linux-kernel - Re: [PATCH] cifs: Fix cifs_limit_bvec_subset() to correctly check the maxmimum size

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Message-ID: <2818727.1684779061@warthog.procyon.org.uk>
Date:   Mon, 22 May 2023 19:11:01 +0100
From:   David Howells <dhowells@...hat.com>
To:     Shyam Prasad N <nspmangalore@...il.com>
Cc:     dhowells@...hat.com, Shyam Prasad N <sprasad@...rosoft.com>,
        Steve French <smfrench@...il.com>,
        Rohith Surabattula <rohiths.msft@...il.com>,
        Paulo Alcantara <pc@...guebit.com>,
        Tom Talpey <tom@...pey.com>, Jeff Layton <jlayton@...nel.org>,
        linux-cifs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cifs: Fix cifs_limit_bvec_subset() to correctly check the maxmimum size

Shyam Prasad N <nspmangalore@...il.com> wrote:

> > +               max_size -= len;
> 
> Shouldn't this decrement happen below, after the span has been
> compared with max_size?

It probably doesn't matter.  The compiler is free to move it around, but yes
that and ix++ can both be moved down.

David