Message ID | 20200610201345.13273-5-willy@infradead.org (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | Large pages in the page cache | expand |
On 10 Jun 2020, at 16:12, Matthew Wilcox wrote: > From: "Matthew Wilcox (Oracle)" <willy@infradead.org> > > PG_private_2 is defined as being PF_ANY (applicable to tail pages > as well as regular & head pages). That means that the first tail > page of a double-map page will appear to have Private2 set. Use the > Workingset bit instead which is defined as PF_HEAD so any attempt to > access the Workingset bit on a tail page will redirect to the head page's > Workingset bit. > > Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> > --- Make sense to me. Reviewed-by: Zi Yan <ziy@nvidia.com> — Best Regards, Yan Zi
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 222f6f7b2bb3..de6e0696f55c 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -164,7 +164,7 @@ enum pageflags { PG_slob_free = PG_private, /* Compound pages. Stored in first tail page's flags */ - PG_double_map = PG_private_2, + PG_double_map = PG_workingset, /* non-lru isolated movable page */ PG_isolated = PG_reclaim,