On Thu, Aug 01, 2019 at 11:42:39AM -0700, Song Liu wrote: > Similar to previous patch, pagecache_get_page() avoids race condition > with truncate by checking page->mapping == mapping. This does not work > for compound pages. This patch let it check compound_head(page)->mapping > instead. > > Suggested-by: Johannes Weiner <hannes@xxxxxxxxxxx> > Signed-off-by: Song Liu <songliubraving@xxxxxx> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
