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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 BFFBBC4320A for ; Mon, 16 Aug 2021 13:14:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A3E17632AC for ; Mon, 16 Aug 2021 13:14:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239361AbhHPNOW (ORCPT ); Mon, 16 Aug 2021 09:14:22 -0400 Received: from mail.kernel.org ([198.145.29.99]:56748 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239488AbhHPNJy (ORCPT ); Mon, 16 Aug 2021 09:09:54 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 08FEF610A0; Mon, 16 Aug 2021 13:09:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1629119362; bh=50qp5bqEcGG9URWnDAqgtGC2ROLaKJgXnPPFlSuya3c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2vCoaU+HFXQ4nQQ2W/GENClRiLMG6zHHjXvI+GIAFbSWo6LpyMY4swUO6ZYHsvvLt OK37vgznI3q77PaMgHGo+zcN2WdKmpFgdnxQfwLtBXj/1XYiNtL51X121kIYSZP5/L nVZbewoqZNqTtc8e/roHtomQDBUSvFDdghlNz4hM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jeff Layton , Ilya Dryomov Subject: [PATCH 5.10 93/96] ceph: add some lockdep assertions around snaprealm handling Date: Mon, 16 Aug 2021 15:02:43 +0200 Message-Id: <20210816125438.082025803@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210816125434.948010115@linuxfoundation.org> References: <20210816125434.948010115@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jeff Layton commit a6862e6708c15995bc10614b2ef34ca35b4b9078 upstream. Turn some comments into lockdep asserts. Signed-off-by: Jeff Layton Reviewed-by: Ilya Dryomov Signed-off-by: Ilya Dryomov Signed-off-by: Greg Kroah-Hartman --- fs/ceph/snap.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) --- a/fs/ceph/snap.c +++ b/fs/ceph/snap.c @@ -65,6 +65,8 @@ void ceph_get_snap_realm(struct ceph_mds_client *mdsc, struct ceph_snap_realm *realm) { + lockdep_assert_held_write(&mdsc->snap_rwsem); + dout("get_realm %p %d -> %d\n", realm, atomic_read(&realm->nref), atomic_read(&realm->nref)+1); /* @@ -113,6 +115,8 @@ static struct ceph_snap_realm *ceph_crea { struct ceph_snap_realm *realm; + lockdep_assert_held_write(&mdsc->snap_rwsem); + realm = kzalloc(sizeof(*realm), GFP_NOFS); if (!realm) return ERR_PTR(-ENOMEM); @@ -143,6 +147,8 @@ static struct ceph_snap_realm *__lookup_ struct rb_node *n = mdsc->snap_realms.rb_node; struct ceph_snap_realm *r; + lockdep_assert_held_write(&mdsc->snap_rwsem); + while (n) { r = rb_entry(n, struct ceph_snap_realm, node); if (ino < r->ino) @@ -176,6 +182,8 @@ static void __put_snap_realm(struct ceph static void __destroy_snap_realm(struct ceph_mds_client *mdsc, struct ceph_snap_realm *realm) { + lockdep_assert_held_write(&mdsc->snap_rwsem); + dout("__destroy_snap_realm %p %llx\n", realm, realm->ino); rb_erase(&realm->node, &mdsc->snap_realms); @@ -198,6 +206,8 @@ static void __destroy_snap_realm(struct static void __put_snap_realm(struct ceph_mds_client *mdsc, struct ceph_snap_realm *realm) { + lockdep_assert_held_write(&mdsc->snap_rwsem); + dout("__put_snap_realm %llx %p %d -> %d\n", realm->ino, realm, atomic_read(&realm->nref), atomic_read(&realm->nref)-1); if (atomic_dec_and_test(&realm->nref)) @@ -236,6 +246,8 @@ static void __cleanup_empty_realms(struc { struct ceph_snap_realm *realm; + lockdep_assert_held_write(&mdsc->snap_rwsem); + spin_lock(&mdsc->snap_empty_lock); while (!list_empty(&mdsc->snap_empty)) { realm = list_first_entry(&mdsc->snap_empty, @@ -269,6 +281,8 @@ static int adjust_snap_realm_parent(stru { struct ceph_snap_realm *parent; + lockdep_assert_held_write(&mdsc->snap_rwsem); + if (realm->parent_ino == parentino) return 0; @@ -686,6 +700,8 @@ int ceph_update_snap_trace(struct ceph_m int err = -ENOMEM; LIST_HEAD(dirty_realms); + lockdep_assert_held_write(&mdsc->snap_rwsem); + dout("update_snap_trace deletion=%d\n", deletion); more: ceph_decode_need(&p, e, sizeof(*ri), bad);