The patch titled
Subject: mm-hugepages-add-hugetlb-vma-mremap-test-v8
has been added to the -mm tree. Its filename is
mm-hugepages-add-hugetlb-vma-mremap-test-v8.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-hugepages-add-hugetlb-vma-mremap-test-v8.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-hugepages-add-hugetlb-vma-mremap-test-v8.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Mina Almasry <almasrymina@xxxxxxxxxx>
Subject: mm-hugepages-add-hugetlb-vma-mremap-test-v8
Link: https://lkml.kernel.org/r/20211014200542.4126947-2-almasrymina@xxxxxxxxxx
Signed-off-by: Mina Almasry <almasrymina@xxxxxxxxxx>
Acked-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Ken Chen <kenchen@xxxxxxxxxx>
Cc: Chris Kennelly <ckennelly@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Kirill Shutemov <kirill@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/vm/hugepage-mremap.c | 10 +++-------
tools/testing/selftests/vm/run_vmtests.sh | 11 +++++++++++
2 files changed, 14 insertions(+), 7 deletions(-)
--- a/tools/testing/selftests/vm/hugepage-mremap.c~mm-hugepages-add-hugetlb-vma-mremap-test-v8
+++ a/tools/testing/selftests/vm/hugepage-mremap.c
@@ -3,12 +3,8 @@
* hugepage-mremap:
*
* Example of remapping huge page memory in a user application using the
- * mremap system call. Before running this application, make sure that the
- * administrator has mounted the hugetlbfs filesystem (on some directory
- * like /mnt) using the command mount -t hugetlbfs nodev /mnt. In this
- * example, the app is requesting memory of size 10MB that is backed by
- * huge pages.
- *
+ * mremap system call. Code assumes a hugetlbfs filesystem is mounted
+ * at './huge'. The code will use 10MB worth of huge pages.
*/
#define _GNU_SOURCE
@@ -109,7 +105,7 @@ int main(void)
{
int ret = 0;
- int fd = open("/mnt/huge/test", O_CREAT | O_RDWR, 0755);
+ int fd = open("/huge/test", O_CREAT | O_RDWR, 0755);
if (fd < 0) {
perror("Open failed");
--- a/tools/testing/selftests/vm/run_vmtests.sh~mm-hugepages-add-hugetlb-vma-mremap-test-v8
+++ a/tools/testing/selftests/vm/run_vmtests.sh
@@ -108,6 +108,17 @@ else
echo "[PASS]"
fi
+echo "-----------------------"
+echo "running hugepage-mremap"
+echo "-----------------------"
+./hugepage-mremap
+if [ $? -ne 0 ]; then
+ echo "[FAIL]"
+ exitcode=1
+else
+ echo "[PASS]"
+fi
+
echo "NOTE: The above hugetlb tests provide minimal coverage. Use"
echo " https://github.com/libhugetlbfs/libhugetlbfs.git for"
echo " hugetlb regression testing."
_
Patches currently in -mm which might be from almasrymina@xxxxxxxxxx are
mm-hugepages-add-mremap-support-for-hugepage-backed-vma.patch
mm-hugepages-add-hugetlb-vma-mremap-test.patch
mm-hugepages-add-hugetlb-vma-mremap-test-v8.patch
