linux-kernel - [PATCH 3/5] mm/gup_test.c: Convert verify_dma

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230613201827.9441-4-vishal.moola@gmail.com>
Date:   Tue, 13 Jun 2023 13:18:25 -0700
From:   "Vishal Moola (Oracle)" <vishal.moola@...il.com>
To:     akpm@...ux-foundation.org
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        "Vishal Moola (Oracle)" <vishal.moola@...il.com>
Subject: [PATCH 3/5] mm/gup_test.c: Convert verify_dma_pinned() to us folios

verify_dma_pinned() checks that pages are dma-pinned. We can convert
this to use folios.

Signed-off-by: Vishal Moola (Oracle) <vishal.moola@...il.com>
---
 mm/gup_test.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/mm/gup_test.c b/mm/gup_test.c
index 8ae7307a1bb6..860b093b4b3e 100644
--- a/mm/gup_test.c
+++ b/mm/gup_test.c
@@ -40,24 +40,25 @@ static void verify_dma_pinned(unsigned int cmd, struct page **pages,
 			      unsigned long nr_pages)
 {
 	unsigned long i;
-	struct page *page;
+	struct folio *folio;
 
 	switch (cmd) {
 	case PIN_FAST_BENCHMARK:
 	case PIN_BASIC_TEST:
 	case PIN_LONGTERM_BENCHMARK:
 		for (i = 0; i < nr_pages; i++) {
-			page = pages[i];
-			if (WARN(!page_maybe_dma_pinned(page),
+			folio = page_folio(pages[i]);
+
+			if (WARN(!folio_maybe_dma_pinned(folio),
 				 "pages[%lu] is NOT dma-pinned\n", i)) {
 
-				dump_page(page, "gup_test failure");
+				dump_page(&folio->page, "gup_test failure");
 				break;
 			} else if (cmd == PIN_LONGTERM_BENCHMARK &&
-				WARN(!is_longterm_pinnable_page(page),
+				WARN(!folio_is_longterm_pinnable(folio),
 				     "pages[%lu] is NOT pinnable but pinned\n",
 				     i)) {
-				dump_page(page, "gup_test failure");
+				dump_page(&folio->page, "gup_test failure");
 				break;
 			}
 		}
-- 
2.40.1