nfsd: remove unnecessary atomic ops

These bit operations don't need to be atomic.  They're all done under a
single big mutex anyway.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 8799b87..5c97d47 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1579,8 +1579,8 @@
 	}
 	/* remember the open */
 	filp->f_mode |= open->op_share_access;
-	set_bit(open->op_share_access, &stp->st_access_bmap);
-	set_bit(open->op_share_deny, &stp->st_deny_bmap);
+	__set_bit(open->op_share_access, &stp->st_access_bmap);
+	__set_bit(open->op_share_deny, &stp->st_deny_bmap);
 
 	return nfs_ok;
 }