From: Miklos Szeredi <mszeredi@redhat.com>
Date: Wed, 18 Jul 2018 13:44:43 +0000 (+0200)
Subject: Revert "ovl: fix may_write_real() for overlayfs directories"
X-Git-Tag: v4.19-rc1~66^2~39
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=d561f218564855f69791216882a2622af37e5776;p=linux.git

Revert "ovl: fix may_write_real() for overlayfs directories"

This reverts commit 954c736f865d6c0c68ae4263a2f3502ee7c447a3.

Overlayfs no longer relies on the vfs for checking writability of files.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
---

diff --git a/fs/namespace.c b/fs/namespace.c
index 8ddd14806799..76a742e36b32 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -468,9 +468,7 @@ static inline int may_write_real(struct file *file)
 
 	/* File refers to upper, writable layer? */
 	upperdentry = d_real(dentry, NULL, 0, D_REAL_UPPER);
-	if (upperdentry &&
-	    (file_inode(file) == d_inode(upperdentry) ||
-	     file_inode(file) == d_inode(dentry)))
+	if (upperdentry && file_inode(file) == d_inode(upperdentry))
 		return 0;
 
 	/* Lower layer: can't write to real file, sorry... */