From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dave Hansen <dave.hansen@intel.com>
Subject: ecryptfs log spew from EINTR
Date: Wed, 05 Mar 2014 09:15:28 -0800
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To: ecryptfs@vger.kernel.org, Tyler Hicks <tyhicks@canonical.com>, LKML <linux-kernel@vger.kernel.org>

I have a little program that uses mmap() to copy files.  Essentially:

	addr1 = mmap(fd1);
	addr2 = mmap(fd2);
	memcpy(addr1, addr2, len);

If these files are on ecryptfs and I interrupt the memcpy() with ^C, I
consistently get this in dmesg:

ecryptfs_decrypt_page: Error attempting to read lower page; rc = [-4]
ecryptfs_readpage: Error decrypting page; rc = [-4]

-4 is, of course -EINTR because of the ^C.  Should we be suppressing the
message when we see EINTR?