On Wed, 21 Jan 2015 11:43:13 +0530 Shiraz Hashim <shas...@codeaurora.org> wrote:

> walk_page_range silently skips vma having VM_PFNMAP set,
> which leads to undesirable behaviour at client end (who
> called walk_page_range). For example for pagemap_read,
> when no callbacks are called against VM_PFNMAP vma,
> pagemap_read may prepare pagemap data for next virtual
> address range at wrong index.

This changelog doesn't have enough information for me to be able to
work out whether a -stable backport is needed.  Please always describe
the user-visible effects of a bug.

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