Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935464AbdIYM4w (ORCPT ); Mon, 25 Sep 2017 08:56:52 -0400 Received: from mail-pf0-f196.google.com ([209.85.192.196]:36054 "EHLO mail-pf0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934676AbdIYM4t (ORCPT ); Mon, 25 Sep 2017 08:56:49 -0400 X-Google-Smtp-Source: AOwi7QAcMWuN39j/jCcHfD/wVmUF+GOcXZLLw26i0M2L6nPrfEcVyLUTUqVWh64zgYRZG5tvqPUF2g== From: Gargi Sharma To: linux-kernel@vger.kernel.org Cc: riel@surriel.com, julia.lawall@lip6.fr, akpm@linux-foundation.org, mingo@kernel.org, pasha.tatashin@oracle.com, ktkhai@virtuozzo.com, oleg@redhat.com, Gargi Sharma Subject: [PATCH 3/4] pid.c: Replace pidhash lookup with idr_get() Date: Mon, 25 Sep 2017 08:56:17 -0400 Message-Id: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 853 Lines: 32 pidhash is no longer required as all the functionalities are present in the idr tree associated with the namespace. nr can be looked up in the namespace by idr_get(). Signed-off-by: Gargi Sharma --- kernel/pid.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) diff --git a/kernel/pid.c b/kernel/pid.c index ea22e89..761a0c2 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -247,15 +247,7 @@ void disable_pid_allocation(struct pid_namespace *ns) struct pid *find_pid_ns(int nr, struct pid_namespace *ns) { - struct upid *pnr; - - hlist_for_each_entry_rcu(pnr, - &pid_hash[pid_hashfn(nr, ns)], pid_chain) - if (pnr->nr == nr && pnr->ns == ns) - return container_of(pnr, struct pid, - numbers[ns->level]); - - return NULL; + return idr_get(&ns->idr, &nr); } EXPORT_SYMBOL_GPL(find_pid_ns); -- 2.7.4