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From: David Howells <dhowells@redhat.com>
To: Steve French <sfrench@samba.org>
cc: dhowells@redhat.com, Shyam Prasad N <nspmangalore@gmail.com>,
    Rohith Surabattula <rohiths.msft@gmail.com>,
    Jeff Layton <jlayton@kernel.org>,
    Christian Brauner <brauner@kernel.org>, linux-cifs@vger.kernel.org,
    netfs@lists.linux.dev, linux-fsdevel@vger.kernel.org,
    linux-kernel@vger.kernel.org
Subject: [PATCH] cifs: Fix smb3_insert_range() to move the zero_point
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Date: Wed, 22 May 2024 09:38:48 +0100
Message-ID: <367856.1716367128@warthog.procyon.org.uk>

Fix smb3_insert_range() to move the zero_point over to the new EOF.
Without this, generic/147 fails as reads of data beyond the old EOF point
return zeroes.

Fixes: 3ee1a1fc3981 ("cifs: Cut over to using netfslib")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Steve French <sfrench@samba.org>
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
---
 fs/smb/client/smb2ops.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c
index ef18cd30f66c..b87b70edd0be 100644
--- a/fs/smb/client/smb2ops.c
+++ b/fs/smb/client/smb2ops.c
@@ -3636,6 +3636,7 @@ static long smb3_insert_range(struct file *file, str=
uct cifs_tcon *tcon,
 	rc =3D smb2_copychunk_range(xid, cfile, cfile, off, count, off + len);
 	if (rc < 0)
 		goto out_2;
+	cifsi->netfs.zero_point =3D new_eof;
 =

 	rc =3D smb3_zero_data(file, tcon, off, len, xid);
 	if (rc < 0)