NFSD: fix nfsd_reset_versions for NFSv4.

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[ Upstream commit 800a938f0b ]

If you write "-2 -3 -4" to the "versions" file, it will
notice that no versions are enabled, and nfsd_reset_versions()
is called.
This enables all major versions, not no minor versions.
So we lose the invariant that NFSv4 is only advertised when
at least one minor is enabled.

Fix the code to explicitly enable minor versions for v4,
change it to use nfsd_vers() to test and set, and simplify
the code.

Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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NeilBrown 2017-03-10 11:36:39 +11:00 • committed by Greg Kroah-Hartman

parent 0154269f9c

commit 817f60ccf7

1 changed files with 12 additions and 15 deletions

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fs/nfsd/nfssvc.c

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