NFS/pNFS: Fix a leak of the layout 'plh_outstanding' counter

commit cb2856c5971723910a86b7d1d0cf623d6919cbc4 upstream.

If we exit _lgopen_prepare_attached() without setting a layout, we will
currently leak the plh_outstanding counter.

Fixes: 411ae722d10a ("pNFS: Wait for stale layoutget calls to complete in pnfs_update_layout()")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index c1ad54b..471bfa2 100644 (file)
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -2245,6 +2245,7 @@ static void _lgopen_prepare_attached(struct nfs4_opendata *data,
                                             &rng, GFP_KERNEL);
        if (!lgp) {
                pnfs_clear_first_layoutget(lo);
+               nfs_layoutget_end(lo);
                pnfs_put_layout_hdr(lo);
                return;
        }