linux-kernel - [RFC PATCH 26/35] Revert "ovl: fix may_write

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Message-Id: <20180412150826.20988-27-mszeredi@redhat.com>
Date:   Thu, 12 Apr 2018 17:08:17 +0200
From:   Miklos Szeredi <mszeredi@...hat.com>
To:     linux-unionfs@...r.kernel.org
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [RFC PATCH 26/35] 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@...hat.com>
---
 fs/namespace.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/fs/namespace.c b/fs/namespace.c
index 9d1374ab6e06..9ec9bf74116b 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... */
-- 
2.14.3