Nick Piggin wrote:
Yeah you could, but it looks back to front to me.
The VM tells the filesystem that the machine took a fault at virtual
address X, then the filesystem asks the VM what pgoff that is, then
tells the VM to install the corresponding page to vaddr X.
With my ->fault, the VM asks the filesystem to give the page that
corresponds to vaddr X, then installs it into that vaddr.
Err, sorry, that's what the current ->nopage does. It is then still
up to the filesystem to do the vaddr to pgoff conversion.
My fault patches of course just ask the filesystem for the page at
a given pgoff.
--
SUSE Labs, Novell Inc.
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