Messages in this thread | | | Date | Tue, 15 May 2001 06:44:08 -0400 (EDT) | From | Alexander Viro <> | Subject | Re: Getting FS access events |
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On Tue, 15 May 2001, Daniel Phillips wrote:
> That's because you left out his invalidate: > > * create an instance in pagecache > * start reading into buffer cache (doesn't invalidate, right?) > * start writing using pagecache (invalidate buffer copy)
Bzzert. You have a race here. Let's make it explicit:
start writing put write request in queue block on that start reading into buffer cache put read request into queue read from media write to media
And no, we can't invalidate from IO completion hook.
> * lose the page > * try to read it (via pagecache) > > Everthing ok.
Nope.
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