Re: [PATCH] mm: move page_ext_init after all struct pages are initialized

On Thu, 19 May 2016 14:29:05 -0700 Yang Shi yang.shi@linaro.org wrote:

When DEFERRED_STRUCT_PAGE_INIT is enabled, just a subset of memmap at boot are initialized, then the rest are initialized in parallel by starting one-off "pgdatinitX" kernel thread for each node X.

If page_ext_init is called before it, some pages will not have valid extension, so move page_ext_init() after it.

<stdreply>When fixing a bug, please fully describe the end-user impact of that bug</>