From patchwork Tue Jan 16 19:46:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 13521123 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 60A88383AD; Tue, 16 Jan 2024 19:47:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705434462; cv=none; b=u6UWl9uTCrE6qL9lUoJh3+steppdPHL+kYBmxuBDX4vT13U4Hg4z9doY1kvE0xiYaRGq7hZdgYHLe9CbMJTiRLzats6gs03v1GsVUEbU+YvZ5k4xaVoVDo501sS4uxBbQXaWVtQHq4yVVgs/SIb65soqkPRZe8B0QCV/AJZ27ow= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705434462; c=relaxed/simple; bh=fYY43RLFfrMis4alODV6T2k0xaAJFT9jD2ide0mIsXs=; h=Received:DKIM-Signature:From:Date:Subject:MIME-Version: Content-Type:Content-Transfer-Encoding:Message-Id:References: In-Reply-To:To:Cc:X-Mailer:X-Developer-Signature:X-Developer-Key; b=s7SuhagS8ELPHnHO5t2a+2iZ9alMJHzWcYSy1dHiLaXpj7dv+5DHViu5krROO9O0TSEe2s7O27TAtKRAG3YTypHtvwsnWg5f1GWWJurTvBDF4ndPiFIJRA6z+c9zmEJtG4hLFLhzy06JvLKfMGxmIZc+7W+oM9CUe7EXxLBW1tw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=E9K/g2/U; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="E9K/g2/U" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3BC6AC43399; Tue, 16 Jan 2024 19:47:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1705434461; bh=fYY43RLFfrMis4alODV6T2k0xaAJFT9jD2ide0mIsXs=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=E9K/g2/Uujn8sF4y5x9MJzMzz2PEd5Rn9wEiISpzdi/vEdTEaRvV2+345ln3I4QT6 S+xA63XiEaTBptaQBpePSLoub+Oa+1ALyB0yAtMhzHeAUxSeTYLgzb38dtL3y1U+ah YHbYNva6TYAY4PqArADjl8q4k7mA7TLzN3y8ZlTgIbR2wcYUX5R01o0YSSpkDOYYoi 2S8DVhIXomHO+y3dsRGa/ZsFKCokm6sYT0X6dJAT/hRHp95zLhSHuD8WqVdQLY1gCS spM1y5YNJhnM8LtEl1+7/eo9NeDjG207jeZlpLfRp9CS6D3DsgdBFn416VZKwbkUZ8 wj44QP8Tv17vQ== From: Jeff Layton Date: Tue, 16 Jan 2024 14:46:10 -0500 Subject: [PATCH 14/20] filelock: convert fl_blocker to file_lock_core Precedence: bulk X-Mailing-List: ceph-devel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240116-flsplit-v1-14-c9d0f4370a5d@kernel.org> References: <20240116-flsplit-v1-0-c9d0f4370a5d@kernel.org> In-Reply-To: <20240116-flsplit-v1-0-c9d0f4370a5d@kernel.org> To: Christian Brauner , Alexander Viro , Eric Van Hensbergen , Latchesar Ionkov , Dominique Martinet , Christian Schoenebeck , David Howells , Marc Dionne , Xiubo Li , Ilya Dryomov , Alexander Aring , David Teigland , Miklos Szeredi , Andreas Gruenbacher , Trond Myklebust , Anna Schumaker , Chuck Lever , Neil Brown , Olga Kornievskaia , Dai Ngo , Tom Talpey , Jan Kara , Mark Fasheh , Joel Becker , Joseph Qi , Steve French , Paulo Alcantara , Ronnie Sahlberg , Shyam Prasad N , Namjae Jeon , Sergey Senozhatsky , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers Cc: linux-kernel@vger.kernel.org, v9fs@lists.linux.dev, linux-afs@lists.infradead.org, ceph-devel@vger.kernel.org, gfs2@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org, ocfs2-devel@lists.linux.dev, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-trace-kernel@vger.kernel.org, Jeff Layton X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=3870; i=jlayton@kernel.org; h=from:subject:message-id; bh=fYY43RLFfrMis4alODV6T2k0xaAJFT9jD2ide0mIsXs=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBlpt0ilMjBo06ufTIrd2YjGuDyXSZtTiexLCJGw IEuHMWfSXiJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZabdIgAKCRAADmhBGVaC FdGmD/9/BFsdqNGxoBF3TSst8XehQYZpsJpLMeV7rWEBUb+HK/HlexsQekx1jL6VcceVvcPBrix wHvCFscaL6cEa7avBmrjjt4fGef95N0hD1Rrr2sHXIpO9DxEC61VpRu0iUoenjj6VpC/S/mm8/Q LfyJdXX7+mdgvSpQ7kTaVpOfZqF/erECj/erJEsv0ckfNpgAW4QePOxfEO3oBnR+qvr9gpMqTj1 qUNXj2om72ihHksJVJpQNP6QX0S155pjeQyxe/Ztp/89TXBtW2LZkgvud3p67Uyi3h3PFNkF1kJ 9FIYKqx6w5Od+yMutA8U3pIvBVsuaYLdLXlwjAIXAZvG4TpXfb9N6kPSJvYQxIVgzOqM5W/a+n1 oWQHwUbyqOflWa7YkPu3CiSXfSGQWwrptv3kej1jJkkBf0fsV3hQ7MmL2I+Hp0EM3eZxB0yA5ZK uiRTzTkdDHRr8rj/q5Cpv6W1fw2vO5YEwgmgUKhIuHka1tVuz7NKUbr3uUdlFujXTl26pXlYJxG