The patch titled
Subject: selftests: hugetlb_dio: check for initial conditions to skip in the start
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
selftests-hugetlb_dio-check-for-initial-conditions-to-skip-in-the-start.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-hugetlb_dio-check-for-initial-conditions-to-skip-in-the-start.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
Subject: selftests: hugetlb_dio: check for initial conditions to skip in the start
Date: Fri, 1 Nov 2024 19:15:57 +0500
The test should be skipped if initial conditions aren't fulfilled in the
start instead of failing and outputting non-compliant TAP logs. This kind
of failure pollutes the results. The initial conditions are:
- The test should only execute if /tmp file can be allocated.
- The test should only execute if huge pages are free.
Before:
TAP version 13
1..4
Bail out! Error opening file
: Read-only file system (30)
# Planned tests != run tests (4 != 0)
# Totals: pass:0 fail:0 xfail:0 xpass:0 skip:0 error:0
After:
TAP version 13
1..0 # SKIP Unable to allocate file: Read-only file system
Link: https://lkml.kernel.org/r/20241101141557.3159432-1-usama.anjum@xxxxxxxxxxxxx
Signed-off-by: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
Fixes: 3a103b5315b7 ("selftest: mm: Test if hugepage does not get leaked during __bio_release_pages()")
Cc: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Cc: Donet Tom <donettom@xxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/mm/hugetlb_dio.c | 19 ++++++++++++-------
1 file changed, 12 insertions(+), 7 deletions(-)
--- a/tools/testing/selftests/mm/hugetlb_dio.c~selftests-hugetlb_dio-check-for-initial-conditions-to-skip-in-the-start
+++ a/tools/testing/selftests/mm/hugetlb_dio.c
@@ -44,13 +44,6 @@ void run_dio_using_hugetlb(unsigned int
if (fd < 0)
ksft_exit_fail_perror("Error opening file\n");
- /* Get the free huge pages before allocation */
- free_hpage_b = get_free_hugepages();
- if (free_hpage_b == 0) {
- close(fd);
- ksft_exit_skip("No free hugepage, exiting!\n");
- }
-
/* Allocate a hugetlb page */
orig_buffer = mmap(NULL, h_pagesize, mmap_prot, mmap_flags, -1, 0);
if (orig_buffer == MAP_FAILED) {
@@ -94,8 +87,20 @@ void run_dio_using_hugetlb(unsigned int
int main(void)
{
size_t pagesize = 0;
+ int fd;
ksft_print_header();
+
+ /* Open the file to DIO */
+ fd = open("/tmp", O_TMPFILE | O_RDWR | O_DIRECT, 0664);
+ if (fd < 0)
+ ksft_exit_skip("Unable to allocate file: %s\n", strerror(errno));
+ close(fd);
+
+ /* Check if huge pages are free */
+ if (!get_free_hugepages())
+ ksft_exit_skip("No free hugepage, exiting\n");
+
ksft_set_plan(4);
/* Get base page size */
_
Patches currently in -mm which might be from usama.anjum@xxxxxxxxxxxxx are
selftests-hugetlb_dio-check-for-initial-conditions-to-skip-in-the-start.patch
