From a6518f73e60e5044656d1ba587e7463479a9381a Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 6 Jul 2018 23:57:06 +0200 Subject: [PATCH] vfs: don't open real Let overlayfs do its thing when opening a file. This enables stacking and fixes the corner case when a file is opened for read, modified through a writable open, and data is read from the read-only file. After this patch the read-only open will not return stale data even in this case. Signed-off-by: Miklos Szeredi Signed-off-by: Al Viro --- fs/open.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/fs/open.c b/fs/open.c index 9c6617dbb2c0..fed24862ef83 100644 --- a/fs/open.c +++ b/fs/open.c @@ -893,13 +893,8 @@ EXPORT_SYMBOL(file_path); */ int vfs_open(const struct path *path, struct file *file) { - struct dentry *dentry = d_real(path->dentry, NULL, file->f_flags, 0); - - if (IS_ERR(dentry)) - return PTR_ERR(dentry); - file->f_path = *path; - return do_dentry_open(file, d_backing_inode(dentry), NULL); + return do_dentry_open(file, d_backing_inode(path->dentry), NULL); } struct file *dentry_open(const struct path *path, int flags,