[PATCH 4.19 201/271] pNFS: Fix a typo in pnfs_update_layout

[Greg Kroah-Hartman]

From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>

commit 400417b05f3ec0531544ca5f94e64d838d8b8849 upstream.

We're supposed to wait for the outstanding layout count to go to zero,
but that got lost somehow.

Fixes: d03360aaf5cca ("pNFS: Ensure we return the error if someone...")
Reported-by: Anna Schumaker <Anna.Schumaker@xxxxxxxxxx>
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 fs/nfs/pnfs.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1866,7 +1866,7 @@ lookup_again:
 	    atomic_read(&lo->plh_outstanding) != 0) {
 		spin_unlock(&ino->i_lock);
 		lseg = ERR_PTR(wait_var_event_killable(&lo->plh_outstanding,
-					atomic_read(&lo->plh_outstanding)));
+					!atomic_read(&lo->plh_outstanding)));
 		if (IS_ERR(lseg) || !list_empty(&lo->plh_segs))
 			goto out_put_layout_hdr;
 		pnfs_put_layout_hdr(lo);