Re: review of patch "cifs: untangle server->maxBuf and CIFSMaxBufSize"

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On Wed, 12 Oct 2011 12:15:29 -0500
Steve French <smfrench@xxxxxxxxx> wrote:

> Reviewing changes to fs/cifs/connect.c in
> http://git.samba.org/?p=jlayton/linux.git;a=commit;h=b82a25501cb18b86fd247da15c886762fdc5404c
> 
> It looks like the following logic changes from setting rsize to what
> the server claims it can support (negotiated maxBuf) to what our
> maximum buffer size is:
> 
> @@ -3130,8 +3130,7 @@ try_mount_again:
>                 cFYI(DBG2, "no very large read support, rsize now 127K");
>         }
>         if (!(tcon->ses->capabilities & CAP_LARGE_READ_X))
> -               cifs_sb->rsize = min(cifs_sb->rsize,
> -                              (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE));
> +               cifs_sb->rsize = min(cifs_sb->rsize, CIFSMaxBufSize);
> 
> 
> Is that what we want?
> 

I think so, yes. That's part of untangling the mess.

According to the protocol docs, the server should only be bound by the
client's MaxBufSize for reads. Therefore, the maxBuf advertised by the
server should have no bearing on the rsize.

-- 
Jeff Layton <jlayton@xxxxxxxxxx>
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