From: Avi Kivity <avi@cloudius-systems.com>
Date: Thu, 26 Jun 2014 14:23:12 +0000 (+0300)
Subject: nfs: fix nfs4d readlink truncated packet
X-Git-Tag: omap-for-v3.16/fixes-rc4~25^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=69bbd9c7b99974f3a701d4de6ef7010c37182a47;p=pandora-kernel.git

nfs: fix nfs4d readlink truncated packet

XDR requires 4-byte alignment; nfs4d READLINK reply writes out the padding,
but truncates the packet to the padding-less size.

Fix by taking the padding into consideration when truncating the packet.

Symptoms:

	# ll /mnt/
	ls: cannot read symbolic link /mnt/test: Input/output error
	total 4
	-rw-r--r--. 1 root root  0 Jun 14 01:21 123456
	lrwxrwxrwx. 1 root root  6 Jul  2 03:33 test
	drwxr-xr-x. 1 root root  0 Jul  2 23:50 tmp
	drwxr-xr-x. 1 root root 60 Jul  2 23:44 tree

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>
Fixes: 476a7b1f4b2c (nfsd4: don't treat readlink like a zero-copy operation)
Reviewed-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---

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