linux-kernel - [PATCH v5 07/12] cifs: Replace the writedata replay bool with a netfs sreq flag

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Date: Mon,  5 Feb 2024 22:57:19 +0000
From: David Howells <dhowells@...hat.com>
To: Steve French <smfrench@...il.com>
Cc: David Howells <dhowells@...hat.com>,
	Jeff Layton <jlayton@...nel.org>,
	Matthew Wilcox <willy@...radead.org>,
	Paulo Alcantara <pc@...guebit.com>,
	Shyam Prasad N <sprasad@...rosoft.com>,
	Tom Talpey <tom@...pey.com>,
	Christian Brauner <christian@...uner.io>,
	netfs@...ts.linux.dev,
	linux-cifs@...r.kernel.org,
	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 v5 07/12] cifs: Replace the writedata replay bool with a netfs sreq flag

Replace the 'replay' bool in cifs_writedata (now cifs_io_subrequest) with a
flag in the netfs_io_subrequest flags.

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: netfs@...ts.linux.dev
cc: linux-fsdevel@...r.kernel.org
cc: linux-mm@...ck.org
---
 fs/smb/client/cifsglob.h | 1 -
 fs/smb/client/file.c     | 2 +-
 fs/smb/client/smb2pdu.c  | 4 ++--
 include/linux/netfs.h    | 1 +
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h
index dd0cef742a64..1dfed3eddaa2 100644
--- a/fs/smb/client/cifsglob.h
+++ b/fs/smb/client/cifsglob.h
@@ -1479,7 +1479,6 @@ struct cifs_io_subrequest {
 	unsigned int			xid;
 	int				result;
 	bool				have_credits;
-	bool				replay;
 	struct kvec			iov[2];
 	struct TCP_Server_Info		*server;
 #ifdef CONFIG_CIFS_SMB_DIRECT
diff --git a/fs/smb/client/file.c b/fs/smb/client/file.c
index ce5f24206be0..14602ed6bc39 100644
--- a/fs/smb/client/file.c
+++ b/fs/smb/client/file.c
@@ -3645,7 +3645,7 @@ cifs_resend_wdata(struct cifs_io_subrequest *wdata, struct list_head *wdata_list
 			if (wdata->cfile->invalidHandle)
 				rc = -EAGAIN;
 			else {
-				wdata->replay = true;
+				set_bit(NETFS_SREQ_RETRYING, &wdata->subreq.flags);
 #ifdef CONFIG_CIFS_SMB_DIRECT
 				if (wdata->mr) {
 					wdata->mr->need_invalidate = true;
diff --git a/fs/smb/client/smb2pdu.c b/fs/smb/client/smb2pdu.c
index 2ecc5f210329..84e3675eb41e 100644
--- a/fs/smb/client/smb2pdu.c
+++ b/fs/smb/client/smb2pdu.c
@@ -4797,7 +4797,7 @@ smb2_async_writev(struct cifs_io_subrequest *wdata)
 	struct cifs_io_parms *io_parms = NULL;
 	int credit_request;
 
-	if (!wdata->server || wdata->replay)
+	if (!wdata->server || test_bit(NETFS_SREQ_RETRYING, &wdata->subreq.flags))
 		server = wdata->server = cifs_pick_channel(tcon->ses);
 
 	/*
@@ -4882,7 +4882,7 @@ smb2_async_writev(struct cifs_io_subrequest *wdata)
 	rqst.rq_nvec = 1;
 	rqst.rq_iter = wdata->subreq.io_iter;
 	rqst.rq_iter_size = iov_iter_count(&rqst.rq_iter);
-	if (wdata->replay)
+	if (test_bit(NETFS_SREQ_RETRYING, &wdata->subreq.flags))
 		smb2_set_replay(server, &rqst);
 #ifdef CONFIG_CIFS_SMB_DIRECT
 	if (wdata->mr)
diff --git a/include/linux/netfs.h b/include/linux/netfs.h
index 61195cf16d6e..455ccfe8bffa 100644
--- a/include/linux/netfs.h
+++ b/include/linux/netfs.h
@@ -224,6 +224,7 @@ struct netfs_io_subrequest {
 #define NETFS_SREQ_SEEK_DATA_READ	3	/* Set if ->read() should SEEK_DATA first */
 #define NETFS_SREQ_NO_PROGRESS		4	/* Set if we didn't manage to read any data */
 #define NETFS_SREQ_ONDEMAND		5	/* Set if it's from on-demand read mode */
+#define NETFS_SREQ_RETRYING		6	/* Set if we're retrying the op */
 };
 
 enum netfs_io_origin {