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selftests/mm: drop redundant open() in mprotect_tests()

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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>
Reviewed-by: SJ Park <sj@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
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>
This commit is contained in:
Hongfu Li
2026-08-17 16:06:16 +08:00
committed by Andrew Morton
parent c1afbd5de1
commit dd14e6cd33
1 changed files with 0 additions and 6 deletions
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6
tools/testing/selftests/mm/pagemap_ioctl.c
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@@ -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);