Commit 91a99f1d authored by Peter Xu's avatar Peter Xu Committed by Andrew Morton
Browse files

selftests/vm: use memfd for hugepage-mmap test 

This test was overlooked with a hard-coded mntpoint path in test when
we're removing the hugetlb mntpoint in commit 0796c7b8.  Fix it up so
the test can keep running.

Link: https://lkml.kernel.org/r/Y3aojfUC2nSwbCzB@x1n


Fixes: 0796c7b8 ("selftests/vm: drop mnt point for hugetlb in run_vmtests.sh")
Signed-off-by: default avatarPeter Xu <peterx@redhat.com>
Reported-by: default avatarJoel Savitz <jsavitz@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 47939359

tools/testing/selftests/vm/hugepage-mmap.c

+4 −6
Original line number Diff line number Diff line
@@ -16,14 +16,13 @@ 
 * range.

 * Other architectures, such as ppc64, i386 or x86_64 are not so constrained.

 */



#define _GNU_SOURCE

#include <stdlib.h>

#include <stdio.h>

#include <unistd.h>

#include <sys/mman.h>

#include <fcntl.h>



#define FILE_NAME "huge/hugepagefile"

#define LENGTH (256UL*1024*1024)

#define PROTECTION (PROT_READ | PROT_WRITE)
@@ -67,16 +66,16 @@ int main(void) 
	void *addr;

	int fd, ret;



	fd = open(FILE_NAME, O_CREAT | O_RDWR, 0755);

	fd = memfd_create("hugepage-mmap", MFD_HUGETLB);

	if (fd < 0) {

		perror("Open failed");

		perror("memfd_create() failed");

		exit(1);

	}



	addr = mmap(ADDR, LENGTH, PROTECTION, FLAGS, fd, 0);

	if (addr == MAP_FAILED) {

		perror("mmap");

		unlink(FILE_NAME);

		close(fd);

		exit(1);

	}
@@ -87,7 +86,6 @@ int main(void) 


	munmap(addr, LENGTH);

	close(fd);

	unlink(FILE_NAME);



	return ret;

}