shm: fix shmctl(SHM_INFO) lockup with !CONFIG_SHMEM

[platform/adaptation/renesas_rcar/renesas_kernel.git] / ipc / shm.c

diff --git a/ipc/shm.c b/ipc/shm.c
index c0a021f..f8f69fa 100644 (file)
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -565,11 +565,15 @@ static void shm_get_stat(struct ipc_namespace *ns, unsigned long *rss,
                        struct hstate *h = hstate_file(shp->shm_file);
                        *rss += pages_per_huge_page(h) * mapping->nrpages;
                } else {
+#ifdef CONFIG_SHMEM
                        struct shmem_inode_info *info = SHMEM_I(inode);
                        spin_lock(&info->lock);
                        *rss += inode->i_mapping->nrpages;
                        *swp += info->swapped;
                        spin_unlock(&info->lock);
+#else
+                       *rss += inode->i_mapping->nrpages;
+#endif
                }
 
                total++;