxxxxx> wrote:
> > Ok, so it's not synchronous writes that we are doing - we're just
> > submitting bio's tagged as WRITE_SYNC to get the I/O issued quickly.
> > The "synchronous" nature appears to be coming from higher level
> > locking when reclaiming inodes (on the flush lock). It appears that
> > inode write clustering is failing completely so we are writing the
> > same block multiple times i.e. once for each inode in the cluster we
> > have to write.
> 
> Works for me. The only remaining stalls are sub second and look
> completely valid, considering the amount of files being removed.
....
> Tested-by: Torsten Kaiser <just.for.lkml@xxxxxxxxxxxxxx>

Great - thanks for reporting the problem and testing the fix.

Cheers,

Dave.
-- 
Dave Chinner
Principal Engineer
SGI Australian Software Group
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