+ selftests-mm-drop-redundant-open-in-mprotect_tests.patch added to mm-unstable branch

+ selftests-mm-drop-redundant-open-in-mprotect_tests.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: selftests/mm: drop redundant open() in mprotect_tests()
has been added to the -mm mm-unstable branch.  Its filename is
     selftests-mm-drop-redundant-open-in-mprotect_tests.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-drop-redundant-open-in-mprotect_tests.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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 via various
branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there most days

------------------------------------------------------
From: Hongfu Li <lihongfu@kylinos.cn>
Subject: selftests/mm: drop redundant open() in mprotect_tests()
Date: Mon, 17 Aug 2026 16:06:16 +0800

Remove duplicate open() for local pagemap_fd in mprotect_tests() that
shadows the global pagemap_fd already opened in main().  The local fd is
never used in the function.

Link: https://lore.kernel.org/20260817080616.52946-1-hongfu.li@linux.dev
Signed-off-by: Hongfu Li <lihongfu@kylinos.cn>
Reviewed-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 tools/testing/selftests/mm/pagemap_ioctl.c |    6 ------
 1 file changed, 6 deletions(-)

--- a/tools/testing/selftests/mm/pagemap_ioctl.c~selftests-mm-drop-redundant-open-in-mprotect_tests
+++ a/tools/testing/selftests/mm/pagemap_ioctl.c
@@ -1332,12 +1332,6 @@ int mprotect_tests(void)
 	int ret;
 	char *mem, *mem2;
 	struct page_region vec;
-	int pagemap_fd = open("/proc/self/pagemap", O_RDONLY);
-
-	if (pagemap_fd < 0) {
-		fprintf(stderr, "open() failed\n");
-		exit(1);
-	}
 
 	/* 1. Map two pages */
 	mem = mmap(0, 2 * page_size, PROT_READ|PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
_

Patches currently in -mm which might be from lihongfu@kylinos.cn are

ksm-update-comments-and-docs-to-reference-folio-mapping.patch
selftests-mm-drop-duplicate-test_seal_mprotect_two_vma_with_gap-call.patch
selftests-mm-fix-read_file-return-value-check.patch
mm-swap-fix-swap_cluster_lock-config_swap-stub-signature-mismatch.patch
mm-cma-remove-stray-newline-from-auto-generated-cma-area-name.patch
selftests-mm-drop-redundant-open-in-mprotect_tests.patch