Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "21 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (21 commits)
  userfaultfd: replace ENOSPC with ESRCH in case mm has gone during copy/zeropage
  zram: rework copy of compressor name in comp_algorithm_store()
  rmap: do not call mmu_notifier_invalidate_page() under ptl
  mm: fix list corruptions on shmem shrinklist
  mm/balloon_compaction.c: don't zero ballooned pages
  MAINTAINERS: copy virtio on balloon_compaction.c
  mm: fix KSM data corruption
  mm: fix MADV_[FREE|DONTNEED] TLB flush miss problem
  mm: make tlb_flush_pending global
  mm: refactor TLB gathering API
  Revert "mm: numa: defer TLB flush for THP migration as long as possible"
  mm: migrate: fix barriers around tlb_flush_pending
  mm: migrate: prevent racy access to tlb_flush_pending
  fault-inject: fix wrong should_fail() decision in task context
  test_kmod: fix small memory leak on filesystem tests
  test_kmod: fix the lock in register_test_dev_kmod()
  test_kmod: fix bug which allows negative values on two config options
  test_kmod: fix spelling mistake: "EMTPY" -> "EMPTY"
  userfaultfd: hugetlbfs: remove superfluous page unlock in VM_SHARED case
  mm: ratelimit PFNs busy info message
  ...

2 files changed, 13 insertions, 11 deletions

diff --git a/lib/fault-inject.c b/lib/fault-inject.c
index 7d315fdb9f13..cf7b129b0b2b 100644
--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c
@@ -110,10 +110,12 @@ bool should_fail(struct fault_attr *attr, ssize_t size)
 	if (in_task()) {
 		unsigned int fail_nth = READ_ONCE(current->fail_nth);
 
-		if (fail_nth && !WRITE_ONCE(current->fail_nth, fail_nth - 1))
-			goto fail;
+		if (fail_nth) {
+			if (!WRITE_ONCE(current->fail_nth, fail_nth - 1))
+				goto fail;
 
-		return false;
+			return false;
+		}
 	}
 
 	/* No need to check any other properties if the probability is 0 */
diff --git a/lib/test_kmod.c b/lib/test_kmod.c
index 6c1d678bcf8b..ff9148969b92 100644
--- a/lib/test_kmod.c
+++ b/lib/test_kmod.c
@@ -485,7 +485,7 @@ static ssize_t config_show(struct device *dev,
 				config->test_driver);
 	else
 		len += snprintf(buf+len, PAGE_SIZE - len,
-				"driver:\tEMTPY\n");
+				"driver:\tEMPTY\n");
 
 	if (config->test_fs)
 		len += snprintf(buf+len, PAGE_SIZE - len,
@@ -493,7 +493,7 @@ static ssize_t config_show(struct device *dev,
 				config->test_fs);
 	else
 		len += snprintf(buf+len, PAGE_SIZE - len,
-				"fs:\tEMTPY\n");
+				"fs:\tEMPTY\n");
 
 	mutex_unlock(&test_dev->config_mutex);
 
@@ -746,11 +746,11 @@ static int trigger_config_run_type(struct kmod_test_device *test_dev,
 						      strlen(test_str));
 		break;
 	case TEST_KMOD_FS_TYPE:
-		break;
 		kfree_const(config->test_fs);
 		config->test_driver = NULL;
 		copied = config_copy_test_fs(config, test_str,
 					     strlen(test_str));
+		break;
 	default:
 		mutex_unlock(&test_dev->config_mutex);
 		return -EINVAL;
@@ -880,10 +880,10 @@ static int test_dev_config_update_uint_sync(struct kmod_test_device *test_dev,
 					    int (*test_sync)(struct kmod_test_device *test_dev))
 {
 	int ret;
-	long new;
+	unsigned long new;
 	unsigned int old_val;
 
-	ret = kstrtol(buf, 10, &new);
+	ret = kstrtoul(buf, 10, &new);
 	if (ret)
 		return ret;
 
@@ -918,9 +918,9 @@ static int test_dev_config_update_uint_range(struct kmod_test_device *test_dev,
 					     unsigned int max)
 {
 	int ret;
-	long new;
+	unsigned long new;
 
-	ret = kstrtol(buf, 10, &new);
+	ret = kstrtoul(buf, 10, &new);
 	if (ret)
 		return ret;
 
@@ -1146,7 +1146,7 @@ static struct kmod_test_device *register_test_dev_kmod(void)
 	struct kmod_test_device *test_dev = NULL;
 	int ret;
 
-	mutex_unlock(&reg_dev_mutex);
+	mutex_lock(&reg_dev_mutex);
 
 	/* int should suffice for number of devices, test for wrap */
 	if (unlikely(num_test_devs + 1) < 0) {