Re: [GIT PULL] ocfs2 changes for 2.6.32

[Roland Dreier <rdreier@cisco.com>]

 >   int copy_file(const char *src, const char *dst)
 >   {
 >	/* Start a file copy */
 >	int cookie = copyfile(src, dst, 0);
 >
 >	/* Async case? */
 >	if (cookie > 0) {
 >		int ret;
 >
 >		while ((ret = copyfile_ctrl(cookie, COPYFILE_WAIT)) > 0)
 >			/* nothing */;
 >
 >		/* Error handling is shared for async/sync */
 >		cookie = ret;
 >	}
 >	if (cookie < 0) {
 >		perror("copyfile failed");
 >		return -1;
 >	}

I guess one bit of semantics to figure out is what happens if copyfile()
does the async case but then copyfile_ctrl() returns an error halfway
through... is the state of the dest file just undefined?

 - R.