netdev - [PATCH v2 39/51] netfs: Rearrange netfs_io_subrequest to put request pointer first

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Message-ID: <20231117211544.1740466-40-dhowells@redhat.com>
Date: Fri, 17 Nov 2023 21:15:31 +0000
From: David Howells <dhowells@...hat.com>
To: Jeff Layton <jlayton@...nel.org>,
	Steve French <smfrench@...il.com>
Cc: David Howells <dhowells@...hat.com>,
	Matthew Wilcox <willy@...radead.org>,
	Marc Dionne <marc.dionne@...istor.com>,
	Paulo Alcantara <pc@...guebit.com>,
	Shyam Prasad N <sprasad@...rosoft.com>,
	Tom Talpey <tom@...pey.com>,
	Dominique Martinet <asmadeus@...ewreck.org>,
	Ilya Dryomov <idryomov@...il.com>,
	Christian Brauner <christian@...uner.io>,
	linux-cachefs@...hat.com,
	linux-afs@...ts.infradead.org,
	linux-cifs@...r.kernel.org,
	linux-nfs@...r.kernel.org,
	ceph-devel@...r.kernel.org,
	v9fs@...ts.linux.dev,
	linux-fsdevel@...r.kernel.org,
	linux-mm@...ck.org,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Steve French <sfrench@...ba.org>,
	Shyam Prasad N <nspmangalore@...il.com>,
	Rohith Surabattula <rohiths.msft@...il.com>
Subject: [PATCH v2 39/51] netfs: Rearrange netfs_io_subrequest to put request pointer first

Rearrange the netfs_io_subrequest struct to put the netfs_io_request
pointer (rreq) first.  This then allows netfs_io_subrequest to be put in a
union with a pointer to a wrapper around netfs_io_request for cifs.

Signed-off-by: David Howells <dhowells@...hat.com>
cc: Steve French <sfrench@...ba.org>
cc: Shyam Prasad N <nspmangalore@...il.com>
cc: Rohith Surabattula <rohiths.msft@...il.com>
cc: Jeff Layton <jlayton@...nel.org>
cc: linux-cifs@...r.kernel.org
cc: linux-cachefs@...hat.com
cc: linux-fsdevel@...r.kernel.org
cc: linux-mm@...ck.org
---
 include/linux/netfs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/netfs.h b/include/linux/netfs.h
index 39f885fea383..7d9b61d21a70 100644
--- a/include/linux/netfs.h
+++ b/include/linux/netfs.h
@@ -209,8 +209,8 @@ struct netfs_cache_resources {
  * the pages it points to can be relied on to exist for the duration.
  */
 struct netfs_io_subrequest {
-	struct work_struct	work;
 	struct netfs_io_request *rreq;		/* Supervising I/O request */
+	struct work_struct	work;
 	struct list_head	rreq_link;	/* Link in rreq->subrequests */
 	struct iov_iter		io_iter;	/* Iterator for this subrequest */
 	loff_t			start;		/* Where to start the I/O */