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cifs: Fix prepare_write to negotiate wsize if needed

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Fix cifs_prepare_write() to negotiate the wsize if it is unset.

Reviewed-by: Shyam Prasad N <nspmangalore@gmail.com>
Reviewed-by: Bharath SM <bharathsm@microsoft.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Paulo Alcantara <pc@manguebit.org>
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
cc: linux-cifs@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
David Howells 2025-06-18 16:39:47 +01:00 committed by Steve French
parent a379a8a2a0
commit 2c4fd3d141
1 changed files with 6 additions and 2 deletions
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8
fs/smb/client/file.c
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@ -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);