[PATCH 06/16] devpts: More obvious check for the system devpts in pty allocation

[Eric W. Biederman]

This makes the logic of the test clearer, and removes a confusing
use of opts.newinstance, which allows later changes not to worry
if newinstance is set on the primary mount of devpts or not.

Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
---
 fs/devpts/inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index 0b84063a1e14..752b2cc6be1c 100644
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -534,7 +534,7 @@ retry:
 
 	mutex_lock(&allocated_ptys_lock);
 	if (pty_count >= pty_limit -
-			(fsi->mount_opts.newinstance ? pty_reserve : 0)) {
+			((devpts_mnt->mnt_sb == sb) ? pty_reserve : 0)) {
 		mutex_unlock(&allocated_ptys_lock);
 		return -ENOSPC;
 	}
-- 
2.8.1