NFSD: don't report compiled-out versions as present
authorPavel Emelyanov <xemul@openvz.org>
Fri, 14 May 2010 11:33:36 +0000 (15:33 +0400)
committerJ. Bruce Fields <bfields@citi.umich.edu>
Fri, 14 May 2010 22:46:14 +0000 (18:46 -0400)
commit15ddb4aec54422ead137b03ea4e9b3f5db3f7cc2
tree7553c06ca7ba059d30289bb8f2e09753671220de
parent4dc6ec00f6347b72312fa41dfc587d5302b05544
NFSD: don't report compiled-out versions as present

The /proc/fs/nfsd/versions file calls nfsd_vers() to check whether
the particular nfsd version is present/available. The problem is
that once I turn off e.g. NFSD-V4 this call returns -1 which is
true from the callers POV which is wrong.

The proposal is to report false in that case.

The bug has existed since 6658d3a7bbfd1768 "[PATCH] knfsd: remove
nfsd_versbits as intermediate storage for desired versions".

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: stable@kernel.org
Acked-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
fs/nfsd/nfssvc.c