30 Oct
2020
30 Oct
'20
6:15 p.m.
On 30 Oct 2020, at 14:12, Matthew Wilcox wrote:
On Fri, Oct 30, 2020 at 11:57:15AM -0400, Zi Yan wrote:
In isolate_migratepages_block, when cc->alloc_contig is true, we are able to isolate compound pages, nr_migratepages and nr_isolated did not count compound pages correctly, causing us to isolate more pages than we thought. Use thp_nr_pages to count pages. Otherwise, we might be trapped
^^^^^^^^^^^^Maybe replace that sentence with "Count compound pages as the number of base pages they contain"?
Sure. And compound_nr is used instead of thp_nr_pages in fact.
OK. V3 is coming.
— Best Regards, Yan Zi