From: Chuck Lever <chuck.lever@oracle.com>
Date: Thu, 20 Dec 2007 19:54:42 +0000 (-0500)
Subject: NFS: Fix use of copy_to_user() in idmap_pipe_upcall
X-Git-Tag: v2.6.25-rc1~1146^2~27
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a661b77fc12a172edea4b709e37f8cd58a6bd500;p=pandora-kernel.git

NFS: Fix use of copy_to_user() in idmap_pipe_upcall

The idmap_pipe_upcall() function expects the copy_to_user() function to
return a negative error value if the call fails, but copy_to_user()
returns an unsigned long number of bytes that couldn't be copied.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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