Messages in this thread | | | Date | Mon, 15 Oct 2007 10:31:41 +0200 | From | Christoph Hellwig <> | Subject | Re: [xfs-masters] Re: Interaction between Xen and XFS: stray RW mappings |
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On Mon, Oct 15, 2007 at 02:25:46PM +1000, David Chinner wrote: > > Hm, well I saw the problem with a filesystem made with mkfs.xfs with no > > options, so there must be at least *some* vmapping going on there. > > Sorry - I should have been more precise - vmap should never be used in > performance critical paths on default configs. Log recovery will > trigger vmap/vunmap usage, so this is probably what you are seeing.
The iclogs are also vmapped, but they aren't unmapped until unmount so this optimizations doesn't matter either.
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