HWPOISON: comment the possible set_page_dirty() race (db0480b3) · Commits · e / devices / android_kernel_fairphone_FP3

mm/memory-failure.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -687,6 +687,8 @@ static int hwpoison_user_mappings(struct page *p, unsigned long pfn,
		/*
		* Propagate the dirty bit from PTEs to struct page first, because we
		* need this to decide if we should kill or just drop the page.
		* XXX: the dirty test could be racy: set_page_dirty() may not always
		* be called inside page lock (it's recommended but not enforced).
		*/
		mapping = page_mapping(p);
		if (!PageDirty(p) && mapping && mapping_cap_writeback_dirty(mapping)) {