linux-kernel - Re: [PATCH v4] selftest: mm: Test if hugepage does not get leaked during __bio_release

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Date: Fri, 7 Jun 2024 13:06:23 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: Donet Tom <donettom@...ux.ibm.com>
Cc: Shuah Khan <shuah@...nel.org>, Matthew Wilcox <willy@...radead.org>,
 Tony Battersby <tonyb@...ernetics.com>, linux-mm@...ck.org,
 linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org, Ritesh
 Harjani <ritesh.list@...il.com>, Mike Rapoport <rppt@...nel.org>, Muchun
 Song <songmuchun@...edance.com>, David Hildenbrand <david@...hat.com>,
 p.raghav@...sung.com, usama.anjum@...labora.com
Subject: Re: [PATCH v4] selftest: mm: Test if hugepage does not get leaked
 during __bio_release_pages()

On Fri,  7 Jun 2024 13:20:00 -0500 Donet Tom <donettom@...ux.ibm.com> wrote:

> V4:
> - Added this test to run_vmtests.sh.

v4 also contains this change:

--- a/tools/testing/selftests/mm/hugetlb_dio.c~selftest-mm-test-if-hugepage-does-not-get-leaked-during-__bio_release_pages-v4
+++ a/tools/testing/selftests/mm/hugetlb_dio.c
@@ -40,7 +40,7 @@ void run_dio_using_hugetlb(unsigned int
 		ksft_exit_fail_msg("Unable to determine huge page size\n");
 
 	/* Open the file to DIO */
-	fd = open("/tmp", O_TMPFILE | O_RDWR | O_DIRECT);
+	fd = open("/tmp", O_TMPFILE | O_RDWR | O_DIRECT, 0664);
 	if (fd < 0)
 		ksft_exit_fail_perror("Error opening file\n");