[PATCH 3/8] KVM: gmem: Fix kvm_gmem_issue_arch_invalidate()

[isaku . yamahata]

From: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>

__filemap_get_folio() can return error.  Use IS_ERR_OR_NULL.

Signed-off-by: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
---
 virt/kvm/guest_mem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/virt/kvm/guest_mem.c b/virt/kvm/guest_mem.c
index c81d2bb9ae93..ed03f1d12172 100644
--- a/virt/kvm/guest_mem.c
+++ b/virt/kvm/guest_mem.c
@@ -53,7 +53,7 @@ static struct folio *kvm_gmem_get_folio(struct inode *inode, pgoff_t index)
 	struct folio *folio;
 
 	folio = kvm_gmem_get_huge_folio(inode, index);
-	if (!folio) {
+	if (IS_ERR_OR_NULL(folio)) {
 		folio = filemap_grab_folio(inode->i_mapping, index);
 		if (!folio)
 			return NULL;
-- 
2.25.1