From nobody Wed Dec 31 18:08:14 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99E78C4332F for ; Tue, 31 Oct 2023 19:34:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234911AbjJaTef (ORCPT ); Tue, 31 Oct 2023 15:34:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48526 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233983AbjJaTeb (ORCPT ); Tue, 31 Oct 2023 15:34:31 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BBDBAA3 for ; Tue, 31 Oct 2023 12:34:29 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 47BE7C433C8; Tue, 31 Oct 2023 19:34:29 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.96) (envelope-from ) id 1qxuVQ-00EK8O-13; Tue, 31 Oct 2023 15:34:28 -0400 Message-ID: <20231031193428.133533311@goodmis.org> User-Agent: quilt/0.66 Date: Tue, 31 Oct 2023 15:31:10 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Andrew Morton Subject: [PATCH v4 1/3] eventfs: Have a free_ei() that just frees the eventfs_inode References: <20231031193109.018322397@goodmis.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: "Steven Rostedt (Google)" As the eventfs_inode is freed in two different locations, make a helper function free_ei() to make sure all the allocated fields of the eventfs_inode is freed. This requires renaming the existing free_ei() which is called by the srcu handler to free_rcu_ei() and have free_ei() just do the freeing, where free_rcu_ei() will call it. Signed-off-by: Steven Rostedt (Google) --- fs/tracefs/event_inode.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/fs/tracefs/event_inode.c b/fs/tracefs/event_inode.c index 754885dfe71c..76323f48d5f0 100644 --- a/fs/tracefs/event_inode.c +++ b/fs/tracefs/event_inode.c @@ -129,6 +129,13 @@ static struct dentry *create_dir(const char *name, str= uct dentry *parent) return eventfs_end_creating(dentry); } =20 +static void free_ei(struct eventfs_inode *ei) +{ + kfree_const(ei->name); + kfree(ei->d_children); + kfree(ei); +} + /** * eventfs_set_ei_status_free - remove the dentry reference from an eventf= s_inode * @ti: the tracefs_inode of the dentry @@ -168,9 +175,7 @@ void eventfs_set_ei_status_free(struct tracefs_inode *t= i, struct dentry *dentry) eventfs_remove_dir(ei_child); } =20 - kfree_const(ei->name); - kfree(ei->d_children); - kfree(ei); + free_ei(ei); return; } =20 @@ -784,13 +789,11 @@ struct eventfs_inode *eventfs_create_events_dir(const= char *name, struct dentry return ERR_PTR(-ENOMEM); } =20 -static void free_ei(struct rcu_head *head) +static void free_rcu_ei(struct rcu_head *head) { struct eventfs_inode *ei =3D container_of(head, struct eventfs_inode, rcu= ); =20 - kfree_const(ei->name); - kfree(ei->d_children); - kfree(ei); + free_ei(ei); } =20 /** @@ -881,7 +884,7 @@ void eventfs_remove_dir(struct eventfs_inode *ei) for (i =3D 0; i < ei->nr_entries; i++) unhook_dentry(&ei->d_children[i], &dentry_list); unhook_dentry(&ei->dentry, &dentry_list); - call_srcu(&eventfs_srcu, &ei->rcu, free_ei); + call_srcu(&eventfs_srcu, &ei->rcu, free_rcu_ei); } mutex_unlock(&eventfs_mutex); =20 --=20 2.42.0