From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 397ACC43142 for ; Thu, 21 Jun 2018 21:36:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DBF082243F for ; Thu, 21 Jun 2018 21:36:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DBF082243F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=stgolabs.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934075AbeFUVgZ (ORCPT ); Thu, 21 Jun 2018 17:36:25 -0400 Received: from smtp2.provo.novell.com ([137.65.250.81]:57759 "EHLO smtp2.provo.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933731AbeFUV27 (ORCPT ); Thu, 21 Jun 2018 17:28:59 -0400 Received: from linux-r8p5.suse.cz (prv-ext-foundry1int.gns.novell.com [137.65.251.240]) by smtp2.provo.novell.com with ESMTP (TLS encrypted); Thu, 21 Jun 2018 15:28:48 -0600 From: Davidlohr Bueso To: akpm@linux-foundation.org, torvalds@linux-foundation.org Cc: tgraf@suug.ch, herbert@gondor.apana.org.au, manfred@colorfullife.com, mhocko@kernel.org, guillaume.knispel@supersonicimagine.com, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, dave@stgolabs.net Subject: [PATCH -next v3 0/4] rhashtable: guarantee initial allocation Date: Thu, 21 Jun 2018 14:28:21 -0700 Message-Id: <20180621212825.3059-1-dave@stgolabs.net> X-Mailer: git-send-email 2.16.4 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Changes from v2: lkml.kernel.org/r/20180601160125.30031-1-dave@stgolabs.net - Dropped original patch 1 (which removed the EINVAL returns for WARN_ON) as well as patch 5. - Added a new patch 1, which simplifies the alloc after mhocko's changes (originally suggested by Linus). - Use max_t instead of min_t for the resize. Changes from v1 lkml.kernel.org/r/20180524211135.27760-1-dave@stgolabs.net - patch 2 is reworked a bit based on the commments from Herbert Xu. o upon failure, retry immediately with GFP_NOFAIL (simpler) o the caller now passes the needed semantics, not bucket_table_alloc(). o we consider min_size when resizing, not just HASH_MIN_SIZE. - removed patch 3; not need after Michal's patch. Hi, This series is the result of the discussion with Linus around ipc subsystem initialization and how it behaves with error return when calling rhashtable_init()[1]. Instead of caring about the error or calling the infamous BUG_ON, Linus suggested we guarantee the rhashtable allocation. First two patches deal with the rhashtable_init() changes, while the patches 3+4 remove some ipc hacks we no longer need. Please consider for v4.19. [0] https://lkml.org/lkml/2018/5/23/758 Thanks! Davidlohr Bueso (4): lib/rhashtable: simplify bucket_table_alloc() lib/rhashtable: guarantee initial hashtable allocation ipc: get rid of ids->tables_initialized hack ipc: simplify ipc initialization include/linux/ipc_namespace.h | 1 - ipc/msg.c | 9 ++++----- ipc/namespace.c | 20 ++++---------------- ipc/sem.c | 10 ++++------ ipc/shm.c | 9 ++++----- ipc/util.c | 41 +++++++++++++---------------------------- ipc/util.h | 18 +++++++++--------- lib/rhashtable.c | 19 ++++++++++++------- 8 files changed, 50 insertions(+), 77 deletions(-) -- 2.16.4