linux-kernel - [PATCH 01/20] filelock: split common fields into struct file_lock

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Date: Tue, 16 Jan 2024 14:45:57 -0500
From: Jeff Layton <jlayton@...nel.org>
To: Christian Brauner <brauner@...nel.org>, 
 Alexander Viro <viro@...iv.linux.org.uk>, 
 Eric Van Hensbergen <ericvh@...nel.org>, 
 Latchesar Ionkov <lucho@...kov.net>, 
 Dominique Martinet <asmadeus@...ewreck.org>, 
 Christian Schoenebeck <linux_oss@...debyte.com>, 
 David Howells <dhowells@...hat.com>, Marc Dionne <marc.dionne@...istor.com>, 
 Xiubo Li <xiubli@...hat.com>, Ilya Dryomov <idryomov@...il.com>, 
 Alexander Aring <aahringo@...hat.com>, David Teigland <teigland@...hat.com>, 
 Miklos Szeredi <miklos@...redi.hu>, 
 Andreas Gruenbacher <agruenba@...hat.com>, 
 Trond Myklebust <trond.myklebust@...merspace.com>, 
 Anna Schumaker <anna@...nel.org>, Chuck Lever <chuck.lever@...cle.com>, 
 Neil Brown <neilb@...e.de>, Olga Kornievskaia <kolga@...app.com>, 
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 Joel Becker <jlbec@...lplan.org>, Joseph Qi <joseph.qi@...ux.alibaba.com>, 
 Steve French <sfrench@...ba.org>, Paulo Alcantara <pc@...guebit.com>, 
 Ronnie Sahlberg <lsahlber@...hat.com>, 
 Shyam Prasad N <sprasad@...rosoft.com>, Namjae Jeon <linkinjeon@...nel.org>, 
 Sergey Senozhatsky <senozhatsky@...omium.org>, 
 Steven Rostedt <rostedt@...dmis.org>, 
 Masami Hiramatsu <mhiramat@...nel.org>, 
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc: linux-kernel@...r.kernel.org, v9fs@...ts.linux.dev, 
 linux-afs@...ts.infradead.org, ceph-devel@...r.kernel.org, 
 gfs2@...ts.linux.dev, linux-fsdevel@...r.kernel.org, 
 linux-nfs@...r.kernel.org, ocfs2-devel@...ts.linux.dev, 
 linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org, 
 linux-trace-kernel@...r.kernel.org, Jeff Layton <jlayton@...nel.org>
Subject: [PATCH 01/20] filelock: split common fields into struct
 file_lock_core

In a future patch, we're going to split file leases into their own
structure. Since a lot of the underlying machinery uses the same fields
move those into a new file_lock_core, and embed that inside struct
file_lock.

Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
 include/linux/filelock.h | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/include/linux/filelock.h b/include/linux/filelock.h
index 95e868e09e29..7825511c1c11 100644
--- a/include/linux/filelock.h
+++ b/include/linux/filelock.h
@@ -85,8 +85,9 @@ bool opens_in_grace(struct net *);
  *
  * Obviously, the last two criteria only matter for POSIX locks.
  */
-struct file_lock {
-	struct file_lock *fl_blocker;	/* The lock, that is blocking us */
+
+struct file_lock_core {
+	struct file_lock *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
@@ -102,6 +103,10 @@ struct file_lock {
 	int fl_link_cpu;		/* what cpu's list is this on? */
 	wait_queue_head_t fl_wait;
 	struct file *fl_file;
+};
+
+struct file_lock {
+	struct file_lock_core fl_core;
 	loff_t fl_start;
 	loff_t fl_end;
 

-- 
2.43.0