static inline void flush_dcache_page(struct page *page)
{
+ /*
+ * HugeTLB pages are always fully mapped and only head page will be
+ * set PG_dcache_clean (see comments in flush_icache_pte()).
+ */
+ if (PageHuge(page))
+ page = compound_head(page);
+
if (test_bit(PG_dcache_clean, &page->flags))
clear_bit(PG_dcache_clean, &page->flags);
}
{
struct page *page = pte_page(pte);
+ /*
+ * HugeTLB pages are always fully mapped, so only setting head page's
+ * PG_dcache_clean flag is enough.
+ */
+ if (PageHuge(page))
+ page = compound_head(page);
+
if (!test_and_set_bit(PG_dcache_clean, &page->flags))
flush_icache_all();
}