Patch "cifs: set replay flag for retries of write command" has been added to the 6.6-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    cifs: set replay flag for retries of write command

to the 6.6-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     cifs-set-replay-flag-for-retries-of-write-command.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit e4f9f10921c4186f927aaa359652c50085b4bab0
Author: Shyam Prasad N <sprasad@xxxxxxxxxxxxx>
Date:   Thu Jan 18 09:14:10 2024 +0000

    cifs: set replay flag for retries of write command
    
    [ Upstream commit 4cdad80261862c8cdcbb5fd232aa713d0bdefe24 ]
    
    Similar to the rest of the commands, this is a change
    to add replay flags on retry. This one does not add a
    back-off, considering that we may want to flush a write
    ASAP to the server. Considering that this will be a
    flush of cached pages, the retrans value is also not
    honoured.
    
    Signed-off-by: Shyam Prasad N <sprasad@xxxxxxxxxxxxx>
    Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h
index 479bf0d9ad589..8fbdb781d70a6 100644
--- a/fs/smb/client/cifsglob.h
+++ b/fs/smb/client/cifsglob.h
@@ -1515,6 +1515,7 @@ struct cifs_writedata {
 	struct smbd_mr			*mr;
 #endif
 	struct cifs_credits		credits;
+	bool				replay;
 };
 
 /*
diff --git a/fs/smb/client/file.c b/fs/smb/client/file.c
index f41804245fca1..6d44991e1ccdc 100644
--- a/fs/smb/client/file.c
+++ b/fs/smb/client/file.c
@@ -3413,6 +3413,7 @@ cifs_resend_wdata(struct cifs_writedata *wdata, struct list_head *wdata_list,
 			if (wdata->cfile->invalidHandle)
 				rc = -EAGAIN;
 			else {
+				wdata->replay = true;
 #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 6a5d478b3cef6..c73a621a8b83e 100644
--- a/fs/smb/client/smb2pdu.c
+++ b/fs/smb/client/smb2pdu.c
@@ -4801,7 +4801,7 @@ smb2_async_writev(struct cifs_writedata *wdata,
 	struct cifs_io_parms *io_parms = NULL;
 	int credit_request;
 
-	if (!wdata->server)
+	if (!wdata->server || wdata->replay)
 		server = wdata->server = cifs_pick_channel(tcon->ses);
 
 	/*
@@ -4886,6 +4886,8 @@ smb2_async_writev(struct cifs_writedata *wdata,
 	rqst.rq_nvec = 1;
 	rqst.rq_iter = wdata->iter;
 	rqst.rq_iter_size = iov_iter_count(&rqst.rq_iter);
+	if (wdata->replay)
+		smb2_set_replay(server, &rqst);
 #ifdef CONFIG_CIFS_SMB_DIRECT
 	if (wdata->mr)
 		iov[0].iov_len += sizeof(struct smbd_buffer_descriptor_v1);