AqOLgRxk5lckyF21EtHYR9xkbmLWsahdhgghJ22Uk1kgPmqxREchyhjBNhotFVl9Ei7jI23RGim DFfnA8aUa57SuTGLOD5b8bn3Mint96LsZNi9xPDEaXA02jQxljB40wnuxtGzg95IRBQ6P9EOP7A ZOKHvKvPVfO9OFQ== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 Both locks and leases deal with fl_blocker. Switch the fl_blocker pointer in struct file_lock_core to point to the file_lock_core of the blocker instead of a file_lock structure. Signed-off-by: Jeff Layton --- fs/locks.c | 10 +++++----- include/linux/filelock.h | 2 +- include/trace/events/filelock.h | 4 ++-- 3 files changed, 8 insertions(+), 8 deletions(-) diff --git a/fs/locks.c b/fs/locks.c index 280149860d5e..1bc69a96b96d 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -433,7 +433,7 @@ static void locks_move_blocks(struct file_lock *new, struct file_lock *fl) &new->fl_core.fl_blocked_requests); list_for_each_entry(f, &new->fl_core.fl_blocked_requests, fl_core.fl_blocked_member) - f->fl_core.fl_blocker = new; + f->fl_core.fl_blocker = &new->fl_core; spin_unlock(&blocked_lock_lock); } @@ -796,7 +796,7 @@ static void __locks_insert_block(struct file_lock *blocker_fl, blocker = flc; goto new_blocker; } - waiter->fl_blocker = file_lock(blocker); + waiter->fl_blocker = blocker; list_add_tail(&waiter->fl_blocked_member, &blocker->fl_blocked_requests); @@ -1019,7 +1019,7 @@ static struct file_lock_core *what_owner_is_waiting_for(struct file_lock_core *b hash_for_each_possible(blocked_hash, flc, fl_link, posix_owner_key(blocker)) { if (posix_same_owner(flc, blocker)) { while (flc->fl_blocker) - flc = &flc->fl_blocker->fl_core; + flc = flc->fl_blocker; return flc; } } @@ -2817,7 +2817,7 @@ static struct file_lock *get_next_blocked_member(struct file_lock *node) /* Next member in the linked list could be itself */ tmp = list_next_entry(node, fl_core.fl_blocked_member); - if (list_entry_is_head(tmp, &node->fl_core.fl_blocker->fl_core.fl_blocked_requests, + if (list_entry_is_head(tmp, &node->fl_core.fl_blocker->fl_blocked_requests, fl_core.fl_blocked_member) || tmp == node) { return NULL; @@ -2860,7 +2860,7 @@ static int locks_show(struct seq_file *f, void *v) tmp = get_next_blocked_member(cur); /* Fall back to parent node */ while (tmp == NULL && cur->fl_core.fl_blocker != NULL) { - cur = cur->fl_core.fl_blocker; + cur = file_lock(cur->fl_core.fl_blocker); level--; tmp = get_next_blocked_member(cur); } diff --git a/include/linux/filelock.h b/include/linux/filelock.h index 7825511c1c11..9cf1ee3efeda 100644 --- a/include/linux/filelock.h +++ b/include/linux/filelock.h @@ -87,7 +87,7 @@ bool opens_in_grace(struct net *); */ struct file_lock_core { - struct file_lock *fl_blocker; /* The lock that is blocking us */ + struct file_lock_core *fl_blocker; /* The lock that is blocking us */ struct list_head fl_list; /* link into file_lock_context */ struct hlist_node fl_link; /* node in global lists */ struct list_head fl_blocked_requests; /* list of requests with diff --git a/include/trace/events/filelock.h b/include/trace/events/filelock.h index 92ed07544f94..49263b69215e 100644 --- a/include/trace/events/filelock.h +++ b/include/trace/events/filelock.h @@ -68,7 +68,7 @@ DECLARE_EVENT_CLASS(filelock_lock, __field(struct file_lock *, fl) __field(unsigned long, i_ino) __field(dev_t, s_dev) - __field(struct file_lock *, fl_blocker) + __field(struct file_lock_core *, fl_blocker) __field(fl_owner_t, fl_owner) __field(unsigned int, fl_pid) __field(unsigned int, fl_flags) @@ -125,7 +125,7 @@ DECLARE_EVENT_CLASS(filelock_lease, __field(struct file_lock *, fl) __field(unsigned long, i_ino) __field(dev_t, s_dev) - __field(struct file_lock *, fl_blocker) + __field(struct file_lock_core *, fl_blocker) __field(fl_owner_t, fl_owner) __field(unsigned int, fl_flags) __field(unsigned char, fl_type)