From a88d60903696c01de577558080ec4fc738a70475 Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@redhat.com>
Date: Fri, 31 May 2024 15:53:42 +0100
Subject: [PATCH] cifs: Don't advance the I/O iterator before terminating
subrequest
There's now no need to make sure subreq->io_iter is advanced to match
subreq->transferred before calling one of the netfs subrequest termination
functions as the check has been removed netfslib and the iterator is reset
prior to retrying a subreq.
Fixes: 3ee1a1fc3981 ("cifs: Cut over to using netfslib")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Steve French <sfrench@samba.org>
cc: Paulo Alcantara <pc@manguebit.com>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
Signed-off-by: Steve French <stfrench@microsoft.com>
---
fs/smb/client/smb2pdu.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/fs/smb/client/smb2pdu.c b/fs/smb/client/smb2pdu.c
index 993ac36c3d585..38a06e8a0f90f 100644
--- a/fs/smb/client/smb2pdu.c
+++ b/fs/smb/client/smb2pdu.c
@@ -4577,8 +4577,6 @@ smb2_readv_callback(struct mid_q_entry *mid)
if (rdata->subreq.start < rdata->subreq.rreq->i_size)
rdata->result = 0;
}
- if (rdata->result == 0 || rdata->result == -EAGAIN)
- iov_iter_advance(&rdata->subreq.io_iter, rdata->got_bytes);
rdata->credits.value = 0;
netfs_subreq_terminated(&rdata->subreq,
(rdata->result == 0 || rdata->result == -EAGAIN) ?
@@ -4789,7 +4787,6 @@ smb2_writev_callback(struct mid_q_entry *mid)
wdata->result = -ENOSPC;
else
wdata->subreq.len = written;
- iov_iter_advance(&wdata->subreq.io_iter, written);
break;
case MID_REQUEST_SUBMITTED:
case MID_RETRY_NEEDED:
--
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