Commit a6518f73 authored Jul 06, 2018 by Miklos Szeredi

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 <mszeredi@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

parent 8ede2055

fs/open.c

+1 −6

Original line number	Diff line number	Diff line
		@@ -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,

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