madvise: Support MADV_REMOVE on tmpfs

Change-Id: Ic99d374c4d2630944c7bc838937d7f45601783c6
refs: #1371

executer/kernel/mcctrl/syscall.c

@@ -974,6 +974,10 @@ static int pager_req_create(ihk_os_t os, int fd, uintptr_t result_pa)
 		goto out;
 	}
 
+	if (!strcmp(inode->i_sb->s_type->name, "tmpfs")) {
+		mf_flags = MF_IS_REMOVABLE;
+	}
+
 	if (!strcmp(inode->i_sb->s_type->name, "proc")) {
 		error = -ESRCH;
 		goto out;

test/issues/1371/README

@@ -0,0 +1,20 @@
+/* REDME COPYRIGHT FUJITSU LIMITED 2020 */
+
+ltp: madvise01: MADV_REMOVEが期待通りに動作しない
+https://postpeta.pccluster.org/redmine/issues/1371
+
+テストセットREADME
+
+(0) 事前準備
+  1. $HOME/.mck_test_configを用意する
+
+(1) テスト実行方法
+  1. ./run.sh
+
+(2) テスト項目詳細
+
+  LTPの下記項目を実行し期待通りに動作することを確認する
+  "test OK." が書き出されれば合格判定となる。具体例はresult.logを参照。
+  - madvise01
+
+以上。

test/issues/1371/result.log

@@ -0,0 +1,35 @@
+[root@hostname 1371]# ./run.sh
+mcstop+release.sh ... done
+mcreboot.sh -c 12-59 -m 512M@4 ... done
+test run.
+Script started, file is tmp.dCXi5LtX9k
+tst_test.c:1096: INFO: Timeout per run is 0h 05m 00s
+madvise01.c:121: PASS: madvise test for MADV_NORMAL PASSED
+madvise01.c:121: PASS: madvise test for MADV_RANDOM PASSED
+madvise01.c:121: PASS: madvise test for MADV_SEQUENTIAL PASSED
+madvise01.c:121: PASS: madvise test for MADV_WILLNEED PASSED
+madvise01.c:121: PASS: madvise test for MADV_DONTNEED PASSED
+madvise01.c:121: PASS: madvise test for MADV_REMOVE PASSED
+madvise01.c:121: PASS: madvise test for MADV_DONTFORK PASSED
+madvise01.c:121: PASS: madvise test for MADV_DOFORK PASSED
+madvise01.c:118: FAIL: madvise test for MADV_HWPOISON failed with return = -1, errno = 1 : ???
+madvise01.c:113: CONF: MADV_MERGEABLE is not supported
+madvise01.c:113: CONF: MADV_UNMERGEABLE is not supported
+madvise01.c:118: FAIL: madvise test for MADV_HUGEPAGE failed with return = -1, errno = 9 : ???
+madvise01.c:118: FAIL: madvise test for MADV_NOHUGEPAGE failed with return = -1, errno = 9 : ???
+madvise01.c:121: PASS: madvise test for MADV_DONTDUMP PASSED
+madvise01.c:121: PASS: madvise test for MADV_DODUMP PASSED
+madvise01.c:113: CONF: MADV_FREE is not supported
+madvise01.c:121: PASS: madvise test for MADV_WIPEONFORK PASSED
+madvise01.c:121: PASS: madvise test for MADV_KEEPONFORK PASSED
+safe_macros.c:773: WARN: madvise01.c:102: umount(tmp_madvise) failed: EBUSY
+
+Summary:
+passed   12
+failed   3
+skipped  3
+warnings 1
+tst_tmpdir.c:330: WARN: tst_rmdir: rmobj(/tmp/EEcwqf) failed: remove(/tmp/EEcwqf/tmp_madvise) failed; errno=16: EBUSY
+Script done, file is tmp.dCXi5LtX9k
+test OK.
+mcstop+release.sh ... done

test/issues/1371/run.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+# run.sh COPYRIGHT FUJITSU LIMITED 2020
+
+# load setting and booting mck.
+USELTP=1
+. ../../common.sh
+chmod 777 /dev/mcos*
+
+echo "test run."
+FAIL=0
+
+pushd ${LTPBIN} > /dev/null
+
+temp_log=`mktemp tmp.XXXXXXXXXX`
+script -f -c "${MCEXEC} ${LTPBIN}/madvise01" ${temp_log}
+
+passed=`cat <<__EOL__
+MADV_NORMAL
+MADV_RANDOM
+MADV_SEQUENTIAL
+MADV_WILLNEED
+MADV_DONTNEED
+MADV_REMOVE
+MADV_DONTFORK
+MADV_DOFORK
+MADV_DONTDUMP
+MADV_DODUMP
+MADV_WIPEONFORK
+MADV_KEEPONFORK
+__EOL__`
+for madv in $passed
+do
+	grep "$madv" "${temp_log}" | grep -q "PASS:"
+	if [ $? -ne 0 ]; then
+		FAIL=1
+	fi
+done
+
+rm -f "$temp_log"
+
+if [ ${FAIL} -eq 1 ]; then
+	echo "test NG."
+else
+	echo "test OK."
+fi
+
+mcstop