| To: | David Chinner <dgc@xxxxxxx> |
|---|---|
| Subject: | Re: [PATCH] Freeze bdevs when freezing processes. |
| From: | Nigel Cunningham <ncunningham@xxxxxxxxxxxxx> |
| Date: | Thu, 26 Oct 2006 19:18:57 +1000 |
| Cc: | "Rafael J. Wysocki" <rjw@xxxxxxx>, Pavel Machek <pavel@xxxxxx>, Andrew Morton <akpm@xxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx |
| In-reply-to: | <20061026085700.GI8394166@melbourne.sgi.com> |
| References: | <1161576735.3466.7.camel@nigel.suspend2.net> <200610251432.41958.rjw@sisk.pl> <1161782620.3638.0.camel@nigel.suspend2.net> <200610252105.56862.rjw@sisk.pl> <20061026073022.GG8394166@melbourne.sgi.com> <1161850709.17293.23.camel@nigel.suspend2.net> <20061026085700.GI8394166@melbourne.sgi.com> |
| Sender: | xfs-bounce@xxxxxxxxxxx |
Hi. On Thu, 2006-10-26 at 18:57 +1000, David Chinner wrote: > I didn't think we've ever done that - periodic or delayed operations > are passed off to the kernel threads to execute. A stack trace > (if you still have it) would be really help here. I don't, but I know how to get it again. Will give it a go shortly. > Hmmm - we have a couple of per-cpu work queues as well that are > used on I/O completion and that can, in some circumstances, > trigger new transactions. If we are only flush metadata, then > I don't think that any more I/o will be issued, but I could be > wrong (maze of twisty passages). I can understand that. I'm trying to learn Xgl programming at the mo :) Nigel |
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