Fix cifs_prepare_write() to negotiate the wsize if it is unset.
Fixes: 69c3c023af25 ("cifs: Implement netfslib hooks")
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
Reviewed-by: Paulo Alcantara <pc@xxxxxxxxxxxxx>
cc: Steve French <sfrench@xxxxxxxxx>
cc: netfs@xxxxxxxxxxxxxxx
cc: linux-fsdevel@xxxxxxxxxxxxxxx
cc: linux-cifs@xxxxxxxxxxxxxxx
---
fs/smb/client/file.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/fs/smb/client/file.c b/fs/smb/client/file.c
index 9835672267d2..e9212da32f01 100644
--- a/fs/smb/client/file.c
+++ b/fs/smb/client/file.c
@@ -52,6 +52,7 @@ static void cifs_prepare_write(struct netfs_io_subrequest *subreq)
struct netfs_io_stream *stream = &req->rreq.io_streams[subreq->stream_nr];
struct TCP_Server_Info *server;
struct cifsFileInfo *open_file = req->cfile;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(wdata->rreq->inode->i_sb);
size_t wsize = req->rreq.wsize;
int rc;
@@ -63,6 +64,10 @@ static void cifs_prepare_write(struct netfs_io_subrequest *subreq)
server = cifs_pick_channel(tlink_tcon(open_file->tlink)->ses);
wdata->server = server;
+ if (cifs_sb->ctx->wsize == 0)
+ cifs_negotiate_wsize(server, cifs_sb->ctx,
+ tlink_tcon(req->cfile->tlink));
+
retry:
if (open_file->invalidHandle) {
rc = cifs_reopen_file(open_file, false);
@@ -160,10 +165,9 @@ static int cifs_prepare_read(struct netfs_io_subrequest *subreq)
server = cifs_pick_channel(tlink_tcon(req->cfile->tlink)->ses);
rdata->server = server;
- if (cifs_sb->ctx->rsize == 0) {
+ if (cifs_sb->ctx->rsize == 0)
cifs_negotiate_rsize(server, cifs_sb->ctx,
tlink_tcon(req->cfile->tlink));
- }
rc = server->ops->wait_mtu_credits(server, cifs_sb->ctx->rsize,
&size, &rdata->credits);
