mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 18:19:02 +00:00
34 lines
1.1 KiB
Diff
34 lines
1.1 KiB
Diff
|
From 1c8a47df36d72ace8cf78eb6c228aa0f8027d3c2 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Miklos Szeredi <miklos@szeredi.hu>
|
||
|
|
Date: Mon, 12 Oct 2015 15:56:20 +0200
|
||
|
|
Subject: ovl: fix open in stacked overlay
|
||
|
|
|
||
|
|
If two overlayfs filesystems are stacked on top of each other, then we need
|
||
|
|
recursion in ovl_d_select_inode().
|
||
|
|
|
||
|
|
I guess d_backing_inode() is supposed to do that. But currently it doesn't
|
||
|
|
and that functionality is open coded in vfs_open(). This is now copied
|
||
|
|
into ovl_d_select_inode() to fix this regression.
|
||
|
|
|
||
|
|
Reported-by: Alban Crequy <alban.crequy@gmail.com>
|
||
|
|
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
|
||
|
|
Fixes: 4bacc9c9234c ("overlayfs: Make f_path always point to the overlay...")
|
||
|
|
Cc: David Howells <dhowells@redhat.com>
|
||
|
|
Cc: <stable@vger.kernel.org> # v4.2+
|
||
|
|
---
|
||
|
|
fs/overlayfs/inode.c | 3 +++
|
||
|
|
1 file changed, 3 insertions(+)
|
||
|
|
|
||
|
|
--- a/fs/overlayfs/inode.c
|
||
|
|
+++ b/fs/overlayfs/inode.c
|
||
|
|
@@ -362,6 +362,9 @@ struct inode *ovl_d_select_inode(struct
|
||
|
|
ovl_path_upper(dentry, &realpath);
|
||
|
|
}
|
||
|
|
|
||
|
|
+ if (realpath.dentry->d_flags & DCACHE_OP_SELECT_INODE)
|
||
|
|
+ return realpath.dentry->d_op->d_select_inode(realpath.dentry, file_flags);
|
||
|
|
+
|
||
|
|
return d_backing_inode(realpath.dentry);
|
||
|
|
}
|
||
|
|
|