+ mm-hugepages-add-hugetlb-vma-mremap-test-v8.patch added to -mm tree

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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

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------------------------------------------------------
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




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