On Sun, Feb 25, 2007 at 04:06:57AM -0800, Andrew Morton wrote:
>
> What an unpleasing patchset. I really really hope we really have a bug in
> there, and that all this crap isn't pointless uglification.
It's the same bug for file pages as we had for anonymous pages, which
the POWER guys actually
What an unpleasing patchset. I really really hope we really have a bug in
there, and that all this crap isn't pointless uglification.
We _do_ need a flush_dcaceh_page() in all cases which you're concerned
about. Perhaps we should stick the appropriate barriers in there.
> On Thu, 15 Feb 2007 0
After running SetPageUptodate, preceeding stores to the page contents to
actually bring it uptodate may not be ordered with the store to set the page
uptodate.
Therefore, another CPU which checks PageUptodate is true, then reads the
page contents can get stale data.
Fix this by ensuring SetPageUp
After running SetPageUptodate, preceeding stores to the page contents to
actually bring it uptodate may not be ordered with the store to set the page
uptodate.
Therefore, another CPU which checks PageUptodate is true, then reads the
page contents can get stale data.
Fix this by ensuring SetPageUp
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