From patchwork Thu Jan 25 10:43:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 13530487 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 16B4C60DDE; Thu, 25 Jan 2024 10:44:35 +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=1706179476; cv=none; b=kczH6DtkvhoB4stzeLhuwWSvlYNAL7sv6UzapSX6FOvGDJSbOrJV0c34B0+tyvNhsWMTRAwcELnb8NWbFKJLnDwaERo6Ds2oTWs6wNHk9vPEdwV3nIPCSpsnTilHhYbGmt7oXiaUEwGqlAKyT3V1Kgt3tAELTbpe5a2wurNuWN8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706179476; c=relaxed/simple; bh=B7266iuZ6+jiQ1YXgJ/0VnrXkglgYdR1uixZomRPk2c=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=iNDcSNpsN9fwPq1tlVin04pSIWyJtNUp9z/jW3daZsy4O0jGX9pr62WpJOoRN452Q4nvBrU1lig56oG+yN34wFhrm7Fyf+j+Mw40nhNE4aPR36m0G1H3x20/Cx1tisJuR8/DoUvdD8cY5Qsm8IDjShChhHMRKd2J1ofQpcCnhog= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gLutGvm9; 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="gLutGvm9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EA4A8C433A6; Thu, 25 Jan 2024 10:44:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706179475; bh=B7266iuZ6+jiQ1YXgJ/0VnrXkglgYdR1uixZomRPk2c=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=gLutGvm9LI3t1GU/k6XYthttE9Pq60QidcfLG3kxeidlTngovN9L+g/qPNq3rtBGr WxBV7uarlZor94LDlSrKBmKpqZj2+H1ckZSDWAVJYx6TYO3NAj1IF6cSjz3l15/hIc Nu6FvBDWY1CAdtbi6ZWItiWOnZC0CUQaHIhy8IL4K9nYxibzz9dZHeFaqAOzdbrjuL lZqOgvIMnaP4oJTLUaOn7DP5n7W0HwNthT/vL+pUoyzbWbBqlwh2Gm+OTz6V+bleXQ WBHAYDnzqGdLg3tSERM/U97kYXqfjep43Z9CxjPKEgI+Ac2new7btkdTQ2HbVrgoC2 lQ7hk33cqFccw== From: Jeff Layton Date: Thu, 25 Jan 2024 05:43:02 -0500 Subject: [PATCH v2 21/41] filelock: convert fl_blocker to file_lock_core Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240125-flsplit-v2-21-7485322b62c7@kernel.org> References: <20240125-flsplit-v2-0-7485322b62c7@kernel.org> In-Reply-To: <20240125-flsplit-v2-0-7485322b62c7@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 , Shyam Prasad N , Namjae Jeon , Sergey Senozhatsky , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Ronnie Sahlberg 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, linux-trace-kernel@vger.kernel.org, Jeff Layton X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=4323; i=jlayton@kernel.org; h=from:subject:message-id; bh=B7266iuZ6+jiQ1YXgJ/0VnrXkglgYdR1uixZomRPk2c=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBlsjs8TgeIwFdM3HQqZRf5jL3P2iWoVln/LVtLc Wx4KR8mYvWJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZbI7PAAKCRAADmhBGVaC FeqHEAC7hs0OVw0/Q6bUb0n5zl7WPVDh2WjgOcwm+GPh5veajkFPgKKFlCuD5cgdGhQ9iHn/Q7S igImP8Sodax54n/7plM4hMqcz1pJTiv+auZ2/cKv/X/gRZroEjzIGA9k8AGr6+cKBmNOGIybgIS JqefyxHLx1/e4P8GBvuIHPjcSkiPhysQ76Y404VnxiqZ8ZO4sxtGCVeYcYULKDChsvwG0pcdLbe 1mR9v2i5e3ZaCIhkog7DJjTUzLcsti0po4YVCZS2f6byipymhKxHbLoZ9grkYHfgrR37kTRj9Wd u3P9JTS7GszZdFkYRC3a3TabCej5VO01MoEumFwdFzYZUyJVZIx6Tay/tmZZQQUGONfYcC1Cy1d 2vUHs8IzBjo9zyAFkfj0gcgD14Y5XxXWkX2gqtqsRzyg9ga31XotzQ6514GckvblyepHvTxSzQg SMDG5foCHEel8JKHH9eDI0Ca0+7uA52wWSkVgzZtk/V64pfAmKd9GrcY6jts+XUF4xBc4Two+vY lpc7knt8HX9IINXw9g7NR39Z7l0R+UCF9Kpc+DZHlFOopTYuW2B62vP1sjv3nZCMUOeFvJjWsv8 q151rYLtH+JaTuxpvcbnWKl1QCGvsB0USK9CZdUvW9rZknoFj8dHMd3ePubFTbu6NzWWzHMPX2C 