4.19-stable review patch. If anyone has any objections, please let me know.
------------------ From: Wei Yang <[email protected]> commit f101ada7da6551127d192c2f1742c1e9e0f62799 upstream. When trying to see whether current nd_region intersects with others, trim_pfn_device() has already calculated the *size* to be expanded to SECTION size. Do not double append 'adjust' to 'size' when calculating whether the end of a region collides with the next pmem region. Fixes: ae86cbfef381 "libnvdimm, pfn: Pad pfn namespaces relative to other regions" Cc: <[email protected]> Signed-off-by: Wei Yang <[email protected]> Signed-off-by: Dan Williams <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/nvdimm/pfn_devs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/nvdimm/pfn_devs.c +++ b/drivers/nvdimm/pfn_devs.c @@ -619,7 +619,7 @@ static void trim_pfn_device(struct nd_pf if (region_intersects(start, size, IORESOURCE_SYSTEM_RAM, IORES_DESC_NONE) == REGION_MIXED || !IS_ALIGNED(end, nd_pfn->align) - || nd_region_conflict(nd_region, start, size + adjust)) + || nd_region_conflict(nd_region, start, size)) *end_trunc = end - phys_pmem_align_down(nd_pfn, end); }
