Re: [PATCH 02/15] percpu: perform tlb flush after pcpu_map_pages() failure

[Christoph Lameter]

On Fri, 22 Aug 2014, Tejun Heo wrote:

> If pcpu_map_pages() fails midway, it unmaps the already mapped pages.
> Currently, it doesn't flush tlb after the partial unmapping.  This may
> be okay in most cases as the established mapping hasn't been used at
> that point but it can go wrong and when it goes wrong it'd be
> extremely difficult to track down.

So why is this separate? You added the unmapping in the last patch without
the flushing and this is a fixup for the patch before?


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