nfsd4: fix file leak on open_downgrade

commit f197c27196a5e7631b89e2e92daa096fcf7c302c upstream.

Stateid's hold a read reference for a read open, a write reference for a
write open, and an additional one of each for each read+write open.  The
latter wasn't getting put on a downgrade, so something like:

	open RW
	open R
	downgrade to R

was resulting in a file leak.

Also fix an imbalance in an error path.

Regression from 7d94784293096c0a46897acdb83be5abd9278ece "nfsd4: fix
downgrade/lock logic".

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Change-Id: If182a7b4a7cf7051b9eb141822feb50701efc958
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35655
Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com>
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>

0 files changed, 0 insertions, 0 deletions