diff --git a/ipc/shm.c b/ipc/shm.c
index 7fa5cbe..dbac886 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -766,10 +766,10 @@
 	} else {
 #ifdef CONFIG_SHMEM
 		struct shmem_inode_info *info = SHMEM_I(inode);
-		spin_lock(&info->lock);
+		spin_lock_irq(&info->lock);
 		*rss_add += inode->i_mapping->nrpages;
 		*swp_add += info->swapped;
-		spin_unlock(&info->lock);
+		spin_unlock_irq(&info->lock);
 #else
 		*rss_add += inode->i_mapping->nrpages;
 #endif