Re: [PATCH] swapin flush cache bug

[Alan Cox]

> Suppose there's I/O to the physical page P asynchronously, and the
> page is placed in the swap cache.  It remains cache entry, say,
> indexed kernel virtual address K.  Then, process maps P at U.  U and K
> (may) indexes differently.  The process will get the data from memory
> (not the one in the cashe), if it's not flushed.

Ok we need to handle that case a bit more intelligently so those flushes dont
get into other ports code paths.