linux-kernel - Re: [PATCH 5/6] fsmount: do not use legacy MS

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Message-ID: <8221.1537631312@warthog.procyon.org.uk>
Date:   Sat, 22 Sep 2018 16:48:32 +0100
From:   David Howells <dhowells@...hat.com>
To:     Christian Brauner <christian@...uner.io>
Cc:     dhowells@...hat.com, Miklos Szeredi <mszeredi@...hat.com>,
        Al Viro <viro@...IV.linux.org.uk>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/6] fsmount: do not use legacy MS_ flags

Christian Brauner <christian@...uner.io> wrote:

> mount_setattr(int dfd, const char *path, unsigned int atflags,
>               unsigned int attr_cmd,
> 	      unsigned int attr_values,
> 	      unsigned int attr_mask);

Whilst you can have up to six arguments on a syscall, I seem to remember that
6-arg syscalls require special handlers on some systems due to register count.

David