Re: [PATCH 7/7] cifs: set replay flag for retries of write command

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tentatively merged to cifs-2.6.git for-next pending review and testing
(after correcting the duplicate label problem with patch 1)

On Sat, Jan 20, 2024 at 9:33 PM <nspmangalore@xxxxxxxxx> wrote:
>
> From: Shyam Prasad N <sprasad@xxxxxxxxxxxxx>
>
> 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>
> ---
>  fs/smb/client/cifsglob.h | 1 +
>  fs/smb/client/file.c     | 1 +
>  fs/smb/client/smb2pdu.c  | 4 +++-
>  3 files changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h
> index b5abe4d6f478..acda357e1dfd 100644
> --- a/fs/smb/client/cifsglob.h
> +++ b/fs/smb/client/cifsglob.h
> @@ -1506,6 +1506,7 @@ 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 1b4262aff8fa..49d262d1df5f 100644
> --- a/fs/smb/client/file.c
> +++ b/fs/smb/client/file.c
> @@ -3300,6 +3300,7 @@ 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 0291482a3f51..a8ac9240a854 100644
> --- a/fs/smb/client/smb2pdu.c
> +++ b/fs/smb/client/smb2pdu.c
> @@ -4770,7 +4770,7 @@ 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);
>
>         /*
> @@ -4855,6 +4855,8 @@ 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);
> --
> 2.34.1
>


-- 
Thanks,

Steve





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