Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs fixes from Al Viro:
 "A bunch of fixes; the last one is this cycle regression, the rest are
  -stable fodder."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fix off-by-one in argument passed by iterate_fd() to callbacks
  lookup_one_len: don't accept . and ..
  cifs: get rid of blind d_drop() in readdir
  nfs_lookup_revalidate(): fix a leak
  don't do blind d_drop() in nfs_prime_dcache()

1 files changed, 8 insertions, 6 deletions

diff --git a/fs/file.c b/fs/file.c
index 7cb71b992603..eff23162485f 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -994,16 +994,18 @@ int iterate_fd(struct files_struct *files, unsigned n,
 		const void *p)
 {
 	struct fdtable *fdt;
-	struct file *file;
 	int res = 0;
 	if (!files)
 		return 0;
 	spin_lock(&files->file_lock);
-	fdt = files_fdtable(files);
-	while (!res && n < fdt->max_fds) {
-		file = rcu_dereference_check_fdtable(files, fdt->fd[n++]);
-		if (file)
-			res = f(p, file, n);
+	for (fdt = files_fdtable(files); n < fdt->max_fds; n++) {
+		struct file *file;
+		file = rcu_dereference_check_fdtable(files, fdt->fd[n]);
+		if (!file)
+			continue;
+		res = f(p, file, n);
+		if (res)
+			break;
 	}
 	spin_unlock(&files->file_lock);
 	return res;