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SubjectRe: [Bug #14141] order 2 page allocation failures in iwlagn
On Mon, Oct 19, 2009 at 01:01:15PM -0400, Christoph Hellwig wrote:
> On Tue, Oct 20, 2009 at 01:18:15AM +0900, Chris Mason wrote:
> > Waiting doesn't make it synchronous from the elevator point of view ;)
> > If you're using WB_SYNC_NONE, it's a async write. WB_SYNC_ALL makes it
> > a sync write. I only see WB_SYNC_NONE in vmscan.c, so we should be
> > using the async congestion wait. (the exception is xfs which always
> > does async writes).
> That's only because those people who did the global sweep did not bother
> to convert it or even tell the list about it. I have a patch in my
> QA queue to change it..

Yes, we just didn't realize XFS was missed. Sorry. I wasn't trying to
blame xfs for being behind, just mentioning that we've got about 10
different variables here and I'm having a hard time figuring out which
ones to push on.


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