28qyzE5/k+4yHOA== 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 | 16 ++++++++-------- include/linux/filelock.h | 2 +- include/trace/events/filelock.h | 4 ++-- 3 files changed, 11 insertions(+), 11 deletions(-) diff --git a/fs/locks.c b/fs/locks.c index a86841fc8220..8e320c95c416 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -400,7 +400,7 @@ static void locks_move_blocks(struct file_lock *new, struct file_lock *fl) /* * As ctx->flc_lock is held, new requests cannot be added to - * ->fl_blocked_requests, so we don't need a lock to check if it + * ->flc_blocked_requests, so we don't need a lock to check if it * is empty. */ if (list_empty(&fl->fl_core.flc_blocked_requests)) @@ -410,7 +410,7 @@ static void locks_move_blocks(struct file_lock *new, struct file_lock *fl) &new->fl_core.flc_blocked_requests); list_for_each_entry(f, &new->fl_core.flc_blocked_requests, fl_core.flc_blocked_member) - f->fl_core.flc_blocker = new; + f->fl_core.flc_blocker = &new->fl_core; spin_unlock(&blocked_lock_lock); } @@ -773,7 +773,7 @@ static void __locks_insert_block(struct file_lock *blocker_fl, blocker = flc; goto new_blocker; } - waiter->flc_blocker = file_lock(blocker); + waiter->flc_blocker = blocker; list_add_tail(&waiter->flc_blocked_member, &blocker->flc_blocked_requests); @@ -996,7 +996,7 @@ static struct file_lock_core *what_owner_is_waiting_for(struct file_lock_core *b hash_for_each_possible(blocked_hash, flc, flc_link, posix_owner_key(blocker)) { if (posix_same_owner(flc, blocker)) { while (flc->flc_blocker) - flc = &flc->flc_blocker->fl_core; + flc = flc->flc_blocker; return flc; } } @@ -2798,9 +2798,9 @@ 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.flc_blocked_member); - if (list_entry_is_head(tmp, &node->fl_core.flc_blocker->fl_core.flc_blocked_requests, - fl_core.flc_blocked_member) - || tmp == node) { + if (list_entry_is_head(tmp, &node->fl_core.flc_blocker->flc_blocked_requests, + fl_core.flc_blocked_member) + || tmp == node) { return NULL; } @@ -2841,7 +2841,7 @@ 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.flc_blocker != NULL) { - cur = cur->fl_core.flc_blocker; + cur = file_lock(cur->fl_core.flc_blocker); level--; tmp = get_next_blocked_member(cur); } diff --git a/include/linux/filelock.h b/include/linux/filelock.h index 0c0db7f20ff6..9ddf27faba94 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 *flc_blocker; /* The lock that is blocking us */ + struct file_lock_core *flc_blocker; /* The lock that is blocking us */ struct list_head flc_list; /* link into file_lock_context */ struct hlist_node flc_link; /* node in global lists */ struct list_head flc_blocked_requests; /* list of requests with diff --git a/include/trace/events/filelock.h b/include/trace/events/filelock.h index 9efd7205460c..c0b92e888d16 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 *, blocker) + __field(struct file_lock_core *, blocker) __field(fl_owner_t, owner) __field(unsigned int, pid) __field(unsigned int, 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 *, blocker) + __field(struct file_lock_core *, blocker) __field(fl_owner_t, owner) __field(unsigned int, flags) __field(unsigned char, type)