fs/namespace.c: Fix typo in comment

replace 'permanetly' with 'permanently' in the comment &
replace 'propogated' with 'propagated' in the comment
Signed-off-by: Yuesong Li <liyuesong@vivo.com>
Link: https://lore.kernel.org/r/20240806034710.2807788-1-liyuesong@vivo.comSigned-off-by: Christian Brauner <brauner@kernel.org>

fs/namespace.c

@@ -1774,7 +1774,7 @@ static void umount_tree(struct mount *mnt, enum umount_tree_flags how)
 		list_del_init(&p->mnt_child);
 	}
 
-	/* Add propogated mounts to the tmp_list */
+	/* Add propagated mounts to the tmp_list */
 	if (how & UMOUNT_PROPAGATE)
 		propagate_umount(&tmp_list);
 
@@ -5613,7 +5613,7 @@ static bool mnt_already_visible(struct mnt_namespace *ns,
 			/* Only worry about locked mounts */
 			if (!(child->mnt.mnt_flags & MNT_LOCKED))
 				continue;
-			/* Is the directory permanetly empty? */
+			/* Is the directory permanently empty? */
 			if (!is_empty_dir_inode(inode))
 				goto next;
 		}